DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) – Dermatology Physician, NPI 1306980602

DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) is a healthcare provider. based in Bethesda, Maryland. specializing in DERMATOLOGY. They hold the professional credentials M.D., PH.D.. They hold a License No. 4301073444 (MI). The NPI Number for DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) is 1306980602

Main info

Male
34 Years Of Experience
Accepts Medicare Assignment
Name
DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.)
NPI
1306980602
Phone
(301) 897-2992
Address
5909 KINGSWOOD RD
Enumeration Date
19 February 2007
Last Update Date
8 July 2007

Doctor Profile

Medical School Name
UNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Secondary Phone
4102388025
Graduation Year
1992 (34 years ago)
PAC ID
9830363332
Group Practice PAC ID
7810888484
Professional Enrollment ID
I20111118000363
Address ID
MD212011782BA419XXSTXX466
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

406 DERMATOLOGY in MD

Provider Addresses for DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.)

  • 5909 KINGSWOOD RD

    BETHESDA, MD 208141821

    Phone: (301) 897-2992

    Fax: (301) 897-2992

    Type: Mailing

  • 10 CENTER DR

    BUILDING 10, ROOM 12N242, MSC1908

    BETHESDA, MD 208920001

    Phone: (301) 451-1926

    Fax: (301) 496-5370

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2011-11-18

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20111118000363IDermatologyMDTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 20814)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 7810888484View full group profile
NameSpecialtyState
D E R M A T O L O G YIL
D E R M A T O L O G YMD
D E R M A T O L O G YMD
D E R M A T O L O G YMD
-MD
D E R M A T O L O G YMD
Nurse PractitionerMD
D E R M A T O L O G YMD
D E R M A T O L O G YMD
Physician AssistantMD

Reviews

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Frequently asked questions

What number should I use to identify DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) for billing?
Administrative and clinical systems typically use NPI 1306980602 for DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.).
Should I treat DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) as an active provider?
Patients and plans typically see DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) as active in the national extract.
What type of care does DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) provide?
DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.)'s profile centers on Dermatology Physician. Clinical services aligned with this taxonomy classification.
What geographic area is tied to DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.)?
DR. THOMAS JOSEPH HORNYAK (M.D., PH.D.) is associated with Bethesda, Maryland in the same public data insurers reference.
Can I verify credentials using only NPI?
NPI confirms identity in the directory; licensure and board certification require separate checks.

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