JAMES L BALDWIN MD
NPI 1508955428
Allergy & Immunology in Ann Arbor, MI
About James L Baldwin Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES L BALDWIN MD (NPI 1508955428) is an individual allergy & immunology provider in Ann Arbor, Michigan, licensed in Michigan (4301064624) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of University Of Connecticut School Of Medicine (1989).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
James L Baldwin Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show James Baldwin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ann Arbor, MI 48103
- Reassigned Medicare billing, Michigan enrollment
- 25 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIReferred Medical Equipment & Supplies CMS DME claims 6
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ANN ARBOR, MI 48105
ANN ARBOR, MI 48105
ANN ARBOR, MI 48105
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 James Baldwin's NPI number?
The NPI number for James Baldwin is 1508955428. It was assigned to this individual provider in the NPPES registry on October 11, 2006.
Where is James Baldwin located?
James Baldwin practices at 24 Frank Lloyd Wright Dr Suite H-2100, Ann Arbor, MI 48105. The listed phone number is (734) 647-5940.
What is James Baldwin's specialty?
The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.
Is James Baldwin enrolled in Medicare?
Yes. James Baldwin is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for James Baldwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Baldwin reassigns Medicare benefits to Regents Of The University Of Michigan (Ann Arbor, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Baldwin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Baldwin accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list James Baldwin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is James Baldwin affiliated with any hospitals?
According to CMS data, James Baldwin is affiliated with University Of Michigan Health System.
When was this NPI record last updated?
The NPPES record for James Baldwin was last updated on October 13, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.
# James L Baldwin, MD · NPI 1508955428
Allergy & Immunology physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since October 11, 2006.
## Identity
- **NPI:** 1508955428 (Entity type: Individual)
- **Enumerated:** October 11, 2006
- **Primary specialty:** Allergy & Immunology · taxonomy 207K00000X
- **State license:** 4301064624 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 24 FRANK LLOYD WRIGHT DR, SUITE H-2100, Ann Arbor, MI 48105-9484
- **Phone:** (734) 647-5940
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Regents Of The University Of Michigan (NPI 1700816881, Ann Arbor, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Connecticut School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** October 13, 2011
- **Other identifiers:** Medicaid 3085807 (MI); Medicare ID-Type Unspecified 0N21420002 (MI); Medicare UPIN G07644 (MI)
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Source: [NPI Profile](https://npiprofile.com/npi/1508955428) · Data from the CMS NPPES public registry.