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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.

DR. TAMMY SHIRLEY RUTH MD, MED
NPI 1871833681
Pediatrics - Pediatric Cardiology in Phoenix, AZ

Active since February 15, 2013PECOS Enrolled
1919 E THOMAS RD, PHOENIX, AZ 85016(602) 933-3366(602) 933-4264 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 23, 2026, Jul 30, 2026, Dec 27, 2025 and 4 more (7 updates tracked since 2021).

About Dr. Tammy Shirley Ruth Md, Med NPPES

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

DR. TAMMY SHIRLEY RUTH MD, MED (NPI 1871833681) is an individual pediatric cardiology provider in Phoenix, Arizona, licensed in Arizona (79999) and active in the NPI registry since February 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1871833681
Entity TypeIndividualFemale
Primary Taxonomy2080P0202X
Provider Legal NameDR. TAMMY SHIRLEY RUTHCredential: MD, MED
Location Address1919 E THOMAS RDPhoenix, AZ 85016-7710
Mailing Address2108 E Thomas RdPhoenix, AZ 85016-7761 · (602) 933-3124
Phone(602) 933-3366
Fax(602) 933-4264
Sole ProprietorNo
Enumeration DateFebruary 15, 2013
Last NPPES UpdateSeptember 23, 20267 updates tracked since enumeration
NPPES CertifiedSeptember 23, 2026
✔ NPI 1871833681 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyPediatrics · Pediatric CardiologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0202X
Licenses✔ Licensed in AZ · 79999✔ Licensed in TN · 73306
Definition
A pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels, and the clinical evaluation of cardiovascular disease.
Also ListedPediatricsTaxonomy 208000000X · License MD61172297 (WA)
Also ListedPediatrics · Neonatal-Perinatal MedicineTaxonomy 2080N0001X · License MD61172297 (WA)
Also ListedHospitalistTaxonomy 208M00000X · License MD61172297 (WA)
1919 E THOMAS RD, Phoenix, AZ 85016
Open in Google Maps ↗

Other Identifiers 1

Medicaid216427AZ

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Tammy Shirley Ruth Md, Med 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.

Medicare Billing Reassignment

Medicare enrollment records show Tammy Ruth reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Vanderbilt University Medical Center
1,442 mi
Internal Medicine
1301 22ND AVE S
Nashville, TN 37232
  • Reassigned Medicare billing, Tennessee enrollment
  • 4,711 clinicians in this Medicare group
NPI 1104202761 (615) 936-2000

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

Other Providers at the Same Location NPPES 20

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

DR. TIMUR RAGHIB M.D.
Hospitalist
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0777
MRS. MARIA T ESCOBAR CSP, RD
Dietitian, Registered
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (480) 440-2787
DR. AHMAR HUSAIN MD
Anesthesiology (Pediatric Anesthesiology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-4660
MRS. SOLEE R COWLEY LCSW
Social Worker (Clinical)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0414
MR. SEAN PATRICK BRADY DO
Anesthesiology (Pediatric Anesthesiology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-4660
PRIYA PRASHER M.D.
Pediatrics
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-1900
DR. AMIT RAJARAM D.O.
Pediatrics
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-0198
LAURA GARDNER HAMANT
Pediatrics (Pediatric Gastroenterology)
1919 E THOMAS RD
PHOENIX, AZ 85016
Maricopa County (602) 933-1000

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 Tammy Ruth's NPI number?

The NPI number for Tammy Ruth is 1871833681. It was assigned to this individual provider in the NPPES registry on February 15, 2013.

Where is Tammy Ruth located?

Tammy Ruth practices at 1919 E Thomas Rd, Phoenix, AZ 85016. The listed phone number is (602) 933-3366.

What is Tammy Ruth's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.

Is Tammy Ruth enrolled in Medicare?

Yes. Tammy Ruth is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tammy Ruth's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tammy Ruth reassigns Medicare benefits to Vanderbilt University Medical Center (Nashville, TN). The 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 Tammy Ruth'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 Tammy Ruth was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 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.