Quick answers
- Does Sharon M. O'Leary accept Medicare assignment?
- Yes. Medicare's clinician data says Sharon M. O'Leary 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 Sharon M. O'Leary see?
- In 2024, CMS data shows 17 Original Medicare patients and 20 services for Sharon M. O'Leary. This counts Original Medicare only and measures volume, not quality.
- What is Sharon M. O'Leary's NPI number?
- 1073526976. 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 Sharon M. O'Leary, 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 | 17 |
|---|---|
| Services billed to Medicare | 20 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Hospitals where Sharon M. O'Leary works
Medicare's Facility Affiliation Data lists Sharon M. O'Leary 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.
- Trinity Health Ann Arbor HospitalAnn Arbor, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230156
Practice locations
Addresses where Sharon M. O'Leary is enrolled with Medicare (CMS data updated October 2, 2026).
- 4936 W Clark RdYpsilanti, MI 48197 (734) 434‑6200
- 775 S Main StChelsea, MI 48118
Group practices
Medicare enrollment lists Sharon M. O'Leary as a member of this group (CMS data updated October 2, 2026).
- Iha Health Services Corporation1,168 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Ypsilanti
Clinicians with the same Medicare primary specialty in Ypsilanti, MI — not a recommendation.
Other clinicians in Iha Health Services Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Michigan State University College Of Human Medicine |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1073526976 |
| 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