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Irvin Horowitz, MD
NPI 1376647537 · Dermatology Physician · Rockville, MD
Irvin Horowitz, MD is a Dermatology Physician provider in Rockville, MD (NPI 1376647537).
Provider details
- NPI number
- 1376647537
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0015098 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
121 Congressional Lane
Suite 416
Rockville, MD 20852-1542
Phone: (301) 468-9090
Fax: (301) 468-1420
Street-level locationGet directions
Mailing address
11505 Le Havre Drive
Potomac, MD 20854-3119
Registry dates
- Enumerated
- 2006-09-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Irvin Horowitz's NPI number?
- Irvin Horowitz's National Provider Identifier (NPI) is 1376647537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irvin Horowitz's specialty?
- Irvin Horowitz is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Irvin Horowitz located?
- Irvin Horowitz's practice location on file with NPPES is 121 Congressional Lane, Rockville, MD 20852-1542.
- What is Irvin Horowitz's phone number?
- The practice phone number listed in the NPPES registry for Irvin Horowitz is (301) 468-9090.
- Is Irvin Horowitz's NPI active?
- Yes — Irvin Horowitz's NPI (1376647537) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.