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

Irvin Robert Horowitz, MD

Individual provider Dermatology Physician · NPI 1376647537

Irvin Robert Horowitz, MD is a Dermatology Physician in Rockville, Maryland. Licensed in Maryland. Registered with an NPI since 2006.

Licensed in
MD
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

121 Congressional Ln Ste 416
Rockville, MD 20852-1542
Phone: (301) 468-9090
Fax: (301) 468-1420
Show map & directions

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

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence D0015098 (MD)

Record details

NPI number1376647537
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 11, 2006
Last updated in NPPESJuly 8, 2007

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