NPPES file of Aug 9, 2026

Thomas John Karlowicz, R.PH.

Pharmacist · Riverside, CA

Thomas John Karlowicz, R.PH. is a pharmacist with a practice address in Riverside, California, and NPI 1962585737, issued on Oct 23, 2006. Check the license (California 35042, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1962585737
Name
Thomas John Karlowicz
Credential
R.PH.
Primary taxonomy
Pharmacist 183500000X
License number
35042 CA
Self-reported in NPPES; status is on the state search
Practice location
10800 Magnolia Ave, Riverside, CA 92505
Phone
(951) 353-3675
Enumerated
Oct 23, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest pharmacist records → All 32,533 in California → Look up another NPI →

Also registered at 10800 Magnolia Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joseph Abapo, MDPediatrics Physician1841348786
  2. Hussein Abdulrassoul, MDOrthopaedic Surgery Physician1972123891
  3. Kimberly Adams, PA-CMedical Physician Assistant1053522870
  4. Alfredo Aguiar, PAPhysician Assistant1043368970
  5. Michael Aguinaldo, M.D.Pediatrics Physician1851531487
  6. Maria Aguirre, MDPediatrics Physician1295806255

Verify Thomas John Karlowicz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 35042    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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Thomas John Karlowicz among 32,533 pharmacist records in California

Thomas John Karlowicz, R.PH. is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 94% newer
  • In a Medicare fileNo · 15% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 76% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

330 pharmacist records list a practice address in Riverside

They are 330 of the 13,893 NPPES records with a practice address in Riverside, and 32,533 pharmacist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 32,533 in California → Every provider in Riverside → Pharmacist nationwide →

The 8 pharmacist records with the nearest ZIP codes

  1. Jennifer Baybay, PHARMDRiverside, CA 925051366527129
  2. David Cheng, PHARM.D.Riverside, CA 925051174617864
  3. Ricky Chui, PHARM.DRiverside, CA 925051295836740
  4. Andrew Jannett, PHARM.D.Riverside, CA 925051205937299
  5. Hoang Le, PHARM.D.Riverside, CA 925051396820817
  6. Brigitte Nguyen, PHARM.D.Riverside, CA 925051790864791
  7. Kenneth OhRiverside, CA 925051750466207
  8. Nancy Pyo, R.PH.Riverside, CA 925051770662702

Common questions

What is Thomas John Karlowicz, R.PH.'s NPI number?

Thomas John Karlowicz, R.PH.'s National Provider Identifier (NPI) is 1962585737, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Thomas John Karlowicz, R.PH. located?

The NPPES record lists a practice address at 10800 Magnolia Ave, Riverside, CA, 92505. Phone: (951) 353-3675. Providers update this record themselves, so call before visiting.

How can I verify Thomas John Karlowicz, R.PH.'s license?

NPPES lists California license number 35042, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.