What is Timothy Callahan's NPI number?

Timothy Callahan's National Provider Identifier (NPI) is 1275633836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Timothy Callahan's specialty?

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

Where is Timothy Callahan located?

Timothy Callahan's practice location on file with NPPES is 1801 Oakland Blvd Ste 120, Walnut Creek, CA 94596-7001.

What is Timothy Callahan's phone number?

The practice phone number listed in the NPPES registry for Timothy Callahan is (925) 947-0616.

Is Timothy Callahan's NPI active?

Yes — Timothy Callahan's NPI (1275633836) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Timothy Callahan, DDS

NPI 1275633836 · General Practice Dentistry · Walnut Creek, CA

Timothy Callahan, DDS is a General Practice Dentistry provider in Walnut Creek, CA (NPI 1275633836).

Provider details

NPI number: 1275633836
Entity type: Individual
Primary specialty: General Practice DentistryDental Providers
Credential: DDS
Sex: Male
Sole proprietor: Yes
License: 30364 (CA)

Specialties & taxonomies

General Practice DentistryPrimary1223G0001XLicense 30364 (CA)
Dental Providers

Profile Score

Detailed profile(90/100 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

1801 Oakland Blvd Ste 120

Walnut Creek, CA 94596-7001

Phone: (925) 947-0616

Street-level locationGet directions

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Mailing address