Chandan Nayak, MD
NPI 1538204987 · Psychiatry Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chandan Nayak, MD is a Psychiatry Physician provider in Tucson, AZ (NPI 1538204987).
Provider details
- NPI number
- 1538204987
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 63889 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
263 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 210 | $127 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 37 | $172 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 16 | $71 |
Typical Medicare-allowed amounts for these services range $71–$172 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Aripiprazole | 128 | 19 |
| Sertraline Hcl | 116 | 12 |
| Escitalopram Oxalate | 115 | 18 |
| Risperidone | 108 | 11 |
| Quetiapine Fumarate | 92 | 14 |
| Clozapine | 83 | — |
| Fluoxetine Hcl | 70 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$445 across 11 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1376 Summit AvenueCourt D, Unit 5bOakbrook Terrace, IL 60181-3985Phone: (630) 629-6550Fax: (630) 629-6558
Registry dates
- Enumerated
- 2007-02-21
- Last updated
- 2025-07-10
- Certified
- 2025-07-10
Frequently asked questions
- What is Chandan Nayak's NPI number?
- Chandan Nayak's National Provider Identifier (NPI) is 1538204987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chandan Nayak's specialty?
- Chandan Nayak is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Chandan Nayak located?
- Chandan Nayak's practice location on file with NPPES is 3110 N Swan Rd, Tucson, AZ 85712-1227.
- What is Chandan Nayak's phone number?
- The practice phone number listed in the NPPES registry for Chandan Nayak is (520) 780-8413.
- Does Chandan Nayak accept Medicare?
- Chandan Nayak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chandan Nayak's NPI active?
- Yes — Chandan Nayak's NPI (1538204987) is active in the NPPES registry as of the last update on 2025-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.