John E Turns MD Inc

John E Turns MD Inc is a healthcare organization registered as Family Medicine Physician in Castro Valley, CA, holding Type 2 (organization) NPI 1679657779 since 2006. The authorized official on file is Mayda Valadez, Office Manager.

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NPI	1679657779
Entity type	Organization (Type 2)
Legal business name	John E Turns MD Inc
Other name	<Unavail>
Practice address	22101 REDWOOD RD, Castro Valley, CA, 94546
Phone	5105824700
Fax	5105827302
Enumeration date	2006-10-25
Last updated in NPPES	2017-06-13

Authorized official

Name	Mayda Valadez
Title	Office Manager
Phone	5105824700

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207Q00000X	Family Medicine Physician	Primary	G044402	CA

Copy-ready billing details

Provider: John E Turns MD Inc
NPI: 1679657779
Taxonomy: 207Q00000X (Family Medicine Physician)
Address: 22101 REDWOOD RD, Castro Valley, CA, 94546

Providers at this address

NPI	Name	Type	Specialty	Location
1720075914	Judy Nogales-Chapman	Individual	Medical Physician Assistant	Castro Valley, CA
1942371588	John Turns	Individual	Family Medicine Physician	Castro Valley, CA
1972637452	Pt Works	Organization	Physical Therapist	Castro Valley, CA
1144499559	Mitchell Sill	Individual	Chiropractor	Castro Valley, CA
1063739340	Michael S Mancina MD and Asssociates of California	Organization	Specialist	Castro Valley, CA
1629503503	Progressive Home Health and Hospice Care- Hayward, LLC	Organization	Community Based Hospice Care Agency	Castro Valley, CA
1134655723	Progressive Home Health and Hospice Care- Hayward, LLC	Organization	Home Health Agency	Castro Valley, CA

Verify this record

Cross-check NPI 1679657779 against the authoritative CMS record: view John E Turns MD Inc 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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2017-06-13. Verify at npiregistry.cms.hhs.gov.

Where is John E Turns MD Inc located?

The practice location on file with NPPES is in Castro Valley, CA.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2017-06-13.