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ST JOSEPH MERCY HOSPITAL
NPI 1730207580
Internal Medicine in Ypsilanti, MI

Active since March 27, 2007
111 N HURON ST, SUITE 200, YPSILANTI, MI 48197(734) 547-7977 Get Directions Write a Review

NPPES record last updated: May 4, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 4, 2026, Jul 1, 2024 (2 updates tracked since 2024).

About St Joseph Mercy Hospital NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ST JOSEPH MERCY HOSPITAL (NPI 1730207580), doing business as Trinity Health Ann Arbor Hospital, is a healthcare organization registered as an internal medicine in Ypsilanti, Michigan and active in the NPI registry since March 2007. The organization lists Ariana Grace Raymond, Manager Provider Enrollment, as its authorized official.

NPPES Registry Identity

NPI1730207580
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameST JOSEPH MERCY HOSPITAL
Location Address111 N HURON ST, SUITE 200Ypsilanti, MI 48197-2676
Mailing Address34505 W 12 Mile Rd Ste 200Farmington Hills, MI 48331-3286 · (734) 343-3922
Phone(734) 547-7977
Organization SubpartNo
Authorized OfficialAriana Grace RaymondManager Provider Enrollment · (734) 343-1466
Enumeration DateMarch 27, 2007
Last NPPES UpdateMay 4, 20262 updates tracked since enumeration
NPPES CertifiedMay 4, 2026
✔ NPI 1730207580 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X
111 N HURON ST, Ypsilanti, MI 48197
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Other Names 1

Doing Business AsTrinity Health Ann Arbor Hospital

Other Identifiers 1

Other110H111120MI · Bs Bcn Habp

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ST JOSEPH MERCY HOSPITAL
Family Medicine
111 N HURON ST, SUITE 203
YPSILANTI, MI 48197
Washtenaw County (734) 547-7977
DR. COREY R DEAN M.D.
Internal Medicine
111 N HURON ST
YPSILANTI, MI 48197
Washtenaw County (734) 547-7977
IHA HEALTH SERVICES CORPORATION
Internal Medicine (Adolescent Medicine)
111 N HURON ST, SUITE 200
YPSILANTI, MI 48197
Washtenaw County (734) 547-7977
SARA ANN PLATTE M.D.
Internal Medicine
111 N HURON ST, SUITE #200
YPSILANTI, MI 48197
Washtenaw County (734) 547-7977
PATRICIA MCNALLY MD
Internal Medicine
111 N HURON ST, SUITE #200
YPSILANTI, MI 48197
Washtenaw County (734) 547-7977
JOHN WATT MD
Internal Medicine (Adolescent Medicine)
111 N HURON ST, SUITE #200
YPSILANTI, MI 48197
Washtenaw County (734) 547-7977
CLAUDIA PATRICE MELLOR BALFE PA-C
Physician Assistant
111 N HURON ST
YPSILANTI, MI 48197
Washtenaw County (734) 547-7977
WALLACE CHRISTY MD
Internal Medicine
111 N HURON ST, SUITE #203
YPSILANTI, MI 48197
Washtenaw County (734) 547-7900

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is St Joseph Mercy Hospital's NPI number?

The NPI number for St Joseph Mercy Hospital is 1730207580. It was assigned to this organization in the NPPES registry on March 27, 2007. The provider is doing business as Trinity Health Ann Arbor Hospital.

Where is St Joseph Mercy Hospital located?

St Joseph Mercy Hospital is located at 111 N Huron St Suite 200, Ypsilanti, MI 48197. The listed phone number is (734) 547-7977.

What is St Joseph Mercy Hospital's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for St Joseph Mercy Hospital was last updated on May 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.