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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CHARISSA ZIMA
NPI 1831987965
Nurse Practitioner - Gerontology in Redlands, CA

Active since April 29, 2025PECOS EnrolledAccepts Medicare Assignment
1895 ORANGE TREE LN STE 102, REDLANDS, CA 92374(909) 558-7884 Get Directions Write a Review

NPPES record last updated: October 11, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 11, 2026, Jun 4, 2026 (2 updates tracked since 2026).

About Charissa Zima NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHARISSA ZIMA (NPI 1831987965) is an individual gerontology provider in Redlands, California, licensed in California (95029980) and active in the NPI registry since April 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1831987965
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameCHARISSA ZIMA
Location Address1895 ORANGE TREE LN STE 102Redlands, CA 92374-0112
Mailing Address11234 Anderson St Rm 2586aLoma Linda, CA 92350-1716 · (909) 558-7884
Phone(909) 558-7884
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateApril 29, 2025
Last NPPES UpdateOctober 11, 20262 updates tracked since enumeration
NPPES CertifiedOctober 11, 2026
✔ NPI 1831987965 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in CA · 95029980
1895 ORANGE TREE LN STE 102, Redlands, CA 92374
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Charissa Zima is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9931628872
PECOS Enrollment IDI20250523001171
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Charissa Zima reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Gastro Health Inc
Same address
Medical Specialty
1895 ORANGE TREE LN STE 102
Redlands, CA 92374
  • Reassigned Medicare billing, California enrollment
  • 7 clinicians in this Medicare group
NPI 1821601840 (909) 558-2600
Faculty Physicians And Surgeons Of Llusm
Same address
Otolaryngology
1895 ORANGE TREE LN STE 102
Redlands, CA 92374
  • Reassigned Medicare billing, California enrollment
  • 2,584 clinicians in this Medicare group
NPI 1376795369 (909) 558-2824

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92374 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$91.88 typical visit price
range $59.60 – $179.42
Typical copayment $22.97 (range $14.90 – $44.85)
Most-billed visit code 99203
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. BRIANNA KATHLEEN CRAWLEY M.D.
Otolaryngology
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-2824
CHRISTINA LIEM MS, CCC-SLP
Speech-Language Pathologist
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-2824
FACULTY PHYSICIANS AND SURGEONS OF LLUSM
Otolaryngology
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-2824
JILL ANNE TUBBS NURSE PRACTITIONER
Nurse Practitioner (Family)
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-2824
DEBORAH L. HICKS SLP
Speech-Language Pathologist
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-2824
KRISTI HUYNH
Speech-Language Pathologist
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-2325
DR. PRIYA DARSHINI KRISHNA MD
Specialist
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-2600
LOMA LINDA UNIVERISTY RADIOLOGY MEDICAL GROUP, INC.
Radiology (Diagnostic Radiology)
1895 ORANGE TREE LN STE 102
REDLANDS, CA 92374
San Bernardino County (909) 558-3012

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Charissa Zima's NPI number?

The NPI number for Charissa Zima is 1831987965. It was assigned to this individual provider in the NPPES registry on April 29, 2025.

Where is Charissa Zima located?

Charissa Zima practices at 1895 Orange Tree Ln Ste 102, Redlands, CA 92374. The listed phone number is (909) 558-7884.

What is Charissa Zima's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.

Is Charissa Zima enrolled in Medicare?

Yes. Charissa Zima is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Charissa Zima's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Charissa Zima reassigns Medicare benefits to 2 organizations: Gastro Health Inc (Redlands, CA) and Faculty Physicians And Surgeons Of Llusm (Redlands, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Charissa Zima's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Charissa Zima was last updated on October 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.