Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Physician Assistant

Jennifer K. Guerra

Sees patients in Claremont, CA · Pomona, CA · Chino Hills, CA … · California

Summary

Jennifer K. Guerra is a physician assistant at 1601 Monte Vista Ave, Suite 190, Claremont, CA 91711. Phone: (909) 865-9977. May accept Medicare assignment. In 2024, Jennifer K. Guerra had 31 Original Medicare patients and 54 services. NPI 1831425875. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Physician assistant
  • Address: 1601 Monte Vista Ave, Suite 190, Claremont, CA 91711 · Directions (3 more locations)
  • Phone: (909) 865‑9977
  • Medicare: May accept Medicare assignment
  • Group practice: Premier Family Medicine Associates, Inc
  • School: Western University Of Health Sciences College Of Dental Med · graduated 2009
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Jennifer K. Guerra, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Jennifer K. Guerra accept Medicare assignment?
Medicare's clinician data says Jennifer K. Guerra may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Jennifer K. Guerra see?
In 2024, CMS data shows 31 Original Medicare patients and 54 services for Jennifer K. Guerra. This counts Original Medicare only and measures volume, not quality.
What is Jennifer K. Guerra's NPI number?
1831425875. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Jennifer K. Guerra, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients31
Services billed to Medicare54
Different services or procedures17
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)14 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure71%
  • Arthritis61%
  • Diabetes39%

Practice locations

Addresses where Jennifer K. Guerra is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jennifer K. Guerra as a member of this group (CMS data updated October 2, 2026).

  • Premier Family Medicine Associates, Inc65 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, California →

Other physician assistants in Claremont

Clinicians with the same Medicare primary specialty in Claremont, CA — not a recommendation.

All physician assistants in Claremont →

Other clinicians in Premier Family Medicine Associates, Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

SchoolWestern University Of Health Sciences College Of Dental Med
Graduation year2009
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1831425875
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians