IndividualActive
Diane Koslow, PH.D.
NPI 1851500391 · Psychologist · Rockville, MD
Diane Koslow, PH.D. is a Psychologist provider in Rockville, MD (NPI 1851500391).
Provider details
- NPI number
- 1851500391
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 02135 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 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
6201 Executive Blvd
Rockville, MD 20852-3906
Phone: (301) 770-2847
Street-level locationGet directions
Mailing address
5206 Massachusetts Ave
Bethesda, MD 20816-2703
Registry dates
- Enumerated
- 2007-05-22
- Last updated
- 2007-07-11
Frequently asked questions
- What is Diane Koslow's NPI number?
- Diane Koslow's National Provider Identifier (NPI) is 1851500391, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Koslow's specialty?
- Diane Koslow is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Diane Koslow located?
- Diane Koslow's practice location on file with NPPES is 6201 Executive Blvd, Rockville, MD 20852-3906.
- What is Diane Koslow's phone number?
- The practice phone number listed in the NPPES registry for Diane Koslow is (301) 770-2847.
- Is Diane Koslow's NPI active?
- Yes — Diane Koslow's NPI (1851500391) is active in the NPPES registry as of the last update on 2007-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.