Andrea H. An, MD
NPI 1609826510ActiveIndividual· Psychiatry & Neurology, Neurology· Chandler, AZ
Psychiatry & Neurology, Neurology (MD) in Chandler, Arizona, trained at New York Medical College (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $3,408,860 for 3,327 claims, against $316,884 paid for services in 2024. Argenx US, Inc. was the largest of 23 companies reporting payments in 2025, $3,745 in all, mostly food and beverage.
Overview
| NPI | 1609826510 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 11, 2006 |
| Last updated in NPPES | Jul 19, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 42372 | AZ |
| Psychiatry & Neurology, Neurology | 2084N0400X | M1470 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Neurology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 705 |
|---|---|
| Services billed | 5,430 across 58 procedure codes |
| Paid by Medicare | $316,884 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,327 · 6,979 30-day fills |
|---|---|
| Patients | 602 |
| Total drug cost | $3,408,860 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Neurology |
Medical group
- Neurology Associates of the East Valley PLCChandler, AZ · 12 clinicians
Hospital affiliation
- Chandler Regional Medical CenterChandler, AZ
Industry payments (Open Payments)
- 2025$3,745 · 171 payments from 23 companies
- 2024$3,214 · 147 payments from 26 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Argenx US, Inc. | $560.82 | 19 |
| Abbvie Inc. | $492.44 | 27 |
| Alexion Pharmaceuticals, Inc. | $363.13 | 12 |
| Ucb, Inc. | $235.38 | 17 |
| Pfizer Inc. | $233.47 | 14 |
What the 2025 payments were for
- Food and Beverage$3,745 · 171 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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