Jacklin S. Grammer, MD
NPI 1356426019ActiveIndividual· Internal Medicine· Fremont, CA
Internal Medicine (MD) in Fremont, California, trained at Northwestern University Feinberg Medical School (class of 1993). In 2024 Medicare paid $3,806 for 35 patients, and Part D covered 52 of their prescriptions, 54% of them generic.
Overview
| NPI | 1356426019 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2006 |
| Last updated in NPPES | May 28, 2020 |
| Certified by provider | May 28, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G84008 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 35 |
|---|---|
| Services billed | 37 across 5 procedure codes |
| Paid by Medicare | $3,806 |
Part D prescriptions in 2024
| Prescriptions (claims) | 52 · 76 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $3,165 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Fremont
- 1023639804
- 1033100516
- 1093740227
- 1114430055
- 1134201494
- 1144221953
- 1144311705
- 1144676404
- 1144782673
- 1154943801
- 1174085690
- 1194335315
All 147 internal medicine physicians in Fremont · All internal medicine physicians in California