Ammar Qoubaitary, M.D.
NPI 1851346977ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· San Ramon, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with John Muir Physician Network, practicing in San Ramon, California. Their prescriptions cost Medicare Part D more than their services did: $2,558,894 for 4,699 claims, against $397,575 paid for services in 2024. Novo Nordisk Inc was the largest of 29 companies reporting payments in 2025, $93,147 in all, mostly speaking and faculty fees. Lists John Muir Medical Center - Concord Campus and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1851346977 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 24, 2006 |
| Last updated in NPPES | Jul 12, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A83625 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 729 |
|---|---|
| Services billed | 25,389 across 27 procedure codes |
| Paid by Medicare | $397,575 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,699 · 11,619 30-day fills |
|---|---|
| Patients | 577 |
| Total drug cost | $2,558,894 |
| Generic share | 47% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$93,147 · 206 payments from 29 companies
- 2024$45,835 · 201 payments from 32 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $67,769 | 77 |
| Dexcom, Inc. | $14,538 | 28 |
| Lilly USA, LLC | $5,352 | 13 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $3,293 | 9 |
| Amgen Inc. | $566.24 | 25 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$69,890 · 25 payments
- Compensation for serving as faculty or as a speaker for a medical education program$12,750 · 6 payments
- Food and Beverage$5,689 · 146 payments
- Travel and Lodging$4,809 · 28 payments
- Education$10.02 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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