Quick answers
- Does Chadron J. Vassar accept Medicare assignment?
- Yes. Medicare's clinician data says Chadron J. Vassar 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 Chadron J. Vassar see?
- In 2024, CMS data shows 373 Original Medicare patients and 434 services for Chadron J. Vassar. This counts Original Medicare only and measures volume, not quality.
- What is Chadron J. Vassar's NPI number?
- 1962898825. 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 Chadron J. Vassar, 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 | 373 |
|---|---|
| Services billed to Medicare | 434 |
| Different services or procedures | 71 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for procedure for total knee joint replacement (01402)34 services
- Anesthesia for other procedure on upper abdomen (00790)33 services
- Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)33 services
- Anesthesia for bone marrow aspiration and/or biopsy at pelvic bone (01112)24 services
- Anesthesia for other closed procedure on chest (00520)22 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 cholesterol73%
- Arthritis57%
- Diabetes31%
- Ischemic heart disease28%
- Chronic kidney disease26%
Hospitals where Chadron J. Vassar works
Medicare's Facility Affiliation Data lists Chadron J. Vassar 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.
- Avera St LukesAberdeen, SD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 430014
- Northern Light Eastern Maine Medical CenterBangor, ME · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 200033
- Trinity HospitalsMinot, ND · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 350006
Practice locations
Addresses where Chadron J. Vassar is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1 Northeast Dr, Northern Light CardiologyBangor, ME 04401 (207) 275‑3800
- 200 Hawkins DrIowa City, IA 52242 (319) 356‑1616
- 2305 37th Ave SWMinot, ND 58701 (701) 418‑8000
- 302 Husson AveBangor, ME 04401 (207) 947‑6141
- 305 S State StAberdeen, SD 57401
Group practices
Medicare enrollment lists Chadron J. Vassar as a member of these groups (CMS data updated October 2, 2026).
- State University of Iowa1,897 clinicians in the group
- Eastern Maine Medical Center624 clinicians in the group
- Trinity Health290 clinicians in the group
- Avera St Lukes165 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Bangor
Clinicians with the same Medicare primary specialty in Bangor, ME — not a recommendation.
Other clinicians in State University of Iowa
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962898825 |
| 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