Quick answers
- Does Stewart Chumbley accept Medicare assignment?
- Yes. Medicare's clinician data says Stewart Chumbley 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 Stewart Chumbley see?
- In 2024, CMS data shows 721 Original Medicare patients and 1,837 services for Stewart Chumbley. This counts Original Medicare only and measures volume, not quality.
- What is Stewart Chumbley's NPI number?
- 1316351810. 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 Stewart Chumbley, 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 | 721 |
|---|---|
| Services billed to Medicare | 1,837 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)781 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)458 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)299 services
- Simple change of bladder tube (51705)57 services
- Simple removal of foreign body, stone, or stent in urethra or bladder using an endoscope (52310)35 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 cholesterol64%
- High blood pressure62%
- Arthritis44%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)31%
- Ischemic heart disease27%
- Diabetes20%
Hospitals where Stewart Chumbley works
Medicare's Facility Affiliation Data lists Stewart Chumbley 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.
- Bozeman Health Big Sky Medical CenterBig Sky, MT · Critical Access Hospital · Emergency services: listed by Medicare · CCN 271389
- Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 270057
- Livingston HealthcareLivingston, MT · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 271317
- Madison Valley Medical CenterEnnis, MT · Critical Access Hospital · Emergency services: listed by Medicare · CCN 271329
- St James HospitalButte, MT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 270017
Practice locations
Addresses where Stewart Chumbley is enrolled with Medicare (CMS data updated October 2, 2026).
- 915 Highland BlvdBozeman, MT 59715 (406) 414‑5000
- 925 Highland BlvdBozeman, MT 59715
- 925 Highland Blvd, Suite 1220Bozeman, MT 59715 (406) 414‑3780
- 931 Highland BlvdBozeman, MT 59715
Group practices
Medicare enrollment lists Stewart Chumbley as a member of this group (CMS data updated October 2, 2026).
- Bozeman Health Deaconess Hospital320 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Bozeman
Clinicians with the same Medicare primary specialty in Bozeman, MT — not a recommendation.
Other clinicians in Bozeman Health Deaconess Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2004 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1316351810 |
| 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