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GERIATRIC SPECIALTIES OF ARIZONA PC
NPI 1225023377
Internal Medicine in Phoenix, AZ

Active since September 14, 2005CLIA 03D0928912 · Microscopy
6838 N 23RD AVE, PHOENIX, AZ 85015(602) 864-8800(602) 864-1448 Get Directions Write a Review

NPPES record last updated: November 3, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Geriatric Specialties Of Arizona Pc NPPES

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

GERIATRIC SPECIALTIES OF ARIZONA PC (NPI 1225023377) is a healthcare organization registered as an internal medicine in Phoenix, Arizona and active in the NPI registry since September 2005. The organization holds a CLIA Microscopy certificate valid through May 28, 2027 and lists Dianne Rodriguez, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1225023377
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameGERIATRIC SPECIALTIES OF ARIZONA PC
Location Address6838 N 23RD AVEPhoenix, AZ 85015-1056
Mailing Address6838 N 23rd AvePhoenix, AZ 85015-1056 · (602) 864-8800 · Fax (602) 864-1448
Phone(602) 864-8800
Fax(602) 864-1448
Organization SubpartNo
Authorized OfficialDianne RodriguezOffice Manager · (602) 864-8800
Enumeration DateSeptember 14, 2005
Last NPPES UpdateNovember 3, 2025
NPPES CertifiedNovember 3, 2025
✔ NPI 1225023377 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in AZ · 19651✔ Licensed in AZ · 30953✔ Licensed in AZ · 16113
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X · License 31629 (AZ)
6838 N 23RD AVE, Phoenix, AZ 85015
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Geriatric Specialties Of Arizona Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Geriatric Specialties Of Arizona PC, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 4 within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Stanley Combs, MD
Internal Medicine
NPI 1932200938
6838 N 23RD AVE
Phoenix, AZ 85015
(602) 864-8800
✔ PECOS✔ Accepts MedicareSame address
Morton Dubnow, M.D.
Internal Medicine
NPI 1659319309
6838 N 23RD AVE
Phoenix, AZ 85015
(602) 864-8800
✔ PECOS✔ Accepts MedicareSame address
Kenneth Levy, MD
Internal Medicine
NPI 1174712806
6838 23RD AVE
Phoenix, AZ 85015
(602) 864-8800
✔ PECOS✔ Accepts MedicareSame address
Rocio Calderon, FNP
Nurse Practitioner
NPI 1730827262
3330 N 2ND ST
Phoenix, AZ 85012
(602) 631-4090
✔ PECOS✔ Accepts Medicare4.1 mi
Yajaira Acosta, FNP
Nurse Practitioner
NPI 1811754153
10613 W OLIVE AVE STE 200
Peoria, AZ 85345
(480) 677-8282
✔ PECOS✔ Accepts Medicare11 mi
Julia Rodarte, FNP-C
Nurse Practitioner
NPI 1780174904
17063 W GREENWAY RD
Surprise, AZ 85388
(480) 677-8282
✔ PECOS✔ Accepts Medicare19 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 03D0928912

Geriatric Specialties Of Arizona PC · Phoenix, AZ
Active · expires May 28, 2027
CLIA Number03D0928912
Laboratory TypePhysician Office
Certificate Effective DateMay 29, 2025
Certificate Expiration DateMay 28, 2027
Laboratory DirectorKenneth I. Levy MD
Laboratory Phone(602) 864-8800
Laboratory LocationGeriatric Specialties Of Arizona PC6838 N 23rd Ave, Phoenix, AZ 85015
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Geriatric Specialties Of Arizona PC's NPI number?

The NPI number for Geriatric Specialties Of Arizona PC is 1225023377. It was assigned to this organization in the NPPES registry on September 14, 2005.

Where is Geriatric Specialties Of Arizona PC located?

Geriatric Specialties Of Arizona PC is located at 6838 N 23rd Ave, Phoenix, AZ 85015. The listed phone number is (602) 864-8800.

What is Geriatric Specialties Of Arizona PC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Geriatric Specialties Of Arizona PC enrolled in Medicare?

Yes. Geriatric Specialties Of Arizona PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Geriatric Specialties Of Arizona PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Geriatric Specialties Of Arizona PC. A 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 the clinician's services. The largest specialties are Internal Medicine (3) and Nurse Practitioner (3). Of these, 3 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Geriatric Specialties Of Arizona PC hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 03D0928912) is associated with this NPI, valid through May 28, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Geriatric Specialties Of Arizona PC accept?

Health plans from Ambetter Health and Ambetter from Arizona Complete Health list Geriatric Specialties Of Arizona PC 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 Geriatric Specialties Of Arizona PC was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.