Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RALPH C FELDER M.D.
NPI 1376591016
Specialist in Apache Junction, AZ

Q: What is Ralph Felder's NPI number?

The NPI number for Ralph Felder is 1376591016. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Q: What is Ralph Felder's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Ralph Felder was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 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.

Active since May 05, 2006

1840 W APACHE TRL, APACHE JUNCTION, AZ 85220(480) 889-3500(480) 889-3502 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Ralph C Felder M.d. NPPES

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

DR. RALPH C FELDER M.D. (NPI 1376591016) is an individual specialist in Apache Junction, Arizona, licensed in Arizona (15719) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1376591016

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameDR. RALPH C FELDERCredential: M.D.

Location Address1840 W APACHE TRLApache Junction, AZ 85220-3728

Mailing Address1840 W Apache TrlApache Junction, AZ 85220-3728 · (480) 889-3500 · Fax (480) 889-3502

Phone(480) 889-3500

Fax(480) 889-3502

Sole ProprietorNo

Enumeration DateMay 5, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1376591016 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in AZ · 15719

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

1840 W APACHE TRL, Apache Junction, AZ 85220

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Other Identifiers 1

Medicaid251760AZ

Other Providers at the Same Location NPPES

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

AZTECH RADIOLOGY AND OPEN MRI

Specialist

1840 W APACHE TRL
APACHE JUNCTION, AZ 85220

Pinal County (480) 288-6400

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 Ralph Felder's NPI number?

The NPI number for Ralph Felder is 1376591016. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is Ralph Felder located?

Ralph Felder practices at 1840 W Apache Trl, Apache Junction, AZ 85220. The listed phone number is (480) 889-3500.

What is Ralph Felder's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Ralph Felder was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 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.