Quick answers
- Does Christian J. Sullivan accept Medicare assignment?
- Yes. Medicare's clinician data says Christian J. Sullivan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Christian J. Sullivan see?
- In 2024, CMS data shows 357 Original Medicare patients and 2,869 services for Christian J. Sullivan. This counts Original Medicare only and measures volume, not quality.
- What is Christian J. Sullivan's NPI number?
- 1659669273. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Christian J. Sullivan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 357 |
|---|---|
| Services billed to Medicare | 2,869 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (99439)1,115 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)624 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)279 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)266 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)94 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Ischemic heart disease34%
- Diabetes32%
- Depression27%
Hospitals where Christian J. Sullivan works
Medicare's Facility Affiliation Data lists Christian J. Sullivan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Johnston Memorial HospitalAbingdon, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490053
- Russell County HospitalLebanon, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490002
- Wellmont Bristol Regional Medical CenterBristol, TN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 440012
- Wellmont Holston Valley Medical CenterKingsport, TN · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 440017
Practice locations
Addresses where Christian J. Sullivan is enrolled with Medicare (CMS data updated October 2, 2026).
- 235 Medical Park BlvdBristol, TN 37620 (423) 274‑6350
Group practices
Medicare enrollment lists Christian J. Sullivan as a member of this group (CMS data updated October 2, 2026).
- Gastroenterology Associates25 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Bristol
Clinicians with the same Medicare primary specialty in Bristol, TN — not a recommendation.
Other clinicians in Gastroenterology Associates
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659669273 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians