David N. Varon, M.D.
NPI 1184702656ActiveIndividual· Internal Medicine, Gastroenterology· Concord, CA
Internal Medicine, Gastroenterology (M.D.) in Concord, California, licensed in CA, with an NPI issued in November 2006. In 2024 Medicare paid $98,197 for 247 patients, and Part D covered 505 of their prescriptions, 74% of them generic. Aimmune Therapeutics, Inc. was the largest of 5 companies reporting payments in 2025, $442.50 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1184702656 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 1, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 00A259490 | 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 | 247 |
|---|---|
| Services billed | 796 across 15 procedure codes |
| Paid by Medicare | $98,197 |
Part D prescriptions in 2024
| Prescriptions (claims) | 505 · 722 30-day fills |
|---|---|
| Patients | 179 |
| Total drug cost | $109,129 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 1970 |
|---|---|
| Medicare specialty | Gastroenterology |
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$442.50 · 7 payments from 5 companies
- 2024$159.44 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aimmune Therapeutics, Inc. | $249.97 | 2 |
| Madrigal Pharmaceuticals | $110.69 | 1 |
| Abbvie Inc. | $34.19 | 2 |
| Takeda Pharmaceuticals U.S.A., Inc. | $26.48 | 1 |
| Novo Nordisk Inc | $21.17 | 1 |
What the 2025 payments were for
- Food and Beverage$442.50 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Concord
- 1811040967
- 1538115571
- 1356504476
- 1073533212
- 1609929751
- 1508061631
All Internal Medicine, Gastroenterology providers in California →