What is John Berk's NPI number?

John Berk's National Provider Identifier (NPI) is 1770507675, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Berk's specialty?

John Berk is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).

Where is John Berk located?

John Berk's practice location on file with NPPES is 20652 Redwood Rd, Castro Valley, CA 94546-5622.

What is John Berk's phone number?

The practice phone number listed in the NPPES registry for John Berk is (510) 733-6282.

Is John Berk's NPI active?

Yes — John Berk's NPI (1770507675) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

John Berk, D.D.S.

NPI 1770507675 · General Practice Dentistry · Castro Valley, CA

John Berk, D.D.S. is a General Practice Dentistry provider in Castro Valley, CA (NPI 1770507675).

Provider details

NPI number: 1770507675
Entity type: Individual
Primary specialty: General Practice DentistryDental Providers
Credential: D.D.S.
Sex: Male
Sole proprietor: No
License: 21540 (CA)

Specialties & taxonomies

General Practice DentistryPrimary1223G0001XLicense 21540 (CA)
Dental Providers

Profile Score

Detailed profile(91/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

20652 Redwood Rd

Castro Valley, CA 94546-5622

Phone: (510) 733-6282

Fax: (510) 733-6304

Street-level locationGet directions

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Mailing address