Tad Callahan, MD
NPI 1225112931 · Obstetrics & Gynecology Physician · Santa Maria, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tad Callahan, MD is a Obstetrics & Gynecology Physician provider in Santa Maria, CA (NPI 1225112931).
Provider details
- NPI number
- 1225112931
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A24996 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2022-12-20
- Certified
- 2022-12-20
Frequently asked questions
- What is Tad Callahan's NPI number?
- Tad Callahan's National Provider Identifier (NPI) is 1225112931, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tad Callahan's specialty?
- Tad Callahan is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Tad Callahan located?
- Tad Callahan's practice location on file with NPPES is 210 S Palisade Dr Ste 101, Santa Maria, CA 93454-5932.
- What is Tad Callahan's phone number?
- The practice phone number listed in the NPPES registry for Tad Callahan is (805) 922-0481.
- Does Tad Callahan accept Medicare?
- Tad Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tad Callahan's NPI active?
- Yes — Tad Callahan's NPI (1225112931) is active in the NPPES registry as of the last update on 2022-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.