Quick answers
- Does Zachary Zemore accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary Zemore 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 Zachary Zemore see?
- In 2024, CMS data shows 198 Original Medicare patients and 260 services for Zachary Zemore. This counts Original Medicare only and measures volume, not quality.
- What is Zachary Zemore's NPI number?
- 1477908234. 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 Zachary Zemore, 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 | 198 |
|---|---|
| Services billed to Medicare | 260 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)132 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)25 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)21 services
- Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)14 services
- Hospital discharge day management, 30 minutes or less (99238)14 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 cholesterol67%
- Ischemic heart disease41%
- Arthritis39%
- Depression35%
- COPD33%
Hospitals where Zachary Zemore works
Medicare's Facility Affiliation Data lists Zachary Zemore 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.
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 270004
- Campbell County HealthGillette, WY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 530002
- Johnson County Healthcare CenterBuffalo, WY · Critical Access Hospital · Emergency services: not listed by Medicare · CCN 531308
- Sheridan Memorial HospitalSheridan, WY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 530006
Practice locations
Addresses where Zachary Zemore is enrolled with Medicare (CMS data updated October 2, 2026).
- 1401 W 5th StSheridan, WY 82801 (307) 672‑1000
- 2800 10th Ave NBillings, MT 59101 (406) 657‑4000
Group practices
Medicare enrollment lists Zachary Zemore as a member of these groups (CMS data updated October 2, 2026).
- Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group
- Memorial Hospital of Sheridan County91 clinicians in the group
Specialties
- Internal Medicineprimary
- Emergency Medicinealso
Other internal medicine doctors in Sheridan
Clinicians with the same Medicare primary specialty in Sheridan, WY — not a recommendation.
Other clinicians in Billings Clinic Specialty Supplies and Services, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477908234 |
| 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