Quick answers
- Does William J. Cosgrove Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Cosgrove Jr. 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 William J. Cosgrove Jr. see?
- In 2024, CMS data shows 1,089 Original Medicare patients and 1,350 services for William J. Cosgrove Jr.. This counts Original Medicare only and measures volume, not quality.
- What is William J. Cosgrove Jr.'s NPI number?
- 1891743829. 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 William J. Cosgrove Jr., 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 | 1,089 |
|---|---|
| Services billed to Medicare | 1,350 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Anesthesia for lens surgery (00142)1,077 services
- Anesthesia for other procedure on eye (00140)125 services
- Anesthesia for procedure on eyelid (00103)108 services
- Anesthesia for retinal surgery (00145)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 cholesterol75%
- High blood pressure73%
- Arthritis42%
- Diabetes28%
- Ischemic heart disease28%
- Anxiety19%
Hospitals where William J. Cosgrove Jr. works
Medicare's Facility Affiliation Data lists William J. Cosgrove Jr. 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.
- ProMedica Monroe Regional HospitalMonroe, MI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 230099
Practice locations
Addresses where William J. Cosgrove Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 230 W Maple RdTroy, MI 48084 (248) 244‑1500
- 718 N Macomb StMonroe, MI 48162 (734) 240‑8400
Group practices
Medicare enrollment lists William J. Cosgrove Jr. as a member of these groups (CMS data updated October 2, 2026).
- ProMedica Central Corporation of Michigan111 clinicians in the group
- Ambulatory Anesthesia Associates PC27 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Troy
Clinicians with the same Medicare primary specialty in Troy, MI — not a recommendation.
Other clinicians in ProMedica Central Corporation of Michigan
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 | 1992 (34 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891743829 |
| 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