Chemanoor U. Zachariah, MD
NPI 1780655951ActiveIndividual· Internal Medicine· Tracy, CA
Internal Medicine (MD) in Tracy, California, licensed in CA, with an NPI issued in January 2006. Their prescriptions cost Medicare Part D more than their services did: $519,515 for 3,469 claims, against $83,580 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 8 companies reporting payments in 2025, $635.93 in all, mostly food and beverage. Lists Memorial Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1780655951 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jan 27, 2006 |
| Last updated in NPPES | Nov 16, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A30629 | 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 | 121 |
|---|---|
| Services billed | 915 across 17 procedure codes |
| Paid by Medicare | $83,580 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,469 · 7,274 30-day fills |
|---|---|
| Patients | 180 |
| Total drug cost | $519,515 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1969 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Memorial Medical CenterModesto, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
- Sutter Tracy Community HospitalTracy, CA
Other facilities
- Sutter Care at HomeHome health agency · Salida, CA
Industry payments (Open Payments)
- 2025$635.93 · 48 payments from 8 companies
- 2024$142.25 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $385.72 | 35 |
| Novartis Pharmaceuticals Corporation | $91.64 | 5 |
| Lilly USA, LLC | $53.88 | 2 |
| Pfizer Inc. | $35.06 | 2 |
| Abbott Laboratories | $19.98 | 1 |
What the 2025 payments were for
- Food and Beverage$615.95 · 47 payments
- Long term medical supply or device loan$19.98 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 34 internal medicine physicians in Tracy · All internal medicine physicians in California