IndividualActive
Arthur Ritmeester, PH.D.
NPI 1598553216 · Psychologist · Pomona, CA
Arthur Ritmeester, PH.D. is a Psychologist provider in Pomona, CA (NPI 1598553216).
Provider details
- NPI number
- 1598553216
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- PSY29413 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(55/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
3801 W Temple Ave Bldg 66-116
Pomona, CA 91768-2557
Phone: (909) 869-3220
Street-level locationGet directions
Mailing address
3801 W Temple Ave Bldg 66-116
Pomona, CA 91768-2557
Registry dates
- Enumerated
- 2025-04-30
- Last updated
- 2025-04-30
- Certified
- 2025-04-30
Frequently asked questions
- What is Arthur Ritmeester's NPI number?
- Arthur Ritmeester's National Provider Identifier (NPI) is 1598553216, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arthur Ritmeester's specialty?
- Arthur Ritmeester is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Arthur Ritmeester located?
- Arthur Ritmeester's practice location on file with NPPES is 3801 W Temple Ave Bldg 66-116, Pomona, CA 91768-2557.
- What is Arthur Ritmeester's phone number?
- The practice phone number listed in the NPPES registry for Arthur Ritmeester is (909) 869-3220.
- Is Arthur Ritmeester's NPI active?
- Yes — Arthur Ritmeester's NPI (1598553216) is active in the NPPES registry as of the last update on 2025-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.