Sumera Ahmed, MD
NPI 1134180219ActiveIndividual· Internal Medicine· Fairfield, CA
Internal Medicine (MD) with Northbay Physicians Surgery Center, LLC, practicing in Fairfield, California. Their prescriptions cost Medicare Part D more than their services did: $653,329 for 1,520 claims, against $1,952 paid for services in 2024. Insulet Corporation was the largest of 7 companies reporting payments in 2025, $418.56 in all, mostly food and beverage. Lists Northbay Medical Center as a hospital affiliation.
Overview
| NPI | 1134180219 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 29, 2006 |
| Last updated in NPPES | Mar 13, 2024 |
| Certified by provider | Mar 11, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A95162 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 17 |
|---|---|
| Services billed | 18 across 5 procedure codes |
| Paid by Medicare | $1,952 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,520 · 3,053 30-day fills |
|---|---|
| Patients | 114 |
| Total drug cost | $653,329 |
| Generic share | 37% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
Medical group
- Northbay Physicians Surgery Center, LLCFairfield, CA · 324 clinicians
Hospital affiliation
- Northbay Medical CenterFairfield, CA
Industry payments (Open Payments)
- 2025$418.56 · 9 payments from 7 companies
- 2024$395.24 · 14 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Insulet Corporation | $146.60 | 1 |
| Corcept Therapeutics | $144.03 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $42.17 | 2 |
| Xeris Pharmaceuticals, Inc. | $30.14 | 2 |
| Abbott Laboratories | $21.53 | 1 |
What the 2025 payments were for
- Food and Beverage$418.56 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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