NPPES file of Aug 9, 2026

Allison Chelsa Billi, M.D./PH.D.

Dermatology Physician · Ann Arbor, MI

Allison Chelsa Billi, M.D./PH.D. is a dermatology physician with a practice address in Ann Arbor, Michigan, and NPI 1639559453, issued on Jun 6, 2015. Check the license (Michigan 4301117585, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639559453
Name
Allison Chelsa Billi
Credential
M.D./PH.D.
Primary taxonomy
Dermatology Physician 207N00000X
License number
4301117585 MI
Self-reported in NPPES; status is on the state search
Practice location
24 Frank Lloyd Wright Dr, Ann Arbor, MI 48105
Phone
(734) 936-4054
Enumerated
Jun 6, 2015
Record last updated
Jul 2, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190712002477); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 2015
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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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.

  1. Jaclyn Abbott, NPPrimary Care Nurse Practitioner1952800435
  2. Alison Affinati, MD, PHDEndocrinology, Diabetes & Metabolism Physician1871983502
  3. Julie Agbabian, ATCAthletic Trainer1871641522
  4. Vahan Agbabian, MA, ATCAthletic Trainer1487759676
  5. William Aibinder, MDOrthopaedic Surgery Physician1225474042
  6. Nevin Ajluni, M.D.Endocrinology, Diabetes & Metabolism Physician1407019995

Verify Allison Chelsa Billi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301117585    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. 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).

Dermatology Physician providers in Michigan

There are 471 dermatology physician records in Michigan.

All 471 in Michigan → Every provider in Ann Arbor →

Other dermatology physician records in Michigan

  1. Sami Abbasi, DOWoodhaven, MI1083778690
  2. Martin Abbrecht, MDBirmingham, MI1326038076
  3. Stephanie Abul, MDChesterfield, MI1205366572
  4. Taylor Adlam, MDDearborn, MI1003473851
  5. Ruyof Al HusseinDetroit, MI1275376683
  6. Stetson Albertson, DOWarren, MI1427579929
  7. Nedil Aldarondo-Antonini, M.D.Fenton, MI1649450172
  8. Fahad Almutawa, M.D.Detroit, MI1396025599
  9. David Altman, MDWarren, MI1205831005
  10. Niloofar Anooshiravani, MDDearborn, MI1053729129

Common questions

What is Allison Chelsa Billi, M.D./PH.D.'s NPI number?

Allison Chelsa Billi, M.D./PH.D.'s National Provider Identifier (NPI) is 1639559453, issued on Jun 6, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Allison Chelsa Billi, M.D./PH.D. located?

The NPPES record lists a practice address at 24 Frank Lloyd Wright Dr, Ann Arbor, MI, 48105. Phone: (734) 936-4054. Providers update this record themselves, so call before visiting.

How can I verify Allison Chelsa Billi, M.D./PH.D.'s license?

NPPES lists Michigan license number 4301117585, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.