IndividualActive
Thomas Ball, PH D
NPI 1225042625 · Psychologist · Diamond Bar, CA
Thomas Ball, PH D is a Psychologist provider in Diamond Bar, CA (NPI 1225042625).
Provider details
- NPI number
- 1225042625
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH D
- Sex
- Male
- Sole proprietor
- No
- License
- PSY2465 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(91/100 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
1200 South Diamond Bar Blvd
Suite 207
Diamond Bar, CA 91765-2506
Phone: (909) 860-1237
Fax: (909) 860-8467
Street-level locationGet directions
Mailing address
1637 Butternut Way
Diamond Bar, CA 91765-2506
Registry dates
- Enumerated
- 2006-07-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Thomas Ball's NPI number?
- Thomas Ball's National Provider Identifier (NPI) is 1225042625, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Ball's specialty?
- Thomas Ball is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Thomas Ball located?
- Thomas Ball's practice location on file with NPPES is 1200 South Diamond Bar Blvd, Diamond Bar, CA 91765-2506.
- What is Thomas Ball's phone number?
- The practice phone number listed in the NPPES registry for Thomas Ball is (909) 860-1237.
- Is Thomas Ball's NPI active?
- Yes — Thomas Ball's NPI (1225042625) 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.