NPPES file of Aug 9, 2026

Stephanie M. Mackenzie, DO

Internal Medicine Physician · Ypsilanti, MI

Stephanie M. Mackenzie, DO is an internal medicine physician with a practice address in Ypsilanti, Michigan, and NPI 1831849058, issued on Mar 29, 2022. Check the license (Michigan 5101028481, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831849058
Name
Stephanie M. Mackenzie
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
5101028481 MI
Self-reported in NPPES; status is on the state search
Practice location
5333 Mcauley Dr RM 4001, Ypsilanti, MI 48197
Phone
(734) 712-3980
Enumerated
Mar 29, 2022
Record last updated
Sep 22, 2025
Medicare enrollment
Enrolled (PECOS I20250524000106); accepts Medicare assignment
Medical or professional school
Michigan State University College Of Osteopathic Medicine, 2022
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 5333 Mcauley Dr RM 4001

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eman AfrozeStudent in an Organized Health Care Education/Training Program1134823651
  2. Jacob Agemy, MDStudent in an Organized Health Care Education/Training Program1093657314
  3. Mhd Manar Al Jawish, MDStudent in an Organized Health Care Education/Training Program1588466536
  4. Doha Amin, DOStudent in an Organized Health Care Education/Training Program1366382202
  5. Armeena Anis, MDStudent in an Organized Health Care Education/Training Program1871343921
  6. Grace Ansah, DOStudent in an Organized Health Care Education/Training Program1447000294

Verify Stephanie M. Mackenzie 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 5101028481
    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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89% fewer Medicare Part D claims than the average internal medicine physician in 2024

343 Medicare Part D claims for 99 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 15 claims were for opioids.

  1. Stephanie Mackenzie343
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium29 claims
  2. Amlodipine Besylate18 claims
  3. Furosemide14 claims
  4. Lisinopril11 claims
  5. Prasugrel Hcl11 claims

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.

Bills Medicare through one group practice

  1. Iha Health Services CorporationPontiac, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Stephanie M. Mackenzie among 5,735 internal medicine physician records in Michigan

Stephanie M. Mackenzie, DO is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 87% of them.

  • NPI issued2022 · 87% of these records are older, 10% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2022 · median 2006 among the 3,564 with a school on file
  • Record last updated2025 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

198 internal medicine physician records list a practice address in Ypsilanti

They are 198 of the 3,625 NPPES records with a practice address in Ypsilanti, and 5,735 internal medicine physician records in Michigan.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Sabah Al-Attar, M.DYpsilanti, MI 481971285697821
  2. Imad Ayyar, M.D.Ypsilanti, MI 481971073515268
  3. Daniel Cahill, M.D.Ypsilanti, MI 481971801897376
  4. Jack Carman, M.D.Ypsilanti, MI 481971285635474
  5. John Hopper, MDYpsilanti, MI 481971184680977
  6. Eugene Liu, M.D.Ypsilanti, MI 481971770584930
  7. Shyam Mahesh, M.D.Ypsilanti, MI 481971962407569
  8. Marc Mastropaolo, DOYpsilanti, MI 481971982667002

Common questions

What is Stephanie M. Mackenzie, DO's NPI number?

Stephanie M. Mackenzie, DO's National Provider Identifier (NPI) is 1831849058, issued on Mar 29, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Stephanie M. Mackenzie, DO located?

The NPPES record lists a practice address at 5333 Mcauley Dr RM 4001, Ypsilanti, MI, 48197. Phone: (734) 712-3980. Providers update this record themselves, so call before visiting.

How can I verify Stephanie M. Mackenzie, DO's license?

NPPES lists Michigan license number 5101028481, 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 Stephanie M. Mackenzie, DO prescribe under Medicare Part D?

In 2024, Stephanie M. Mackenzie, DO had 343 Medicare Part D claims for 99 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.