Mark P. Clark, MD
NPI 1891874665ActiveIndividual· Internal Medicine· Glendale, CA
Internal Medicine (MD) in Glendale, California, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1982). Enrolled in Medicare as practitioner - internal medicine.
Overview
| NPI | 1891874665 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 3, 2006 |
| Last updated in NPPES | Nov 18, 2025 |
| Certified by provider | Nov 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G50527 | CA |
| Hospitalist | 208M00000X | G50527 | 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) |
|---|
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | General Surgery |
Medical groups
- City and County of San FranciscoSan Francisco, CA · 365 clinicians
- One Medical Group IncSan Jose, CA · 331 clinicians
Hospital affiliation
- Laguna Honda Hospital & Rehabilitation CenterSan Francisco, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 169 internal medicine physicians in Glendale · All internal medicine physicians in California