Guy Diamond, PH.D.
NPI 1801902630 · Clinical Psychologist · Philadelphia, PA
Guy Diamond, PH.D. is a Clinical Psychologist provider in Philadelphia, PA (NPI 1801902630).
Provider details
- NPI number
- 1801902630
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- PS007435L (PA)
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
- 2006-08-22
- Last updated
- 2012-09-04
Frequently asked questions
- What is Guy Diamond's NPI number?
- Guy Diamond's National Provider Identifier (NPI) is 1801902630, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guy Diamond's specialty?
- Guy Diamond is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Guy Diamond located?
- Guy Diamond's practice location on file with NPPES is 3440 Market St, Philadelphia, PA 19104-3325.
- What is Guy Diamond's phone number?
- The practice phone number listed in the NPPES registry for Guy Diamond is (215) 590-7555.
- Is Guy Diamond's NPI active?
- Yes — Guy Diamond's NPI (1801902630) is active in the NPPES registry as of the last update on 2012-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.