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

Q: 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.

Q: What is Diana Girnita's specialty?

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

Q: Is Diana Girnita enrolled in Medicare?

No. Diana Girnita has opted out of Medicare through September 26, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: 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 6 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.

Active since January 05, 2012Opted out of Medicare · through Sep 26, 2026

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: August 09, 2026.

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

On this page

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 has opted out of Medicare through September 26, 2026 and remains eligible to order and refer.

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

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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

ⓘ

Opted out of Medicare

Dr. Diana M Girnita Md, Phd has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from September 26, 2022 through September 26, 2026.

Opt-Out Effective DateSeptember 26, 2022

Opt-Out In Effect ThroughSeptember 26, 2026Opt-out affidavits renew automatically every two years unless cancelled

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

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?

No. Diana Girnita has opted out of Medicare through September 26, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

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 6 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.