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- CA
- Merced
- Dr. Alfred Johnson, MD
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Dr. Alfred Johnson, MD
Overview of Dr. Alfred Johnson, MD
Dr. Alfred Johnson, MD is a Gastroenterological Surgery Specialist in Merced, CA. They specialize in Gastroenterological Surgery, has 37 years of experience, and is board certified in General Surgery. They graduated from Georgetown University School of Medicine and is affiliated with Mercy Medical Center Merced. Dr. Johnson, completed a residency at St Joseph's Hospital. Patients rated Dr. Johnson an average 2.8 star rating.
Dr. Johnson works at
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Dr. Johnson's Office Locations
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1
Tenaya Medical Group240 E 13th St Ste C, Merced, CA 95341 Directions (209) 723-2799
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2
Carlson Hansen Kwon-hong Mds1213 Coffee Rd Ste A, Modesto, CA 95355 Directions (209) 262-3064
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3
Office315 Mercy Ave Ste 400, Merced, CA 95340 Directions (209) 564-3700Monday07:30 - 17:00Tuesday07:30 - 17:00Wednesday07:30 - 17:00Thursday07:30 - 17:00Friday07:30 - 17:00SaturdayClosedSundayClosed
Hospital Affiliations
Admitting Hospitals
Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.
Admitting Hospitals
Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.
Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.
- Mercy Medical Center Merced
Experience & Treatment Frequency
NEW FEATURE
What is treatment frequency?
Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:
Very HighFrequency HighFrequency NormalFrequency May Perform Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.
NEW FEATURE
What is treatment frequency?
Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:
Very HighFrequency
HighFrequency
NormalFrequency
May Perform
Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.
Search for conditions or procedures.
Condition or procedure
Treatment Frequency
Ileus
Umbilical Hernia Repair Open
Intestinal Obstruction
Abdominal Disorders
Abdominal Pain
Anorectal Fistula
Appendicitis
Ascites
Barrett's Esophagus
Benign Neoplasm of the Digestive System
Benign Tumor
Bile Duct Obstruction
Biliary Atresia
Boerhaave's Syndrome
Breast Cancer
Breast Diseases
Breast Lump
Cancer
Cholangiocarcinoma
Cholecystitis and Gallstones
Cholelithiasis
Colorectal Cancer
Colorectal Polyp
Congenital Anomaly Intestine
Crohn's Disease
Diaphragmatic and Hiatal Hernia
Duodenal Ulcer
Empyema
Esophageal Diseases
Gallstones
Gastric Ulcer
Gastroesophageal Reflux Disease (GERD)
Gastrointestinal Bleeding
Gastrointestinal Diseases
Gastroparesis
Hernia
Hiatal Hernia
Hiatal Hernia with Obstruction
Hidradenitis
Incisional Hernia
Inflammatory Bowel Disease
Inguinal Hernia
Intestinal Abscess
Intestinal Diverticulosis
Ischemic Colitis
Lipomas
Liver Cancer
Meckel's Diverticulum
Neoplasm of Gastrointestinal Tract
Obstructed Inguinal Hernia
Osteosarcoma
Parathyroid (Gland) Disease
Pelvic Abscess
Peptic Ulcer
Peripheral Arterial Aneurysm
Peripheral Arterial Aneurysm and Dissection
Rib Fracture
Ruptured Aortic Aneurysm
Secondary Malignancies
Small Intestine Cancer
Soft Tissue Sarcoma
Splenomegaly
Stomach and Small Intestine Cancer
Stomach Cancer
Stomach Diseases
Traumatic Brain Injury
Ulcer
Ulcerative Colitis
Umbilical Hernia
Vascular Insufficiency of Intestines
Ventral Hernia
Abdominoplasty
Abscess or Cyst Drainage or Aspiration
Acid Reflux Surgery
Adrenalectomy
Axillary Lymph Node Dissection
Bile Duct Procedure
Biopsy of Breast
Bladder Surgery
Breast Surgical Procedure
Cholecystectomy with Robotic Assist
Colectomy
Colectomy Sigmoidectomy with Robotic Assist
Colon and Rectal Surgery
Colostomy
Cyst Incision and Drainage
Dressing and-or Debridement of Wound, Infection, or Burn
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
Enterostomy (Laparoscopic or Open)
Esophageal Surgery
Esophagomyotomy
Excision of Breast Tumor
Excision of Esophageal Lesion
Excision of Rectal Tumor
Excision of Skin Lesion
Excision of Stomach Tumor
Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
Gallbladder Removal
Gastrectomy
Gastrectomy with Robotic Assist
Gastric Restrictive With Partial Gastrectomy or Jejunojejunostomy
Gastroenterology Procedures
Gastrotomy
Hernia Repair
Laparoscopic Anti-Reflux Surgery
Laparoscopic Appendectomy
Laparoscopic Cholecystectomy Robotic Assist
Laparoscopic Colon Surgery
Laparoscopic Excision or Destruction of Ovary
Laparoscopic Gallbladder Removal (Cholecystectomy)
Laparoscopic Incisional Hernia Repair
Laparoscopic Inguinal Hernia Repair
Laparoscopic Removal of Stones from Biliary Tract
Laparoscopic Surgery for Achalasia
Laparoscopic Surgical Procedure
Laparoscopic Umbilical or Ventral Hernia Repair
Laparotomy
Lumpectomy
Lymph Node Biopsy or Excision
Mastectomy
Open Gastric Restrictive Procedure
Open Incisional or Ventral Hernia Repair
Orchiectomy
Paraesophageal Hernia Repair Robotic Assist
Paraesophageal Hernia Repair, Laparoscopic
Port Placements or Replacements
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Revision of Gastric Anastomosis or Restrictive Procedure
Robotic Heller Myotomy for the Treatment of Achalasia
Soft Tissue Tumor Removal
Sphincterotomy
Splenectomy
Splenectomy with Robotic Assist
Stomach Surgery
Thoracentesis
Vagotomy
Ventral Hernia Repair Laparoscopic
Ventral Hernia Repair Open
Wound Repair
Ileus
Umbilical Hernia Repair Open
Intestinal Obstruction
Ileus
Umbilical Hernia Repair Open
Intestinal Obstruction
Treatment frequency
Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Ileus
- View other providers who treat Ileus
Umbilical Hernia Repair Open
- View other providers who treat Umbilical Hernia Repair Open
Intestinal Obstruction
- View other providers who treat Intestinal Obstruction
Abdominal Pain
- View other providers who treat Abdominal Pain
Barrett's Esophagus
- View other providers who treat Barrett's Esophagus
Cholecystitis and Gallstones
- View other providers who treat Cholecystitis and Gallstones
Diaphragmatic and Hiatal Hernia
- View other providers who treat Diaphragmatic and Hiatal Hernia
Gallstones
- View other providers who treat Gallstones
Gastrointestinal Bleeding
- View other providers who treat Gastrointestinal Bleeding
Gastroparesis
- View other providers who treat Gastroparesis
Inguinal Hernia
- View other providers who treat Inguinal Hernia
Umbilical Hernia
- View other providers who treat Umbilical Hernia
Cholecystectomy with Robotic Assist
- View other providers who treat Cholecystectomy with Robotic Assist
Colectomy
- View other providers who treat Colectomy
Duodenal Polypectomy
- View other providers who treat Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
- View other providers who treat Endoscopy (Esophagus, Stomach, Small Intestine)
Gallbladder Removal
- View other providers who treat Gallbladder Removal
Laparoscopic Appendectomy
- View other providers who treat Laparoscopic Appendectomy
Laparoscopic Gallbladder Removal (Cholecystectomy)
- View other providers who treat Laparoscopic Gallbladder Removal (Cholecystectomy)
Paraesophageal Hernia Repair Robotic Assist
- View other providers who treat Paraesophageal Hernia Repair Robotic Assist
Paraesophageal Hernia Repair, Laparoscopic
- View other providers who treat Paraesophageal Hernia Repair, Laparoscopic
Abdominal Disorders
- View other providers who treat Abdominal Disorders
Anorectal Fistula
- View other providers who treat Anorectal Fistula
Appendicitis
- View other providers who treat Appendicitis
Ascites
- View other providers who treat Ascites
Benign Neoplasm of the Digestive System
- View other providers who treat Benign Neoplasm of the Digestive System
Benign Tumor
- View other providers who treat Benign Tumor
Bile Duct Obstruction
- View other providers who treat Bile Duct Obstruction
Biliary Atresia
- View other providers who treat Biliary Atresia
Boerhaave's Syndrome
- View other providers who treat Boerhaave's Syndrome
Breast Cancer
- View other providers who treat Breast Cancer
Breast Diseases
- View other providers who treat Breast Diseases
Breast Lump
- View other providers who treat Breast Lump
Cancer
- View other providers who treat Cancer
Cholangiocarcinoma
- View other providers who treat Cholangiocarcinoma
Cholelithiasis
- View other providers who treat Cholelithiasis
Colorectal Cancer
- View other providers who treat Colorectal Cancer
Colorectal Polyp
- View other providers who treat Colorectal Polyp
Congenital Anomaly Intestine
- View other providers who treat Congenital Anomaly Intestine
Crohn's Disease
- View other providers who treat Crohn's Disease
Duodenal Ulcer
- View other providers who treat Duodenal Ulcer
Empyema
- View other providers who treat Empyema
Esophageal Diseases
- View other providers who treat Esophageal Diseases
Gastric Ulcer
- View other providers who treat Gastric Ulcer
Gastroesophageal Reflux Disease (GERD)
- View other providers who treat Gastroesophageal Reflux Disease (GERD)
Gastrointestinal Diseases
- View other providers who treat Gastrointestinal Diseases
Hernia
- View other providers who treat Hernia
Hiatal Hernia
- View other providers who treat Hiatal Hernia
Hiatal Hernia with Obstruction
- View other providers who treat Hiatal Hernia with Obstruction
Hidradenitis
- View other providers who treat Hidradenitis
Incisional Hernia
- View other providers who treat Incisional Hernia
Inflammatory Bowel Disease
- View other providers who treat Inflammatory Bowel Disease
Intestinal Abscess
- View other providers who treat Intestinal Abscess
Intestinal Diverticulosis
- View other providers who treat Intestinal Diverticulosis
Ischemic Colitis
- View other providers who treat Ischemic Colitis
Lipomas
- View other providers who treat Lipomas
Liver Cancer
- View other providers who treat Liver Cancer
Meckel's Diverticulum
- View other providers who treat Meckel's Diverticulum
Neoplasm of Gastrointestinal Tract
- View other providers who treat Neoplasm of Gastrointestinal Tract
Obstructed Inguinal Hernia
- View other providers who treat Obstructed Inguinal Hernia
Osteosarcoma
- View other providers who treat Osteosarcoma
Parathyroid (Gland) Disease
- View other providers who treat Parathyroid (Gland) Disease
Pelvic Abscess
- View other providers who treat Pelvic Abscess
Peptic Ulcer
- View other providers who treat Peptic Ulcer
Peripheral Arterial Aneurysm
- View other providers who treat Peripheral Arterial Aneurysm
Peripheral Arterial Aneurysm and Dissection
- View other providers who treat Peripheral Arterial Aneurysm and Dissection
Rib Fracture
- View other providers who treat Rib Fracture
Ruptured Aortic Aneurysm
- View other providers who treat Ruptured Aortic Aneurysm
Secondary Malignancies
- View other providers who treat Secondary Malignancies
Small Intestine Cancer
- View other providers who treat Small Intestine Cancer
Soft Tissue Sarcoma
- View other providers who treat Soft Tissue Sarcoma
Splenomegaly
- View other providers who treat Splenomegaly
Stomach and Small Intestine Cancer
- View other providers who treat Stomach and Small Intestine Cancer
Stomach Cancer
- View other providers who treat Stomach Cancer
Stomach Diseases
- View other providers who treat Stomach Diseases
Traumatic Brain Injury
- View other providers who treat Traumatic Brain Injury
Ulcer
- View other providers who treat Ulcer
Ulcerative Colitis
- View other providers who treat Ulcerative Colitis
Vascular Insufficiency of Intestines
- View other providers who treat Vascular Insufficiency of Intestines
Ventral Hernia
- View other providers who treat Ventral Hernia
Abdominoplasty
- View other providers who treat Abdominoplasty
Abscess or Cyst Drainage or Aspiration
- View other providers who treat Abscess or Cyst Drainage or Aspiration
Acid Reflux Surgery
- View other providers who treat Acid Reflux Surgery
Adrenalectomy
- View other providers who treat Adrenalectomy
Axillary Lymph Node Dissection
- View other providers who treat Axillary Lymph Node Dissection
Bile Duct Procedure
- View other providers who treat Bile Duct Procedure
Biopsy of Breast
- View other providers who treat Biopsy of Breast
Bladder Surgery
- View other providers who treat Bladder Surgery
Breast Surgical Procedure
- View other providers who treat Breast Surgical Procedure
Colectomy Sigmoidectomy with Robotic Assist
- View other providers who treat Colectomy Sigmoidectomy with Robotic Assist
Colon and Rectal Surgery
- View other providers who treat Colon and Rectal Surgery
Colostomy
- View other providers who treat Colostomy
Cyst Incision and Drainage
- View other providers who treat Cyst Incision and Drainage
Dressing and-or Debridement of Wound, Infection, or Burn
- View other providers who treat Dressing and-or Debridement of Wound, Infection, or Burn
Enterostomy (Laparoscopic or Open)
- View other providers who treat Enterostomy (Laparoscopic or Open)
Esophageal Surgery
- View other providers who treat Esophageal Surgery
Esophagomyotomy
- View other providers who treat Esophagomyotomy
Excision of Breast Tumor
- View other providers who treat Excision of Breast Tumor
Excision of Esophageal Lesion
- View other providers who treat Excision of Esophageal Lesion
Excision of Rectal Tumor
- View other providers who treat Excision of Rectal Tumor
Excision of Skin Lesion
- View other providers who treat Excision of Skin Lesion
Excision of Stomach Tumor
- View other providers who treat Excision of Stomach Tumor
Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
- View other providers who treat Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
Gastrectomy
- View other providers who treat Gastrectomy
Gastrectomy with Robotic Assist
- View other providers who treat Gastrectomy with Robotic Assist
Gastric Restrictive With Partial Gastrectomy or Jejunojejunostomy
- View other providers who treat Gastric Restrictive With Partial Gastrectomy or Jejunojejunostomy
Gastroenterology Procedures
- View other providers who treat Gastroenterology Procedures
Gastrotomy
- View other providers who treat Gastrotomy
Hernia Repair
- View other providers who treat Hernia Repair
Laparoscopic Anti-Reflux Surgery
- View other providers who treat Laparoscopic Anti-Reflux Surgery
Laparoscopic Cholecystectomy Robotic Assist
- View other providers who treat Laparoscopic Cholecystectomy Robotic Assist
Laparoscopic Colon Surgery
- View other providers who treat Laparoscopic Colon Surgery
Laparoscopic Excision or Destruction of Ovary
- View other providers who treat Laparoscopic Excision or Destruction of Ovary
Laparoscopic Incisional Hernia Repair
- View other providers who treat Laparoscopic Incisional Hernia Repair
Laparoscopic Inguinal Hernia Repair
- View other providers who treat Laparoscopic Inguinal Hernia Repair
Laparoscopic Removal of Stones from Biliary Tract
- View other providers who treat Laparoscopic Removal of Stones from Biliary Tract
Laparoscopic Surgery for Achalasia
- View other providers who treat Laparoscopic Surgery for Achalasia
Laparoscopic Surgical Procedure
- View other providers who treat Laparoscopic Surgical Procedure
Laparoscopic Umbilical or Ventral Hernia Repair
- View other providers who treat Laparoscopic Umbilical or Ventral Hernia Repair
Laparotomy
- View other providers who treat Laparotomy
Lumpectomy
- View other providers who treat Lumpectomy
Lymph Node Biopsy or Excision
- View other providers who treat Lymph Node Biopsy or Excision
Mastectomy
- View other providers who treat Mastectomy
Open Gastric Restrictive Procedure
- View other providers who treat Open Gastric Restrictive Procedure
Open Incisional or Ventral Hernia Repair
- View other providers who treat Open Incisional or Ventral Hernia Repair
Orchiectomy
- View other providers who treat Orchiectomy
Port Placements or Replacements
- View other providers who treat Port Placements or Replacements
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Revision of Gastric Anastomosis or Restrictive Procedure
- View other providers who treat Revision of Gastric Anastomosis or Restrictive Procedure
Robotic Heller Myotomy for the Treatment of Achalasia
- View other providers who treat Robotic Heller Myotomy for the Treatment of Achalasia
Soft Tissue Tumor Removal
- View other providers who treat Soft Tissue Tumor Removal
Sphincterotomy
- View other providers who treat Sphincterotomy
Splenectomy
- View other providers who treat Splenectomy
Splenectomy with Robotic Assist
- View other providers who treat Splenectomy with Robotic Assist
Stomach Surgery
- View other providers who treat Stomach Surgery
Thoracentesis
- View other providers who treat Thoracentesis
Vagotomy
- View other providers who treat Vagotomy
Ventral Hernia Repair Laparoscopic
- View other providers who treat Ventral Hernia Repair Laparoscopic
Ventral Hernia Repair Open
- View other providers who treat Ventral Hernia Repair Open
Wound Repair
- View other providers who treat Wound Repair
Check your insurance
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View All Accepted Carriers
- Anthem Blue Cross Blue Shield
- Buckeye Community Health Plan
- First Health
- United Healthcare
* Please verify this information when scheduling an appointment.
Ratings & Reviews
Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.
Learn more about how FindCare's ratings and reviews work
Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.
Learn more about how FindCare's ratings and reviews work
Learn more about how FindCare's ratings and reviews work
2.8
Average provider rating
Based on 9 ratings
Patient Ratings (9)
5 Star
(4)
4 Star
(0)
3 Star
(0)
2 Star
(0)
1 Star
(5)
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About Dr. Alfred Johnson, MD
Specialties*
- Gastroenterological Surgery
-
*Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Specialties*
Years of Experience
- 37 years of experience
Years of Experience
Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.
Languages Spoken
- English
Languages Spoken
NPI Number
- 1174508865
NPI Number
A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.
Education & Certifications
Fellowship
- Emory University School of Medicine
Fellowship
Residency
- St Joseph's Hospital
Residency
Internship
- Howard University Hospital
Internship
Medical Education
- Georgetown University School of Medicine
Medical Education
Board Certifications
- General Surgery
Board Certifications
What’s a board certification and why is it important that my provider has one?
A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.
A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.
Frequently Asked Questions
Dr. Johnson accepts Anthem Blue Cross Blue Shield, and other major insurance plans. Please call ahead to confirm all accepted insurance plans.
Dr. Johnson has indicated that they do offer telehealth services. Please call the provider’s office at for more information.
Dr. Johnson works at
Dr. Johnson has seen patients for Ileus, and more. You can see other conditions treated by Dr. Johnson on their profile. Please call the provider’s office to confirm all visit reasons.
9 patients have reviewed Dr. Johnson. The overall rating for this provider is 2.8. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Johnson.
Whether a person prefers to schedule an appointment online or over the phone with Dr. Johnson, there are benefits to both methods. A person calling to schedule an with Dr. Johnson appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.
