Allison Chelsa Billi, M.D./PH.D.
NPI 1639559453ActiveIndividual· Dermatology· Ann Arbor, MI
Dermatology (M.D./PH.D.) in Ann Arbor, Michigan, trained at University of Michigan Medical School (class of 2015). Medicare paid $12,270 for services to 118 patients in 2024. Pfizer Inc. reported $30.84 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1639559453 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D./PH.D. |
| Sole proprietor | No |
| NPI issued | Jun 6, 2015 |
| Last updated in NPPES | Jul 2, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 4301117585 | MI |
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 - Dermatology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 118 |
|---|---|
| Services billed | 426 across 22 procedure codes |
| Paid by Medicare | $12,270 |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Dermatology |
Medical group
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
Hospital affiliation
- University of Michigan Health SystemAnn Arbor, MI
Industry payments (Open Payments)
- 2025$30.84 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $30.84 | 1 |
What the 2025 payments were for
- Food and Beverage$30.84 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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