Robert M. Tanaka, M.D.
NPI 1194764720ActiveIndividual· Internal Medicine, Pulmonary Disease· Modesto, CA
Internal Medicine, Pulmonary Disease (M.D.) in Modesto, California, trained at University of California, Geffen School of Medicine (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $3,519,902 for 5,470 claims, against $207,727 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 14 companies reporting payments in 2025, $1,634 in all, mostly food and beverage.
Overview
| NPI | 1194764720 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 6, 2006 |
| Last updated in NPPES | Feb 10, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | G35094 | CA |
| Internal Medicine | 207R00000X | G35094 | 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 - Pulmonary Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 960 |
|---|---|
| Services billed | 2,764 across 28 procedure codes |
| Paid by Medicare | $207,727 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,470 · 7,985 30-day fills |
|---|---|
| Patients | 740 |
| Total drug cost | $3,519,902 |
| Generic share | 55% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists), Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Valley Medical FoundationModesto, CA · 2,500 clinicians
Hospital affiliations
- Adventist Health SonoraSonora, CA
- Memorial Medical CenterModesto, CA
Industry payments (Open Payments)
- 2025$1,634 · 73 payments from 14 companies
- 2024$879.17 · 37 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $410.07 | 18 |
| Glaxosmithkline, LLC. | $250.68 | 23 |
| Bayer Healthcare Pharmaceuticals Inc. | $200.00 | 1 |
| Genzyme Corporation | $134.82 | 7 |
| Verona Pharma, Inc. | $106.67 | 5 |
What the 2025 payments were for
- Food and Beverage$1,417 · 71 payments
- Consulting Fee$200.00 · 1 payment
- Education$17.38 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 16 pulmonologists in Modesto · All pulmonologists in California