DR. THOMAS JOSEPH HORNYAK M.D., PH.D.
NPI 1306980602
Dermatology in Bethesda, MD
About Dr. Thomas Joseph Hornyak M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOMAS JOSEPH HORNYAK M.D., PH.D. (NPI 1306980602) is an individual dermatology provider in Bethesda, Maryland, licensed in Michigan (4301073444) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS and is a graduate of University Of Michigan Medical School (1992).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Thomas Joseph Hornyak M.d., Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Thomas Hornyak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Columbia, MD 21045
- Reassigned Medicare billing, Maryland enrollment
- 20 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20892 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BETHESDA, MD 20892
BETHESDA, MD 20892
BETHESDA, MD 20892
BETHESDA, MD 20892
BETHESDA, MD 20892
BETHESDA, MD 20892
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Thomas Hornyak's NPI number?
The NPI number for Thomas Hornyak is 1306980602. It was assigned to this individual provider in the NPPES registry on February 19, 2007.
Where is Thomas Hornyak located?
Thomas Hornyak practices at 10 Center Dr Building 10, Room 12n242, Msc1908, Bethesda, MD 20892. The listed phone number is (301) 451-1926.
What is Thomas Hornyak's specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Is Thomas Hornyak enrolled in Medicare?
Yes. Thomas Hornyak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Thomas Hornyak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Hornyak reassigns Medicare benefits to University Of Maryland Dermatologists PA (Columbia, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thomas Hornyak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Thomas Hornyak was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Thomas Joseph Hornyak, M.D., PH.D. · NPI 1306980602
Dermatology physician in Bethesda, Maryland. Individual provider, active in the CMS NPPES registry since February 19, 2007.
## Identity
- **NPI:** 1306980602 (Entity type: Individual)
- **Enumerated:** February 19, 2007
- **Primary specialty:** Dermatology · taxonomy 207N00000X
- **State license:** 4301073444 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 10 CENTER DR, BUILDING 10, ROOM 12N242, MSC1908, Bethesda, MD 20892-0001
- **Phone:** (301) 451-1926 · **Fax:** (301) 496-5370
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** University Of Maryland Dermatologists PA (NPI 1659304152, Columbia, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1992
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1306980602) · Data from the CMS NPPES public registry.