DR. JOHN K BERK D.D.S.
NPI 1770507675
Dentist - General Practice in Castro Valley, CA

Q: What is John Berk's NPI number?

The NPI number for John Berk is 1770507675. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Q: What is John Berk's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for John Berk was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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 July 26, 2006

20652 REDWOOD RD, CASTRO VALLEY, CA 94546(510) 733-6282(510) 733-6304 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. John K Berk D.d.s. NPPES

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

DR. JOHN K BERK D.D.S. (NPI 1770507675) is an individual general practice provider in Castro Valley, California, licensed in California (21540) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1770507675

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. JOHN K BERKCredential: D.D.S.

Location Address20652 REDWOOD RDCastro Valley, CA 94546-5622

Mailing Address20652 Redwood RdCastro Valley, CA 94546-5622 · (510) 733-6282 · Fax (510) 733-6304

Phone(510) 733-6282

Fax(510) 733-6304

Sole ProprietorNo

Enumeration DateJuly 26, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1770507675 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in CA · 21540

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

20652 REDWOOD RD, Castro Valley, CA 94546

Open in Google Maps ↗

Other Providers at the Same Location NPPES

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

DR. HOA VINCENT LAI DDS

Dentist

20652 REDWOOD RD
CASTRO VALLEY, CA 94546

Alameda County (510) 733-6282

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 John Berk's NPI number?

The NPI number for John Berk is 1770507675. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is John Berk located?

John Berk practices at 20652 Redwood Rd, Castro Valley, CA 94546. The listed phone number is (510) 733-6282.

What is John Berk's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for John Berk was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.