Ming Fang, MD
NPI 1366520199ActiveIndividual· Internal Medicine, Gastroenterology· Walnut Creek, CA
Internal Medicine, Gastroenterology (MD) in Walnut Creek, California, licensed in CA, with an NPI issued in November 2006. In 2024 Medicare paid $162,795 for 463 patients, and Part D covered 416 of their prescriptions, 75% of them generic. Janssen Biotech, Inc. was the largest of 10 companies reporting payments in 2025, $823.48 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1366520199 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 1, 2006 |
| Last updated in NPPES | Jan 4, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A83531 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 463 |
|---|---|
| Services billed | 1,573 across 27 procedure codes |
| Paid by Medicare | $162,795 |
Part D prescriptions in 2024
| Prescriptions (claims) | 416 · 705 30-day fills |
|---|---|
| Patients | 213 |
| Total drug cost | $80,411 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$823.48 · 36 payments from 10 companies
- 2024$212.26 · 11 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $291.26 | 6 |
| Abbvie Inc. | $159.46 | 15 |
| Madrigal Pharmaceuticals | $129.05 | 4 |
| Braintree Laboratories, Inc. | $62.82 | 2 |
| Gilead Sciences, Inc. | $44.17 | 2 |
What the 2025 payments were for
- Food and Beverage$739.48 · 35 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 41 gastroenterologists in Walnut Creek · All gastroenterologists in California