Quick answers
- Which hospitals does James R. Baker Jr. work at?
- Medicare's official clinician data lists James R. Baker Jr. at 1 hospital: University of Michigan Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James R. Baker Jr. see patients?
- Medicare's clinician data lists 1 practice location in Ann Arbor, MI. Call before your visit to confirm the address.
- What is James R. Baker Jr.'s specialty?
- Medicare lists Allergy/Immunology as the primary specialty, and also Internal Medicine.
- Does James R. Baker Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says James R. Baker Jr. 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.
- Does James R. Baker Jr. offer telehealth?
- Medicare's clinician data says James R. Baker Jr. offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James R. Baker Jr.?
- (734) 647-5940, as listed in official Medicare / NPI Registry data.
- What is James R. Baker Jr.'s NPI number?
- 1063501989. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James R. Baker Jr. works
Medicare's Facility Affiliation Data lists James R. Baker Jr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- University of Michigan Health SystemAnn Arbor, MI · Acute Care Hospital · CCN 230046
Practice locations
Addresses where James R. Baker Jr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 24 Frank Lloyd Wright DrAnn Arbor, MI 48105 (734) 647‑5940
Group practices
Medicare enrollment lists James R. Baker Jr. as a member of this group (CMS data updated 2026-10-02).
- Regents of the University of Michigan3,346 clinicians in the group
Specialties
- Allergy/Immunologyprimary
- Internal Medicinealso
Other allergist and immunologists in Ann Arbor
Clinicians with the same Medicare primary specialty in Ann Arbor, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1063501989 |
| 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