DIANA M GIRNITA MD PC
NPI 1154995017
Internal Medicine - Rheumatology in Irvine, CA

Q: What is Diana M Girnita MD PC's NPI number?

The NPI number for Diana M Girnita MD PC is 1154995017. It was assigned to this organization in the NPPES registry on May 16, 2021. The provider is doing business as Rheumatologist OnCall.

Q: What is Diana M Girnita MD PC's specialty?

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

Active since May 16, 2021

614 CULTIVATE, IRVINE, CA 92618(650) 525-4404(650) 263-7265 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, Jun 7, 2021, May 16, 2021 (3 updates tracked since 2021).

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About Diana M Girnita Md Pc NPPES

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

DIANA M GIRNITA MD PC (NPI 1154995017), doing business as Rheumatologist Oncall, is a healthcare organization registered as a rheumatology in Irvine, California and active in the NPI registry since May 2021. The organization lists Diana M Girnita, Founder, Ceo, as its authorized official.

NPPES Registry Identity

NPI1154995017

Entity TypeOrganization

Primary Taxonomy207RR0500X

Legal Business NameDIANA M GIRNITA MD PC

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) 263-7265

Organization SubpartNo

Authorized OfficialDiana M GirnitaFounder, Ceo · (513) 917-9090

Enumeration DateMay 16, 2021

Last NPPES UpdateJanuary 16, 20263 updates tracked since enumeration

NPPES CertifiedJanuary 16, 2026

✔ NPI 1154995017 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

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.

614 CULTIVATE, Irvine, CA 92618

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Other Names 1

Doing Business AsRheumatologist Oncall

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES

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

DR. DIANA M GIRNITA MD, PHD

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 M Girnita MD PC's NPI number?

The NPI number for Diana M Girnita MD PC is 1154995017. It was assigned to this organization in the NPPES registry on May 16, 2021. The provider is doing business as Rheumatologist OnCall.

Where is Diana M Girnita MD PC located?

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

What is Diana M Girnita MD PC's specialty?

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

When was this NPI record last updated?

The NPPES record for Diana M Girnita MD PC 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.