Arnold Block, P.HD
NPI 1508913542 · Clinical Child & Adolescent Psychologist · Columbia, MD
Arnold Block, P.HD is a Clinical Child & Adolescent Psychologist provider in Columbia, MD (NPI 1508913542).
Provider details
- NPI number
- 1508913542
- Entity type
- Individual
- Primary specialty
- Clinical Child & Adolescent PsychologistBehavioral Health & Social Service Providers
- Credential
- P.HD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 01550 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2007-01-04
- Last updated
- 2007-07-08
Frequently asked questions
- What is Arnold Block's NPI number?
- Arnold Block's National Provider Identifier (NPI) is 1508913542, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arnold Block's specialty?
- Arnold Block is listed in the NPPES registry with a primary specialty of Clinical Child & Adolescent Psychologist (Behavioral Health & Social Service Providers).
- Where is Arnold Block located?
- Arnold Block's practice location on file with NPPES is 5770 Sterrett Place, Columbia, MD 21044.
- What is Arnold Block's phone number?
- The practice phone number listed in the NPPES registry for Arnold Block is (410) 227-7757.
- Is Arnold Block's NPI active?
- Yes — Arnold Block's NPI (1508913542) 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.