Unni Udayasankar, MD
NPI 1568647253 · Pediatric Radiology Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Unni Udayasankar, MD is a Pediatric Radiology Physician provider in Tucson, AZ (NPI 1568647253).
Provider details
- NPI number
- 1568647253
- Entity type
- Individual
- Primary specialty
- Pediatric Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 49896 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
495 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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 163 | $38 |
| Mri Scan of Brain Before and After Contrast70553 | 66 | $104 |
| Ct Scan of Upper Spine Without Contrast72125 | 51 | $43 |
| Ct Scan of Lower Spine Without Contrast72131 | 40 | $43 |
| Ct Scan of Middle Spine Without Contrast72128 | 38 | $43 |
| Mri Scan of Brain Before and After Contrast70553 | 31 | $102 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$84 across 1 record (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)
- 4291 N Campbell AveTucson, AZ 85719-1117Phone: (520) 694-9640
Registry dates
- Enumerated
- 2008-01-01
- Last updated
- 2025-07-22
- Certified
- 2025-07-22
Frequently asked questions
- What is Unni Udayasankar's NPI number?
- Unni Udayasankar's National Provider Identifier (NPI) is 1568647253, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Unni Udayasankar's specialty?
- Unni Udayasankar is listed in the NPPES registry with a primary specialty of Pediatric Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Unni Udayasankar located?
- Unni Udayasankar's practice location on file with NPPES is 1625 N Campbell Ave, Tucson, AZ 85719-4330.
- What is Unni Udayasankar's phone number?
- The practice phone number listed in the NPPES registry for Unni Udayasankar is (520) 694-0111.
- Does Unni Udayasankar accept Medicare?
- Unni Udayasankar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Unni Udayasankar's NPI active?
- Yes — Unni Udayasankar's NPI (1568647253) is active in the NPPES registry as of the last update on 2025-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.