Mark E. Wylam, M.D.
NPI 1003880865ActiveIndividual· Internal Medicine, Critical Care Medicine· Orange, CA
Internal Medicine, Critical Care Medicine (M.D.) in Orange, California, trained at Georgetown University School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $641,365 for 454 claims, against $27,937 paid for services in 2024. Partner Therapeutics, Inc. reported $500.00 in payments in 2024, mostly consulting fees.
Overview
| NPI | 1003880865 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 16, 2006 |
| Last updated in NPPES | Oct 27, 2025 |
| Certified by provider | Oct 27, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | 197177 | CA |
| Internal Medicine | 207R00000X | 197177 | CA |
| General Practice | 208D00000X | 40622 | MN |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 197177 | CA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 40622 | MN |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 40622 | MN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (CA); Practitioner - Critical Care (Intensivists) (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 146 |
|---|---|
| Services billed | 386 across 25 procedure codes |
| Paid by Medicare | $27,937 |
Part D prescriptions in 2024
| Prescriptions (claims) | 454 · 920 30-day fills |
|---|---|
| Patients | 86 |
| Total drug cost | $641,365 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
| Telehealth | Offers telehealth |
Medical group
- Uc RegentsOrange, CA · 319 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2024$500.00 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Partner Therapeutics, Inc. | $500.00 | 1 |
What the 2024 payments were for
- Consulting Fee$500.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Critical Care Medicine providers in Orange
- 1457665564
- 1902313919
- 1336106871
- 1295078764
- 1508276197
- 1972778520
- 1497280317
- 1528346103
- 1518983899
- 1316047913
- 1306005046
- 1538166780
All Internal Medicine, Critical Care Medicine providers in California →