Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Specialty Medical Group Central California - Dept of Genetics

Clinical Genetics (M.D.) Physician in Madera, CA · enumerated 2007 · authorized official Ralph Diaz, President and Medical Director.

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

National Provider Identifier

1306033949

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Registry record

Entity type Organization (Type 2)

Legal business name Specialty Medical Group Central California - Dept of Genetics

Parent organization Specialty Medical Group Central California, Inc.

Practice address 9300 Valley Childrens Pl, Madera, CA, 93636

Phone (559) 353-6400

Fax (559) 353-7213

Enumeration date Sep 27, 2007

Last updated in NPPES Sep 27, 2007

Taxonomy & classification

207SG0201X Clinical Genetics (M.D.) Physician Allopathic & Osteopathic Physicians Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Ralph Diaz

Title President and Medical Director

Phone (559) 353-5700

Other identifiers

Identifier	Type	State	Issuer
GR0078685	Medicaid	CA	-

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

What type of organization is Specialty Medical Group Central California - Dept of Genetics?

Specialty Medical Group Central California - Dept of Genetics is registered in NPPES as a Clinical Genetics (M.D.) Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

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Joel Saltzman Anesthesiology Physician · Madera, CA NPI 1235138389 Kelly Kriwanek Rappleye Pediatric Emergency Medicine (Emergency Medicine) Physician · Madera, CA NPI 1346240520 Elis Olson Pediatric Emergency Medicine (Emergency Medicine) Physician · Madera, CA NPI 1285629923 Moustafa Aouthmany Neonatal-Perinatal Medicine Physician · Madera, CA NPI 1164419834 Tina Le Pharmacist · Madera, CA NPI 1457348989 David Metz Nephrology Physician · Madera, CA NPI 1780671610 Lawrence Wetterau Pediatric Endocrinology Physician · Madera, CA NPI 1457341497 Cesar Santos Neurology with Special Qualifications in Child Neurology Physician · Madera, CA NPI 1851377790

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-27.