NPPES file of Aug 9, 2026

Jeslin Guzman

Family Medicine Physician · Pomona, CA

Jeslin Guzman is a family medicine physician with a practice address in Pomona, California, and NPI 1811530025, issued on Oct 21, 2019. Check the license (California 57250, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1811530025
Name
Jeslin Guzman
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
57250 CA
Self-reported in NPPES; status is on the state search
Practice location
1920 N Garey Ave, Pomona, CA 91767
Phone
(909) 622-1235
Enumerated
Oct 21, 2019
Record last updated
Feb 1, 2022
Medicare enrollment
Enrolled (PECOS I20220307000951); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1920 N Garey Ave

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

  1. Emma ElsasserPhysician Assistant1942812029
  2. Narsis Golkarieh, MDPediatrics Physician1598865388
  3. Brijesh PatelFamily Nurse Practitioner1760920797
  4. Sapna Patel, M.D.Pediatrics Physician1790973204
  5. Paulette WileyAddiction (Substance Use Disorder) Counselor1063684173
  6. Ivy Yin, NPFamily Nurse Practitioner1053185769

Verify Jeslin Guzman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 57250
    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
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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65% fewer Medicare Part D claims than the average family medicine physician in 2024

1,233 Medicare Part D claims for 695 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 11 claims were for opioids.

  1. Jeslin Guzman1,233
  2. Specialty average3,544

Most prescribed

  1. Amlodipine Besylate242 claims
  2. Losartan Potassium92 claims
  3. Lisinopril82 claims
  4. Cephalexin61 claims
  5. Hydrochlorothiazide48 claims
  6. Cefadroxil41 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupSan Dimas, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jeslin Guzman among 17,133 family medicine physician records in California

Jeslin Guzman is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.

  • NPI issued2019 · 85% of these records are older, 12% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2019 · median 2005 among the 10,652 with a school on file
  • Record last updated2022 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

78 family medicine physician records list a practice address in Pomona

They are 78 of the 5,102 NPPES records with a practice address in Pomona, and 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Snezana Begovic, MDPomona, CA 917671033135736
  2. Douglas Chiriboga, MDPomona, CA 917671225038342
  3. April Ford, MDPomona, CA 917671023045283
  4. Jaime Gonzalez, M.D.Pomona, CA 917671235180563
  5. Roger Hall, DOPomona, CA 917671336118579
  6. Sudathi Jeereddi, MDPomona, CA 917671609844984
  7. Randy Karu, M.D.Pomona, CA 917671386645760
  8. Keith Kusunis, MDPomona, CA 917671033110945

Common questions

What is Jeslin Guzman's NPI number?

Jeslin Guzman's National Provider Identifier (NPI) is 1811530025, issued on Oct 21, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Jeslin Guzman located?

The NPPES record lists a practice address at 1920 N Garey Ave, Pomona, CA, 91767. Phone: (909) 622-1235. Providers update this record themselves, so call before visiting.

How can I verify Jeslin Guzman's license?

NPPES lists California license number 57250, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Jeslin Guzman prescribe under Medicare Part D?

In 2024, Jeslin Guzman had 1,233 Medicare Part D claims for 695 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

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.