DR. NANCY L GREER MD
NPI 1639158363
Pediatrics in Phoenix, AZ

Q: What is Nancy Greer's NPI number?

The NPI number for Nancy Greer is 1639158363. It was assigned to this individual provider in the NPPES registry on January 11, 2006.

Q: What is Nancy Greer's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for Nancy Greer was last updated on April 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 11, 2006

20040 N 19TH AVE STE C, PHOENIX, AZ 85027(623) 869-8948 Get Directions Write a Review

NPPES record last updated: April 10, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Nancy L Greer Md NPPES

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

DR. NANCY L GREER MD (NPI 1639158363) is an individual pediatrics provider in Phoenix, Arizona, licensed in Arizona (66843) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1639158363

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. NANCY L GREERCredential: MD

Location Address20040 N 19TH AVE STE CPhoenix, AZ 85027-4256

Mailing Address20040 N 19th Ave Ste CPhoenix, AZ 85027-4256 · (623) 869-8948

Phone(623) 869-8948

Sole ProprietorYes

Enumeration DateJanuary 11, 2006

Last NPPES UpdateApril 10, 2026

NPPES CertifiedApril 10, 2026

✔ NPI 1639158363 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in AZ · 66843

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

20040 N 19TH AVE STE C, Phoenix, AZ 85027

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Other Identifiers 1

Medicaid218431AZ

Other Providers at the Same Location NPPES

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

TWIN PEDIATRICS, P.C.

Pediatrics

20040 N 19TH AVE STE C
PHOENIX, AZ 85027

Maricopa County (623) 869-8948

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 Nancy Greer's NPI number?

The NPI number for Nancy Greer is 1639158363. It was assigned to this individual provider in the NPPES registry on January 11, 2006.

Where is Nancy Greer located?

Nancy Greer practices at 20040 N 19th Ave Ste C, Phoenix, AZ 85027. The listed phone number is (623) 869-8948.

What is Nancy Greer's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for Nancy Greer was last updated on April 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.