Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Jessica Lynn Willemse, NP-C

Individual provider Family Nurse Practitioner · NPI 1831594670

Jessica Lynn Willemse, NP-C is a Nurse Practitioner in Yucaipa, California. Graduated from Loma Linda University School of Medicine in 2014, 12 years ago. Practices with Sac Health System, a 220-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
12
Trained at
Loma Linda University School of Medicine
Licensed in
CA
In the registry since
2014
What do these letters mean?
NP-C — Nurse Practitioner, Certified
A nurse practitioner certified by the AANP.

See every abbreviation used in this directory →

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Practice location Address checks out

34845 Yucaipa Blvd
Yucaipa, CA 92399-4268 Not confirmed with CMS for 11 years — call before visiting
Phone: (909) 500-7971
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 95001558 (CA)

Record details

NPI number1831594670
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP-C
Sole proprietorNo
NPI enumeratedOctober 22, 2014
Last updated in NPPESSeptember 25, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolLOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Sac Health System — 220 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients37
Services billed 117 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Sac Health System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 220 clinicians in the practice; 12 are shown here.

Other providers in Yucaipa