Quick answers
- Does Clarence R. Barnett accept Medicare assignment?
- Yes. Medicare's clinician data says Clarence R. Barnett 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 Clarence R. Barnett see?
- In 2024, CMS data shows 79 Original Medicare patients and 743 services for Clarence R. Barnett. This counts Original Medicare only and measures volume, not quality.
- What is Clarence R. Barnett's NPI number?
- 1558320846. 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 Clarence R. Barnett, 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 | 79 |
|---|---|
| Services billed to Medicare | 743 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)118 services
- Insertion of needle into vein for collection of blood sample (36415)110 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)109 services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)100 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)59 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 cholesterol75%
- High blood pressure66%
- Arthritis39%
- Ischemic heart disease24%
- Depression22%
- Diabetes20%
Hospitals where Clarence R. Barnett works
Medicare's Facility Affiliation Data lists Clarence R. Barnett 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.
- Corewell Health Pennock HospitalHastings, MI · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 231339
- Sparrow Ionia HospitalIonia, MI · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 231331
- Spectrum Health United HospitalGreenville, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 230035
Practice locations
Addresses where Clarence R. Barnett is enrolled with Medicare (CMS data updated October 2, 2026).
- 1020 4th AveLake Odessa, MI 48849 (616) 374‑8881
Specialties
- Family Practiceprimary
Other family doctors in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 1981 (45 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558320846 |
| 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