Quick answers
- Does James R. Mlejnek Ii accept Medicare assignment?
- Yes. Medicare's clinician data says James R. Mlejnek Ii 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 James R. Mlejnek Ii see?
- In 2024, CMS data shows 201 Original Medicare patients and 274 services for James R. Mlejnek Ii. This counts Original Medicare only and measures volume, not quality.
- What is James R. Mlejnek Ii's NPI number?
- 1548423155. 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 James R. Mlejnek Ii, 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 | 201 |
|---|---|
| Services billed to Medicare | 274 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)75 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)69 services
- Emergency department visit with moderate level of medical decision making (99284)58 services
- Emergency department visit with low level of medical decision making (99283)38 services
- Critical care, first 30-74 minutes (99291)12 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%
- Arthritis59%
- Ischemic heart disease51%
- Anxiety44%
- Depression40%
Hospitals where James R. Mlejnek Ii works
Medicare's Facility Affiliation Data lists James R. Mlejnek Ii 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.
- MyMichigan Medical Center ClareClare, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 230180
- MyMichigan Medical Center GladwinGladwin, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231325
- MyMichigan Medical Center MidlandMidland, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 230222
Practice locations
Addresses where James R. Mlejnek Ii is enrolled with Medicare (CMS data updated October 2, 2026).
- 4000 Wellness DrMidland, MI 48670 (989) 633‑8018
- 703 N McEwan StClare, MI 48617 (989) 802‑5000
Group practices
Medicare enrollment lists James R. Mlejnek Ii as a member of these groups (CMS data updated October 2, 2026).
- MyMichigan Medical Center Midland507 clinicians in the group
- MyMichigan Medical Center Clare131 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Midland
Clinicians with the same Medicare primary specialty in Midland, MI — not a recommendation.
Other clinicians in MyMichigan Medical Center Midland
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548423155 |
| 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