Thomas Kleyn, PHARM.D.
NPI 1790196855 · Pharmacotherapy Pharmacist · Pomona, CA
Thomas Kleyn, PHARM.D. is a Pharmacotherapy Pharmacist provider in Pomona, CA (NPI 1790196855).
Provider details
- NPI number
- 1790196855
- Entity type
- Individual
- Primary specialty
- Pharmacotherapy PharmacistPharmacy Service Providers
- Credential
- PHARM.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 67340 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
- 2014-05-12
- Last updated
- 2014-05-12
Frequently asked questions
- What is Thomas Kleyn's NPI number?
- Thomas Kleyn's National Provider Identifier (NPI) is 1790196855, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Kleyn's specialty?
- Thomas Kleyn is listed in the NPPES registry with a primary specialty of Pharmacotherapy Pharmacist (Pharmacy Service Providers).
- Where is Thomas Kleyn located?
- Thomas Kleyn's practice location on file with NPPES is 309 E 2nd St, Pomona, CA 91766-1854.
- What is Thomas Kleyn's phone number?
- The practice phone number listed in the NPPES registry for Thomas Kleyn is (909) 469-8638.
- Is Thomas Kleyn's NPI active?
- Yes — Thomas Kleyn's NPI (1790196855) is active in the NPPES registry as of the last update on 2014-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.