Quick answers
- Does Cristina C. Sullivan accept Medicare assignment?
- Yes. Medicare's clinician data says Cristina C. 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 Cristina C. Sullivan see?
- In 2024, CMS data shows 148 Original Medicare patients and 201 services for Cristina C. Sullivan. This counts Original Medicare only and measures volume, not quality.
- What is Cristina C. Sullivan's NPI number?
- 1396915492. 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 Cristina C. 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 | 148 |
|---|---|
| Services billed to Medicare | 201 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Anesthesia for procedure for total knee joint replacement (01402)25 services
- Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)23 services
- Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)21 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)13 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 cholesterol67%
- High blood pressure64%
- Arthritis62%
- Depression22%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)22%
- Ischemic heart disease21%
Practice locations
Addresses where Cristina C. Sullivan is enrolled with Medicare (CMS data updated October 2, 2026).
- 2360 Mullan Rd, Suite CMissoula, MT 59808 (406) 721‑4436
Group practices
Medicare enrollment lists Cristina C. Sullivan as a member of this group (CMS data updated October 2, 2026).
- Missoula Bone and Joint LLC57 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Missoula
Clinicians with the same Medicare primary specialty in Missoula, MT — not a recommendation.
Other clinicians in Missoula Bone and Joint LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Utah School Of Medicine |
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396915492 |
| 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
- 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