Brooke Harmssen, D.O.
NPI 1083110456ActiveIndividual· Internal Medicine· Glendale, CA
Internal Medicine (D.O.) in Glendale, California, trained at Touro Un College of Osteopathic Medicine, Vallejo (class of 2018). Mostly services rather than prescriptions: Medicare paid $52,873 for 358 patients in 2024, with only 29 Part D claims. Abbvie Inc. reported $27.89 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1083110456 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Apr 3, 2018 |
| Last updated in NPPES | Nov 21, 2022 |
| Certified by provider | Nov 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 20A17897 | CA |
| Family Medicine | 207Q00000X | A17897 | 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 | 358 |
|---|---|
| Services billed | 393 across 24 procedure codes |
| Paid by Medicare | $52,873 |
Part D prescriptions in 2024
| Prescriptions (claims) | 29 · 30 30-day fills |
|---|---|
| Patients | 16 |
| Total drug cost | $310.26 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Touro Un College of Osteopathic Medicine, Vallejo |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Family Practice |
Medical groups
- Galen Inpatient Physicians PCHanford, CA · 1,077 clinicians
- Glendale Adventist Emergency Physicians IncorporatedGlendale, CA · 26 clinicians
Hospital affiliations
- Adventist Health Simi ValleySimi Valley, CA
- Glendale Adventist Medical CenterGlendale, CA
- Kaiser Foundation Hospital - Los AngelesLos Angeles, CA
- Providence Saint Joseph Medical CtrBurbank, CA
- Usc Verdugo Hills HospitalGlendale, CA
Industry payments (Open Payments)
- 2025$27.89 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $27.89 | 2 |
What the 2025 payments were for
- Food and Beverage$27.89 · 2 payments
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