Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana Mahler, RD

Registered Dietitian in Alpine, CA · enumerated 2023.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1568149359

Verified

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Registry record

Entity type Individual (Type 1)

Name Diana Mahler

Credential RD

Sex Female

Practice address 4058 Willows Rd, Alpine, CA, 91901

Phone (619) 445-1188

Enumeration date Jul 3, 2023

Last updated in NPPES Jul 3, 2023

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 1019627 Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Diana Mahler?

Diana Mahler is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Southern Indian Health Council Clinic/Center · Alpine, CA NPI 1346247947 Michael Walker Family Medicine Physician · Alpine, CA NPI 1023015906 Eric Greenberg Family Medicine Physician · Alpine, CA NPI 1639161318 Jean Mullenax Pediatrics Physician · Alpine, CA NPI 1053377671 Charlene Tobin Family Medicine Physician · Alpine, CA NPI 1639105497 Brian Diep Family Medicine Physician · Alpine, CA NPI 1144240631 Linda Schwartz Pharmacist · Alpine, CA NPI 1184705345 Noemi Vazquez Family Medicine Physician · Alpine, CA NPI 1174604680

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-03.