Michael Sullivan, M.D.
NPI 1326023078 · Gastroenterology Physician · Kingsport, TN
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Sullivan, M.D. is a Gastroenterology Physician provider in Kingsport, TN (NPI 1326023078).
Provider details
- NPI number
- 1326023078
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 15419 (TN)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
357 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) |
|---|---|---|
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 164 | $125 |
| Dilation of Esophagus43450 | 90 | $37 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 36 | $175 |
| Diagnostic Exam of Large Bowel Using a Flexible Endoscope45378 | 30 | $168 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 26 | $188 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High Risk |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 392 | 161 |
| Famotidine | 278 | 121 |
| Omeprazole | 92 | 48 |
| Sucralfate | 86 | 39 |
| Ondansetronbrand: Ondansetron Odt | 71 | 53 |
| Dexlansoprazolebrand: Dexlansoprazole Dr | 60 | 22 |
| Linaclotidebrand: Linzess | 47 | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$766 across 49 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
- 2005-12-14
- Last updated
- 2023-11-28
- Certified
- 2023-11-28
Frequently asked questions
- What is Michael Sullivan's NPI number?
- Michael Sullivan's National Provider Identifier (NPI) is 1326023078, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Sullivan's specialty?
- Michael Sullivan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Sullivan located?
- Michael Sullivan's practice location on file with NPPES is 2204 Pavilion Dr Ste 108, Kingsport, TN 37660-4651.
- What is Michael Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Michael Sullivan is (423) 392-6100.
- Does Michael Sullivan accept Medicare?
- Michael Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Sullivan's NPI active?
- Yes — Michael Sullivan's NPI (1326023078) is active in the NPPES registry as of the last update on 2023-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.