Dr. John Gahagan
- Gender: Male
- Experience: 9 years
- Graduation year: 2012
- Sole propriator: No
- NPI: 1558629493
Dr. John Gahagan M.D.
Colorectal Surgeon
He is located at 5725 West Las Positas Boulevard Suite 100 in Pleasanton, CA 94588. Can help patients with the following: Boils, Cyst, Gallstones, Heart Disease, Pilonidal Cyst, Ulcerative Colitis. His National Provider Identifier (NPI) number is 1558629493. Appointment can be made via the phone number (925) 734-8130. He is affiliated with 1 practices and 2 hospitals.
Conditions treated
Dr. John Gahagan, being an colorectal surgeon, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. John Gahagan.
- Achalasia
- Anal Fissure
- Appendicitis
- Boils
- Cancer
- Colon Cancer
- Crohn's Disease
- Cyst
- Diverticulosis
- Enlarged Spleen
- Esophageal Cancer
- Gallstones
- Gangrene
- Heart Disease
- Hemorrhoids
- Hernia
- Inflammatory Bowel Disease (IBD)
- Lymphedema
- Pancreatitis
- Peptic Ulcer
- Pilonidal Cyst
- Sebaceous Cyst
- Ulcerative Colitis
Medicare Enrollment
Dr. John Gahagan is enrolled to bill Medicare as a Practitioner - General Surgery .
Bills through: Stanford Health Care
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.
Payments received
Drug payment
| Intuitive Surgical | $322 |
| Cook Medical | $192 |
Other
| Travel and Lodging | $323 |
| Food and Beverage | $193 |
Studies
Graduated in 2012Additional Specialities
- Resident
- Surgeon
Questions & Answers
Does Dr. John Gahagan have affiliation with practices?
Dr. John Gahagan is affiliated with Stanford Health Care.
Has Dr. John Gahagan affiliation with hospitals?
Dr. John Gahagan is affiliated with STANFORD HEALTH CARE. For the full list of hospitals see this list.
What conditions does Dr. John Gahagan treat?
Dr. John Gahagan provides treatment for Boils, Cyst, Gallstones, Heart Disease, Pilonidal Cyst, Ulcerative Colitis. For the full list see this list.
Does Dr. John Gahagan accept insurance?
Unfortunately we don't have any information if Dr. John Gahagan accepts insurance.
Where can you meet with Dr. John Gahagan?
Dr. John Gahagan's office is located at 5725 West Las Positas Boulevard Suite 100 in Pleasanton, CA 94588.