Allen Y. Tham, MD
NPI 1578715801ActiveIndividual· Orthopaedic Surgery, Hand Surgery· Fullerton, CA
Orthopaedic Surgery, Hand Surgery (MD) with Providence Medical Foundation, practicing in Fullerton, California. Mostly services rather than prescriptions: Medicare paid $159,588 for 434 patients in 2024, with only 27 Part D claims. Axogen was the largest of 3 companies reporting payments in 2025, $343.81 in all, mostly food and beverage. Lists Providence St. Jude Medical Center as a hospital affiliation.
Overview
| NPI | 1578715801 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 17, 2008 |
| Last updated in NPPES | Apr 30, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery, Hand Surgery Primary | 207XS0106X | A110804 | CA |
| Orthopaedic Surgery | 207X00000X | MT185928 | PA |
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 - Hand Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 434 |
|---|---|
| Services billed | 1,730 across 76 procedure codes |
| Paid by Medicare | $159,588 |
Part D prescriptions in 2024
| Prescriptions (claims) | 27 · 29 30-day fills |
|---|---|
| Patients | 23 |
| Total drug cost | $6,350 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Hand Surgery |
| Secondary specialties | Orthopedic Surgery |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence St. Jude Medical CenterFullerton, CA
Industry payments (Open Payments)
- 2025$343.81 · 5 payments from 3 companies
- 2024$153.79 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axogen | $130.76 | 1 |
| Stryker Corporation | $125.62 | 3 |
| Acumed LLC | $87.43 | 1 |
What the 2025 payments were for
- Food and Beverage$343.81 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Orthopaedic Surgery, Hand Surgery providers in Fullerton
- 1538169578
- 1780620013
- 1235114950
All Orthopaedic Surgery, Hand Surgery providers in California