Mark Nelson Monroe, M.D.
NPI 1740244532ActiveIndividual· Family Medicine· Santa Ana, CA
Family Medicine (M.D.) in Santa Ana, California, licensed in CA, with an NPI issued in April 2006. Their prescriptions cost Medicare Part D more than their services did: $569,726 for 5,840 claims, against $173,289 paid for services in 2024. Aimmune Therapeutics, Inc. was the largest of 17 companies reporting payments in 2025, $2,489 in all, mostly food and beverage. Lists Hoag Memorial Hospital Presbyterian and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1740244532 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 17, 2006 |
| Last updated in NPPES | Nov 3, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A39997 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 200 |
|---|---|
| Services billed | 3,231 across 80 procedure codes |
| Paid by Medicare | $173,289 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,840 · 11,310 30-day fills |
|---|---|
| Patients | 227 |
| Total drug cost | $569,726 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1980 |
|---|---|
| Medicare specialty | Family Practice |
| Secondary specialties | General Practice |
Hospital affiliations
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Livingstone Home Health Services, IncHome health agency · Buena Park, CA
- Fountain Valley Post AcuteNursing home · Fountain Valley, CA
Industry payments (Open Payments)
- 2025$2,489 · 66 payments from 17 companies
- 2024$1,817 · 59 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aimmune Therapeutics, Inc. | $472.47 | 19 |
| Astrazeneca Pharmaceuticals LP | $431.79 | 13 |
| Amgen Inc. | $295.99 | 4 |
| Corcept Therapeutics | $261.46 | 5 |
| Cvrx, Inc. | $202.63 | 1 |
What the 2025 payments were for
- Food and Beverage$2,489 · 66 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 242 family medicine physicians in Santa Ana · All family medicine physicians in California