Dr. Thomas Joseph Hornyak, MD, PHD

Individual provider Dermatology Physician · NPI 1306980602

Dr. Thomas Joseph Hornyak, MD, PHD practises Dermatology in Bethesda, Maryland. Graduated from University of Michigan Medical School in 1992, 34 years ago. Practices with University of Maryland Dermatologists PA, a 16-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying: 34
Trained at: University of Michigan Medical School
Licensed in: MI
In the registry since: 2007

What do these letters mean?

MD — Doctor of Medicine: A physician who completed allopathic medical school.
PHD — Doctor of Philosophy: A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

10 Center Dr Bldg 10 Rm 12N242 MSC1908
Bethesda, MD 20892-0001 Not confirmed with CMS for 19 years — call before visiting
Phone: (301) 451-1926
Fax: (301) 496-5370

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary)	Taxonomy 207N00000X · Licence 4301073444 (MI)

Record details

NPI number	1306980602
Entity type	Individual (Type 1)
Gender	Male
Credentials	MD , PHD
Sole proprietor	No
NPI enumerated	February 19, 2007
Last updated in NPPES	July 8, 2007

Medicare enrollment

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

Medicare specialty	DERMATOLOGY
Medical school	UNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated	1992 (34 years in practice)
Group practice	University Of Maryland Dermatologists Pa — 16 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	1–10 times
Skin biopsy	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 patients	11
Services billed	49 a service is one billed item, such as a visit, a test or a procedure
Average patient age	72

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.

Colleagues at University of Maryland Dermatologists PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 16 clinicians in the practice; 12 are shown here.

Jill Allbritton, MD Dermatology Physician · Glen Burnie, MD
Simone Kristen Bergman, FNP-BC Family Nurse Practitioner · Baltimore, MD
Mandy Rachuba Criado, PA-C Physician Assistant · Lutherville, MD
Dr. Marcia Sanford Driscoll, MD Dermatology Physician · Baltimore, MD
Kristin Lee Khan, MD Dermatology Physician · Lutherville, MD
Charlotte Lanphear Medical Physician Assistant · Lutherville, MD
Dr. Cheryl Lundeberg Lonergan, MD Dermatopathology Physician · Bowie, MD
Zaineb H Makhzoumi, MD MOHS-Micrographic Surgery Physician · Baltimore, MD
Aisha Amber Mumtaz, MD Dermatology Physician · Baltimore, MD
Dr. Emily Rose Nadelmann, MD Dermatology Physician · Baltimore, MD
Shivani S Patel, MD Dermatology Physician · Lutherville, MD
Mary Elizabeth Reed Shenk, MD Dermatology Physician · Glen Burnie, MD

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