John Sullivan, M.D.
NPI 1952368557 · Diagnostic Radiology Physician · Marquette, MI
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sullivan, M.D. is a Diagnostic Radiology Physician provider in Marquette, MI (NPI 1952368557).
Provider details
- NPI number
- 1952368557
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 39464 (KY)
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
20 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
5,037 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 1,450 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 622 | $38 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 388 | $83 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 371 | $80 |
| Ct Scan of Chest Without Contrast71250 | 234 | $49 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 210 | $83 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$211 across 8 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)
- 1218 S BroadwaySuite 310Lexington, KY 40504-2759Phone: (859) 219-0542Fax: (859) 219-9433
Registry dates
- Enumerated
- 2006-04-27
- Last updated
- 2022-08-03
- Certified
- 2022-08-03
Frequently asked questions
- What is John Sullivan's NPI number?
- John Sullivan's National Provider Identifier (NPI) is 1952368557, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sullivan's specialty?
- John Sullivan is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Sullivan located?
- John Sullivan's practice location on file with NPPES is 850 W Baraga Ave, Marquette, MI 49855-4550.
- What is John Sullivan's phone number?
- The practice phone number listed in the NPPES registry for John Sullivan is (906) 449-3000.
- Does John Sullivan accept Medicare?
- John Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sullivan's NPI active?
- Yes — John Sullivan's NPI (1952368557) is active in the NPPES registry as of the last update on 2022-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.