Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Michael H Fretzin, MD

Individual provider Procedural Dermatology Physician · NPI 1134118987

Michael H Fretzin, MD practises Dermatology in Buffalo Grove, Illinois. Qualified in 1996, 30 years ago. Practices with Scott D Glazer MD SC, a 6-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
30
Licensed in
IL
In the registry since
2005
Specialties on file
4
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

600 W Lake Cook Rd Ste 110
Buffalo Grove, IL 60089-2089 Not confirmed with CMS for 10 years — call before visiting
Phone: (847) 459-6611
Fax: (847) 459-7929
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Procedural Dermatology Physician (primary) Taxonomy 207NS0135X · Licence 036-102194 (IL)
Dermatology Physician Taxonomy 207N00000X · Licence 036102194 (IL)
Clinical & Laboratory Dermatological Immunology Physician Taxonomy 207NI0002X · Licence 036102194 (IL)
Dermatopathology Physician Taxonomy 207ND0900X · Licence 036102194 (IL)

Record details

NPI number1134118987
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 14, 2005
Last updated in NPPESDecember 23, 2015

Medicare enrollment

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

Medicare specialtyDERMATOLOGY
Medical schoolOTHER
Graduated 1996 (30 years in practice)
Group practice Scott D Glazer Md Sc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1,516 times · 96th percentile
Skin biopsy 510 times · 96th percentile
Melanoma (skin cancer) excision 47 times · 86th percentile
Removal or shaving of skin growth 46 times · 78th percentile
Removal of nail tissue 1–10 times
Removal of tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients1,759
Services billed 12,080 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Colleagues at Scott D Glazer MD SC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Buffalo Grove