Andrew Richard Williams, M.D.
NPI 1245641869ActiveIndividual· Internal Medicine· Pasadena, CA
Internal Medicine (M.D.) with Healthcare Partners Affiliates Medical Group, practicing in Pasadena, California. Their prescriptions cost Medicare Part D more than their services did: $12,487 for 262 claims, against $4,458 paid for services in 2024. Astrazeneca Uk Limited was the largest of 3 companies reporting payments in 2025, $23,629 in all, mostly consulting fees. Lists Huntington Hospital as a hospital affiliation.
Overview
| NPI | 1245641869 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 16, 2014 |
| Last updated in NPPES | Jan 15, 2026 |
| Certified by provider | Jan 15, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A135707 | 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 | 13 |
|---|---|
| Services billed | 43 across 4 procedure codes |
| Paid by Medicare | $4,458 |
Part D prescriptions in 2024
| Prescriptions (claims) | 262 · 272 30-day fills |
|---|---|
| Patients | 123 |
| Total drug cost | $12,487 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Healthcare Partners Affiliates Medical GroupAnaheim, CA · 754 clinicians
Hospital affiliation
- Huntington HospitalPasadena, CA
Industry payments (Open Payments)
- 2025$23,629 · 29 payments from 3 companies
- 2024$19,520 · 25 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Uk Limited | $23,517 | 23 |
| Pfizer Inc. | $61.24 | 3 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $50.96 | 3 |
What the 2025 payments were for
- Consulting Fee$23,517 · 23 payments
- Food and Beverage$112.20 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Pasadena
- 1033182530
- 1043262421
- 1053516963
- 1073608592
- 1194764589
- 1215011879
- 1215925409
- 1255303905
- 1306124060
- 1316359581
- 1316367949
- 1356421903
All 195 internal medicine physicians in Pasadena · All internal medicine physicians in California