Quick answers
- Which hospitals does Mary M. Henry work at?
- Medicare's official clinician data lists Mary M. Henry at 4 hospitals: Anderson Hospital, SSM Health Saint Louis University Hospital, SSM Health St Mary's Hospital - St Louis and SSM Health St. Mary's Hospital - Jefferson City. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary M. Henry see patients?
- Medicare's clinician data lists 4 practice locations, including Alton, IL, Saint Louis, MO and Maryville, IL. Call before your visit to confirm the address.
- What is Mary M. Henry's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Mary M. Henry accept Medicare assignment?
- Yes. Medicare's clinician data says Mary M. Henry accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mary M. Henry?
- (618) 474-6355, as listed in official Medicare / NPI Registry data.
- What is Mary M. Henry's NPI number?
- 1144283136. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary M. Henry works
Medicare's Facility Affiliation Data lists Mary M. Henry at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Anderson HospitalMaryville, IL · Acute Care Hospital · CCN 140289
- SSM Health Saint Louis University HospitalSaint Louis, MO · Acute Care Hospital · CCN 260105
- SSM Health St Mary's Hospital - St LouisSaint Louis, MO · Acute Care Hospital · CCN 260091
- SSM Health St. Mary's Hospital - Jefferson CityJefferson City, MO · Acute Care Hospital · CCN 260011
Practice locations
Addresses where Mary M. Henry is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Saint Anthonys WayAlton, IL 62002 (618) 474‑6355
- 10101 Woodfield LnSaint Louis, MO 63132
- 1402 S Grand BlvdSaint Louis, MO 63104 (314) 577‑8475
- 6800 State Route 162Maryville, IL 62062 (618) 288‑5711
Group practices
Medicare enrollment lists Mary M. Henry as a member of this group (CMS data updated 2026-10-02).
- SSM Health Care Group940 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Alton
Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1980 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1144283136 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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