Mark Tann, M.D.
NPI 1841239746 · Nuclear Radiology Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Tann, M.D. is a Nuclear Radiology Physician provider in Indianapolis, IN (NPI 1841239746).
Provider details
- NPI number
- 1841239746
- Entity type
- Individual
- Primary specialty
- Nuclear Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01056509A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,083 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) |
|---|---|---|
| Nuclear Medicine Study From Skull Base to Mid-Thigh With Ct Scan78815 | 591 | $105 |
| Radioactive Drug Therapy Through a Vein79101 | 129 | $87 |
| Nuclear Medicine Study Whole Body With Ct Scan78816 | 108 | $106 |
| Nuclear Medicine Study of Bone And/Or Joint Whole Body78306 | 51 | $36 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 34 | $71 |
| Nuclear Medicine Study of Lung Ventilation and Circulation78582 | 31 | $46 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$778 across 13 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
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2021-03-05
- Certified
- 2021-03-05
Frequently asked questions
- What is Mark Tann's NPI number?
- Mark Tann's National Provider Identifier (NPI) is 1841239746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Tann's specialty?
- Mark Tann is listed in the NPPES registry with a primary specialty of Nuclear Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Tann located?
- Mark Tann's practice location on file with NPPES is 714 N Senate Ave, Indianapolis, IN 46202-3763.
- What is Mark Tann's phone number?
- The practice phone number listed in the NPPES registry for Mark Tann is (317) 715-6402.
- Does Mark Tann accept Medicare?
- Mark Tann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Tann's NPI active?
- Yes — Mark Tann's NPI (1841239746) is active in the NPPES registry as of the last update on 2021-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.