Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Gregory Michael Mlacker, MD

Individual provider Diagnostic Radiology Physician · NPI 1205219904

Gregory Michael Mlacker, MD practises Diagnostic Radiology in Grand Rapids, Michigan. Graduated from University of Miami, Lm Miller School of Medicine in 2015, 11 years ago. Practices with Advanced Radiology Services PC, a 252-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California and Michigan.

Years since qualifying
11
Trained at
University of Miami, Lm Miller School of Medicine
Licensed in
CA, MI
In the registry since
2015
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3264 N Evergreen Dr NE
Grand Rapids, MI 49525-9746
Phone: (616) 363-7272
Fax: (616) 361-5828
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 505 Parnassus Ave, San Francisco, CA 94143-2204 — (415) 353-1821
  • 44405 Woodward Ave, Pontiac, MI 48341-5023 — (248) 858-6233

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 4301504388 (MI)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence A166901 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence L801239 (MI)

Record details

NPI number1205219904
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 30, 2015
Last updated in NPPESJuly 15, 2021
Certification dateJuly 15, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF MIAMI, LM MILLER SCHOOL OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Advanced Radiology Services Pc — 252 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients2,258
Services billed 3,390 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Advanced Radiology Services PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 252 clinicians in the practice; 12 are shown here.

Other providers in Grand Rapids