Ian Frederick Slack, M.D.
Allergy & Immunology Physician · Ann Arbor, MI
Ian Frederick Slack, M.D. is an allergy & immunology physician with a practice address in Ann Arbor, Michigan, and NPI 1295184075, issued on Jun 13, 2016. Check the license (Michigan 4301504878, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Ian Frederick Slack
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 4301504878 MI
Self-reported in NPPES; status is on the state search - Practice location
- 24 Frank Lloyd Wright Dr, Ann Arbor, MI 48105
- Phone
- (734) 647-5940
- Enumerated
- Jun 13, 2016
- Record last updated
- Oct 18, 2022
- Medicare enrollment
- Enrolled (PECOS I20211227000415); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 137 in Michigan → Look up another NPI →
Also registered at 24 Frank Lloyd Wright Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Vahan Agbabian, MA, ATCAthletic Trainer1487759676
- William Aibinder, MDOrthopaedic Surgery Physician1225474042
- Nevin Ajluni, M.D.Endocrinology, Diabetes & Metabolism Physician1407019995
- Sarah Akers, LPNLicensed Practical Nurse1063383396
Verify Ian Frederick Slack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301504878Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
14 Medicare Part D claims, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $66.25
1 payment: food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Regents OF The University OF MichiganAnn Arbor, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Frederick Slack among 137 allergy & immunology physician records in Michigan
Ian Frederick Slack, M.D. is one of 137 allergy & immunology physician records with a practice address in Michigan. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 91% of them.
- NPI issued2016 · 91% of these records are older, 5% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2016 · median 2001 among the 98 with a school on file
- Record last updated2022 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Michigan
There are 137 allergy & immunology physician records in Michigan.
All 137 in Michigan → Every provider in Ann Arbor → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Ulus Atasoy, MDAnn Arbor, MI 481051306875471
- James Baldwin, MDAnn Arbor, MI 481051508955428
- Alan Baptist, MDAnn Arbor, MI 481051043257751
- Ruizhi Dong, MDAnn Arbor, MI 481051235520990
- Lauren Franzblau, MDAnn Arbor, MI 481051851895650
- Mirie Hosler, MDAnn Arbor, MI 481051578645834
- Deborah Lee, MDAnn Arbor, MI 481051770946071
- Marc McMorris, MDAnn Arbor, MI 481051104915032
Common questions
What is Ian Frederick Slack, M.D.'s NPI number?
Ian Frederick Slack, M.D.'s National Provider Identifier (NPI) is 1295184075, issued on Jun 13, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ian Frederick Slack, M.D. located?
The NPPES record lists a practice address at 24 Frank Lloyd Wright Dr, Ann Arbor, MI, 48105. Phone: (734) 647-5940. Providers update this record themselves, so call before visiting.
How can I verify Ian Frederick Slack, M.D.'s license?
NPPES lists Michigan license number 4301504878, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ian Frederick Slack, M.D. prescribe under Medicare Part D?
In 2024, Ian Frederick Slack, M.D. had 14 Medicare Part D claims; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.