What is James Williams's NPI number?

James Williams's National Provider Identifier (NPI) is 1033565940, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is James Williams's specialty?

James Williams is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).

Where is James Williams located?

James Williams's practice location on file with NPPES is 5525 Grossmont Center Dr, La Mesa, CA 91942-3009.

What is James Williams's phone number?

The practice phone number listed in the NPPES registry for James Williams is (619) 644-6650.

Is James Williams's NPI active?

Yes — James Williams's NPI (1033565940) is active in the NPPES registry as of the last update on 2016-05-10.

IndividualActive

James Williams, RPH

NPI 1033565940 · Pharmacist · La Mesa, CA

James Williams, RPH is a Pharmacist provider in La Mesa, CA (NPI 1033565940).

Provider details

NPI number: 1033565940
Entity type: Individual
Primary specialty: PharmacistPharmacy Service Providers
Credential: RPH
Sex: Male
Sole proprietor: No
License: 43116 (CA)

Practice location

5525 Grossmont Center Dr

La Mesa, CA 91942-3009

Phone: (619) 644-6650

Fax: (619) 644-1205

Street-level locationGet directions

More CA providers

Mailing address

5525 Grossmont Center Dr

La Mesa, CA 91942-3009

Specialties & taxonomies

PharmacistPrimary183500000XLicense 43116 (CA)
Pharmacy Service Providers

Profile Score

Established profile(73/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
10 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.

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.

Drug	Part D claims (2024)	Beneficiaries
Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G	16	16

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2016-05-10
Last updated: 2016-05-10

Frequently asked questions

What is James Williams's NPI number?: James Williams's National Provider Identifier (NPI) is 1033565940, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is James Williams's specialty?: James Williams is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
Where is James Williams located?: James Williams's practice location on file with NPPES is 5525 Grossmont Center Dr, La Mesa, CA 91942-3009.
What is James Williams's phone number?: The practice phone number listed in the NPPES registry for James Williams is (619) 644-6650.
Is James Williams's NPI active?: Yes — James Williams's NPI (1033565940) is active in the NPPES registry as of the last update on 2016-05-10.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)