Chandan Nayak, MD
NPI 1538204987ActiveIndividual· Psychiatry & Neurology, Psychiatry· Tucson, AZ
Psychiatry & Neurology, Psychiatry (MD) in Tucson, Arizona, trained at Wayne State University School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $162,479 for 1,854 claims, against $25,163 paid for services in 2024. Abbvie Inc. was the largest of 6 companies reporting payments in 2025, $510.16 in all, mostly food and beverage.
Overview
| NPI | 1538204987 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 21, 2007 |
| Last updated in NPPES | Jul 10, 2025 |
| Certified by provider | Jul 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 63889 | AZ |
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 - Psychiatry (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 89 |
|---|---|
| Services billed | 293 across 10 procedure codes |
| Paid by Medicare | $25,163 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,854 · 2,472 30-day fills |
|---|---|
| Patients | 109 |
| Total drug cost | $162,479 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Psychiatry |
Medical group
- Rodasi LLCHoffman Estates, IL · 35 clinicians
Industry payments (Open Payments)
- 2025$510.16 · 15 payments from 6 companies
- 2024$444.79 · 11 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $329.58 | 8 |
| Alkermes, Inc. | $62.14 | 2 |
| Otsuka America Pharmaceutical, Inc. | $40.90 | 2 |
| Indivior Inc. | $29.33 | 1 |
| Janssen Pharmaceuticals, Inc | $28.67 | 1 |
What the 2025 payments were for
- Food and Beverage$510.16 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 313 psychiatrists in Tucson · All psychiatrists in Arizona