Michael J. Maguire, D.O.
NPI 1881633063ActiveIndividual· Family Medicine, Geriatric Medicine· Whittier, CA
Family Medicine, Geriatric Medicine (D.O.) in Whittier, California, trained at Des Moines University of Osteopathic Medicine and Health Sciences (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $1,466,708 for 13,331 claims, against $64,009 paid for services in 2024. Neurocrine Biosciences, Inc. was the largest of 15 companies reporting payments in 2025, $723.44 in all, mostly food and beverage.
Overview
| NPI | 1881633063 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jun 5, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine, Geriatric Medicine Primary | 207QG0300X | 20A4248 | CA |
| Family Medicine | 207Q00000X | 20A4248 | 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 | 233 |
|---|---|
| Services billed | 1,969 across 54 procedure codes |
| Paid by Medicare | $64,009 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,331 · 27,681 30-day fills |
|---|---|
| Patients | 716 |
| Total drug cost | $1,466,708 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Des Moines University of Osteopathic Medicine and Health Sciences |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Family Practice |
| Secondary specialties | Geriatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Maguire and Welsh Medical GroupWhittier, CA · 4 clinicians
Hospital affiliation
- Pih Health Hospital-WhittierWhittier, CA
Other facilities
- Presbyterian Intercommunity Hospital Home HealthHome health agency · La Mirada, CA
- Whittier Hills Health Care CtrNursing home · Whittier, CA
Industry payments (Open Payments)
- 2025$723.44 · 32 payments from 15 companies
- 2024$919.24 · 43 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Neurocrine Biosciences, Inc. | $136.00 | 5 |
| Glaxosmithkline, LLC. | $115.23 | 6 |
| Astrazeneca Pharmaceuticals LP | $85.50 | 4 |
| Pfizer Inc. | $78.09 | 3 |
| Novartis Pharmaceuticals Corporation | $77.00 | 3 |
What the 2025 payments were for
- Food and Beverage$723.44 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Family Medicine, Geriatric Medicine providers in Whittier
- 1346435476
- 1164467973
All Family Medicine, Geriatric Medicine providers in California