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

I. Robert Horowitz, MD, PA

Organization Dermatology Physician · NPI 1700116803

I. Robert Horowitz, MD, PA is a Dermatology Physician in Rockville, Maryland. Registered with an NPI since 2010.

In the registry since
2010
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.

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

Record details

NPI number1700116803
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Irvin Horowitz — President · (301) 468-9090
NPI enumeratedJanuary 12, 2010
Last updated in NPPESJanuary 12, 2010
Mailing address121 Congressional Ln, Suite 416, Rockville, MD 20852-1542

Other providers in Rockville