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DR. DIANA M GIRNITA MD, PHD
NPI 1922378116
Internal Medicine - Rheumatology in Irvine, CA

Active since January 05, 2012PECOS Enrolled
614 CULTIVATE, IRVINE, CA 92618(650) 525-4404(650) 582-2895 Get Directions Write a Review

NPPES record last updated: January 16, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Jan 16, 2026, May 15, 2021, Dec 24, 2020 and 2 more (5 updates tracked since 2016).

About Dr. Diana M Girnita Md, Phd NPPES

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

DR. DIANA M GIRNITA MD, PHD (NPI 1922378116) is an individual rheumatology provider in Irvine, California, licensed in California (A167653) and active in the NPI registry since January 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922378116
Entity TypeIndividualFemale
Primary Taxonomy207RR0500X
Provider Legal NameDR. DIANA M GIRNITACredential: MD, PHD
Location Address614 CULTIVATEIrvine, CA 92618-1357
Mailing Address614 CultivateIrvine, CA 92618-1357 · (650) 525-4404 · Fax (650) 582-2895
Phone(650) 525-4404
Fax(650) 582-2895
Sole ProprietorNo
Enumeration DateJanuary 5, 2012
Last NPPES UpdateJanuary 16, 20265 updates tracked since enumeration
NPPES CertifiedJanuary 16, 2026
✔ NPI 1922378116 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
Licenses✔ Licensed in CA · A167653✔ Licensed in OH · 35.122228
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
Also ListedInternal MedicineTaxonomy 207R00000X · License 35.122228 (OH)
614 CULTIVATE, Irvine, CA 92618
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource, Oscar Health Insurance.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Diana M Girnita Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92618 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
3%106 patients1/55-star benchmark: 100%
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
70%71 patients3/55-star benchmark: 100%
Pneumococcal Vaccination Status for Older Adults
Percentage of patients 65 years of age and older who have ever received a pneumococcal vaccine
68%106 patients3/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES

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

DIANA M GIRNITA MD PC
Internal Medicine (Rheumatology)
614 CULTIVATE
IRVINE, CA 92618
Orange County (650) 525-4404

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 Diana Girnita's NPI number?

The NPI number for Diana Girnita is 1922378116. It was assigned to this individual provider in the NPPES registry on January 5, 2012.

Where is Diana Girnita located?

Diana Girnita practices at 614 Cultivate, Irvine, CA 92618. The listed phone number is (650) 525-4404.

What is Diana Girnita's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Diana Girnita enrolled in Medicare?

Yes. Diana Girnita is registered in the Medicare PECOS enrollment system.

What insurance does Diana Girnita accept?

Health plans from CareSource and Oscar Health Insurance list Diana Girnita as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Diana Girnita was last updated on January 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.