Timothy Callahan, PSY.D.
NPI 1861850026 · Clinical Psychologist · Yellow Springs, OH
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Callahan, PSY.D. is a Clinical Psychologist provider in Yellow Springs, OH (NPI 1861850026).
Provider details
- NPI number
- 1861850026
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4411 (OH)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2016-02-03
- Last updated
- 2016-02-03
Frequently asked questions
- What is Timothy Callahan's NPI number?
- Timothy Callahan's National Provider Identifier (NPI) is 1861850026, 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 Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Timothy Callahan located?
- Timothy Callahan's practice location on file with NPPES is 360 E Enon Rd, Yellow Springs, OH 45387-1415.
- What is Timothy Callahan's phone number?
- The practice phone number listed in the NPPES registry for Timothy Callahan is (937) 767-1303.
- Does Timothy Callahan accept Medicare?
- Timothy Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Callahan's NPI active?
- Yes — Timothy Callahan's NPI (1861850026) is active in the NPPES registry as of the last update on 2016-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.