Dr. Ralph C Felder, M.D.
Dr. Ralph C Felder is a Specialist provider (Specialist) practicing in Apache Junction, AZ, registered in the NPPES registry with NPI 1376591016 since 2006. The credential MD stands for Doctor of Medicine. Practices at Aztech Radiology and Open Mri (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1376591016 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Ralph C Felder |
| Credential | M.D. |
| Sex | Male |
| Practice address | 1840 W APACHE TRL, Apache Junction, AZ, 85220 |
| Phone | 4808893500 |
| Fax | 4808893502 |
| Enumeration date | 2006-05-05 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 174400000X | Specialist | Primary | 15719 | AZ |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 251760 | Medicaid | AZ | — |
Copy-ready billing details
Provider: Ralph Felder, M.D. NPI: 1376591016 Taxonomy: 174400000X (Specialist) Address: 1840 W APACHE TRL, Apache Junction, AZ, 85220
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1396703690 | Aztech Radiology and Open Mri | Organization | Specialist | Apache Junction, AZ |
Verify this record
Cross-check NPI 1376591016 against the authoritative CMS record: view Dr. Ralph C Felder on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.