Orrin M. Troum, MD
NPI 1821032608ActiveIndividual· Internal Medicine, Rheumatology· Santa Monica, CA
Internal Medicine, Rheumatology (MD) with Providence Saint Johns Medical Foundation, practicing in Santa Monica, California. Their prescriptions cost Medicare Part D more than their services did: $5,670,804 for 3,195 claims, against $309,322 paid for services in 2024. Abbvie Inc. was the largest of 32 companies reporting payments in 2025, $322,150 in all, mostly speaking and faculty fees. Lists Cedars-Sinai Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1821032608 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 15, 2006 |
| Last updated in NPPES | Apr 20, 2021 |
| Certified by provider | Apr 20, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | A37014 | CA |
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 - Rheumatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 899 |
|---|---|
| Services billed | 10,685 across 39 procedure codes |
| Paid by Medicare | $309,322 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,195 · 5,074 30-day fills |
|---|---|
| Patients | 435 |
| Total drug cost | $5,670,804 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Rheumatology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Providence Saint Johns Medical FoundationSanta Monica, CA · 281 clinicians
Hospital affiliations
- Cedars-Sinai Medical CenterLos Angeles, CA
- Saint John's Health CenterSanta Monica, CA
- Santa Monica - UCLA Med Ctr & Orthopaedic HospitalSanta Monica, CA
Other facilities
- Dedicated Home Health Care, Inc.Home health agency · Encino, CA
Industry payments (Open Payments)
- 2025$322,150 · 535 payments from 32 companies
- 2024$264,806 · 453 payments from 33 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $71,673 | 79 |
| Amgen Inc. | $65,452 | 77 |
| Ucb, Inc. | $52,822 | 63 |
| Lilly USA, LLC | $52,064 | 55 |
| Genzyme Corporation | $38,050 | 25 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$216,158 · 72 payments
- Consulting Fee$49,323 · 18 payments
- Travel and Lodging$43,120 · 129 payments
- Food and Beverage$11,495 · 312 payments
- Honoraria$2,055 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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