Timothy Callahan, PsyD
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2016
- Practice address
- 416 Xenia Ave, Yellow Springs, OH 45387
- Practice phone
- Call (937) 767-9171
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Layh and Associates Inc
Yellow Springs, Ohio
Find Timothy Callahan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Timothy Callahan is a clinical psychologist in Yellow Springs, Ohio
Timothy Callahan practices at Layh and Associates Inc in Yellow Springs, Ohio.
Timothy Callahan's NPI, 1861850026, was assigned on February 3, 2016. Timothy Callahan graduated from Wright State University Boonshoft School of Medicine in 1989. Timothy Callahan holds Ohio license 4411.
- NPI
- 1861850026NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002208675
- NPI enumeration date
- February 3, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (937) 767-9171
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Timothy Callahan practices at Layh and Associates Inc in Yellow Springs, Ohio
Timothy Callahan's primary practice is Layh and Associates Inc, at 416 Xenia Ave, Yellow Springs, OH 45387 in Greene County. The practice phone is (937) 767-9171.
- Layh and Associates Inc416 Xenia Ave, Yellow Springs, OH 45387 · Greene CountyPhone(937) 767-9171
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Timothy Callahan is affiliated with 2 sites of care and 1 medical group
Timothy Callahan's primary practice is Layh and Associates Inc in Yellow Springs, Ohio. The medical group on file is Layh & Associates, Inc. Dmand AI also links Timothy Callahan to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Timothy Callahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Timothy Callahan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Layh and Associates Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Timothy Callahan is one of 662 clinical psychologists in Ohio
Clinical is Timothy Callahan's primary specialty in the NPI Registry, under taxonomy code 103TC0700X. Timothy Callahan is licensed in Ohio.
Specialties and state licenses
- Clinical psychologist, OhioPrimary
Clinical psychologists near Timothy Callahan
Counts of clinical psychologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Timothy Callahan's patients have a median age of 47
Across all payers, Dmand AI patient panel data puts Timothy Callahan's median patient age at 47, with 47% women.
Timothy Callahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women47%
- Men51%
Source: Dmand AI Patient Panel Data
How Timothy Callahan takes part in Medicare
Timothy Callahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Timothy Callahan graduated from Wright State University Boonshoft School of Medicine
Timothy Callahan graduated from Wright State University Boonshoft School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Timothy Callahan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Timothy Callahan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Timothy Callahan's NPI number?
Timothy Callahan's NPI number is 1861850026. It was assigned on February 3, 2016, and it is active in the NPI Registry.
What does Timothy Callahan specialize in?
Timothy Callahan is a clinical psychologist in Yellow Springs, Ohio. The primary specialty in the NPI Registry is Clinical Psychologist (taxonomy code 103TC0700X).
Where does Timothy Callahan practice?
Timothy Callahan practices at 416 Xenia Ave, Yellow Springs, OH 45387. Timothy Callahan's primary practice is Layh and Associates Inc in Yellow Springs, Ohio. Dmand AI also links Timothy Callahan to 1 group practice or clinic.
What is Timothy Callahan's office phone number?
The practice phone on file for Timothy Callahan is (937) 767-9171.
What is Timothy Callahan's medical license number?
Timothy Callahan holds Ohio license 4411.
What medical group is Timothy Callahan part of?
Timothy Callahan is linked to Layh & Associates, Inc.
Does Timothy Callahan accept Medicare?
Yes. CMS lists Timothy Callahan as accepting Medicare assignment.
Where did Timothy Callahan go to medical school?
Timothy Callahan graduated from Wright State University Boonshoft School of Medicine in 1989.
How long has Timothy Callahan been practicing?
Timothy Callahan graduated from medical school in 1989, 37 years ago.
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