IndividualActive
O'Neal Walker
NPI 1336419563 · Clinical Psychologist · Rockville, MD
O'Neal Walker is a Clinical Psychologist provider in Rockville, MD (NPI 1336419563).
Provider details
- NPI number
- 1336419563
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 04000 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(80/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
6237 Executive Blvd
Rockville, MD 20852-3906
Phone: (240) 426-5859
Fax: (301) 972-1318
Street-level locationGet directions
Mailing address
Cmr 402 Box 16
Apo, AE 09180-1001
Registry dates
- Enumerated
- 2012-01-04
- Last updated
- 2025-02-13
- Certified
- 2025-02-13
Frequently asked questions
- What is O'Neal Walker's NPI number?
- O'Neal Walker's National Provider Identifier (NPI) is 1336419563, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is O'Neal Walker's specialty?
- O'Neal Walker is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is O'Neal Walker located?
- O'Neal Walker's practice location on file with NPPES is 6237 Executive Blvd, Rockville, MD 20852-3906.
- What is O'Neal Walker's phone number?
- The practice phone number listed in the NPPES registry for O'Neal Walker is (240) 426-5859.
- Is O'Neal Walker's NPI active?
- Yes — O'Neal Walker's NPI (1336419563) is active in the NPPES registry as of the last update on 2025-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.