Quick answers
- Does Phillip B. Nahirniak accept Medicare assignment?
- Yes. Medicare's clinician data says Phillip B. Nahirniak 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 Phillip B. Nahirniak see?
- In 2024, CMS data shows 251 Original Medicare patients and 601 services for Phillip B. Nahirniak. This counts Original Medicare only and measures volume, not quality.
- What is Phillip B. Nahirniak's NPI number?
- 1437681327. 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 Phillip B. Nahirniak, 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 | 251 |
|---|---|
| Services billed to Medicare | 601 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)254 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)50 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)44 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)39 services
- Hospital discharge day management, more than 30 minutes (99239)37 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%
- Arthritis71%
- Ischemic heart disease49%
- Anxiety48%
- Chronic kidney disease45%
Hospitals where Phillip B. Nahirniak works
Medicare's Facility Affiliation Data lists Phillip B. Nahirniak 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.
- Covenant Medical CenterSaginaw, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230070
- Hills & Dales General HospitalCass City, MI · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 231316
- Scheurer HospitalPigeon, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231310
Practice locations
Addresses where Phillip B. Nahirniak is enrolled with Medicare (CMS data updated October 2, 2026).
- 1447 N Harrison St, Hospitalist and Critical CareSaginaw, MI 48602 (989) 583‑4220
- 5415 Cardinal Square BlvdSaginaw, MI 48604 (989) 790‑4855
Group practices
Medicare enrollment lists Phillip B. Nahirniak as a member of this group (CMS data updated October 2, 2026).
- Covenant Medical Center, Inc.480 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Saginaw
Clinicians with the same Medicare primary specialty in Saginaw, MI — not a recommendation.
Other clinicians in Covenant Medical Center, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437681327 |
| 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