Independent US Healthcare Provider Directory & Public Medical Database Patient Guides
Medical Specialty Listing

Allergy & Immunology Specialists in Ann Arbor, MI

Browse 20 Allergy & Immunology providers listed in NPPES with a practice address in Ann Arbor, Michigan.

20 Healthcare Providers

How Ann Arbor compares with the U.S.

Ann Arbor has 16 clinicians in Allergy & Immunology per 100,000 residents, 14.0 times the U.S. rate of 1.2.

That is 20 active clinicians in Allergy & Immunology with a practice address in Ann Arbor, for a population of 122,036.

The Michigan rate is 1.4 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Allergy & Immunology in Ann Arbor listed in the CMS Medicare file (16 of 16) accept Medicare assignment. That is similar to the Michigan share of 99%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

69% of clinicians in Allergy & Immunology in Ann Arbor listed in the CMS Medicare file (11 of 16) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Michigan share of 44%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Allergy & Immunology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Allergy & Immunology practitioners in Ann Arbor, MI

Source: CMS PECOS
PECOS Enrolled Specialists 18 In Ann Arbor, MI
Part B Lab & Imaging Eligible 18 Diagnostic Referrals
DME Ordering Eligible 18 Durable Medical Equipment
Home Health Agency Referrals 18 HHA Ordering Eligible
Showing 1โ€“20 of 20 providers
With recent CMS data first, then Aโ€“Z

Dr. Ulus Atasoy , MD

Allergy & Immunology

Active NPI Status
2215 Fuller Rd, Ann Arbor, MI 481052303
Phone: 7347697100
NPI Identifier 1306875471
View Full Profile

Dr. James L Baldwin , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Suite H-2100, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1508955428
View Full Profile

Dr. Alan P Baptist , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Suite H-2100, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1043257751
View Full Profile

Dr. Ruizhi Dong , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1235520990
View Full Profile

Dr. Sara Sadeghi Ellingwood , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
380 Parkland Plz, Ann Arbor, MI 481036201
Phone: 7346475940
NPI Identifier 1467985432
View Full Profile

Dr. Lauren Franzblau , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1851895650
View Full Profile

Dr. George Edmond Freigeh , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
380 Parkland Plz, Ann Arbor, MI 481036201
Phone: 7346475940
NPI Identifier 1356716658
View Full Profile

Dr. Lawrence R Hennessey , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
325 Briarwood Cir, Ann Arbor, MI 481081605
Phone: 7346475940
NPI Identifier 1629078142
View Full Profile

Dr. Mirie Roanne Hosler , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1578645834
View Full Profile

Dr. Deborah Lynne Lee , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1770946071
View Full Profile

Dr. Marc S Mcmorris , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Drive, Suite H-2100, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1104915032
View Full Profile

Dr. Kelly Marie O'shea , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
24 Frank Lloyd Wright Dr, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1427445022
View Full Profile

Dr. Mohammed R Rafeeq , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
24 Frank Lloyd Wright Dr, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1235124504
View Full Profile

Dr. Georgiana M Sanders , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
24 Frank Lloyd Wright Dr, Suite H-2100, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1235228107
View Full Profile

Dr. Charles Frank Schuler , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Suite H-2100, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1396156543
View Full Profile

Dr. Ian Frederick Slack , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
24 Frank Lloyd Wright Dr, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1295184075
View Full Profile

Dr. Aimee Leyton Speck , MD

Allergy & Immunology

Active NPI Status Accepts Medicare Assignment
24 Frank Lloyd Wright Dr, Suite H-2100, Ann Arbor, MI 481059484
Phone: 7346475940
NPI Identifier 1164682894
View Full Profile

Dr. Fadi Toro , MD, MMSC

Allergy & Immunology

Active NPI Status
24 Frank Lloyd Wright Dr Ste H-2100, Ann Arbor, MI 481059484
Phone: 7342324986
NPI Identifier 1740952647
View Full Profile

Dr. Sherry Zhou , MD

Allergy & Immunology

Active NPI Status
1500 E Medical Center Dr, 3116 Taubman Center, Spc 5368, Ann Arbor, MI 481095000
Phone: 7349365582
NPI Identifier 1376921452
View Full Profile

Dr. Emma Greimann , MD

Allergy & Immunology

Active NPI Status
24 Frank Lloyd Wright Drive, Box 442 Suite H 2100, Ann Arbor, MI 48105
Phone: 7349365634
NPI Identifier 1528704384
View Full Profile

Frequently Asked Questions about Allergy & Immunology in Ann Arbor

How do I check a Allergy & Immunology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Michigan licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.