John Callahan, PTA/COTA
NPI 1750689303 · Physical Therapy Assistant · Concord, NH
John Callahan, PTA/COTA is a Physical Therapy Assistant provider in Concord, NH (NPI 1750689303).
Provider details
- NPI number
- 1750689303
- Entity type
- Individual
- Primary specialty
- Physical Therapy AssistantRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- PTA/COTA
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0382 (NH)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
- 2011-03-07
- Last updated
- 2011-03-07
Frequently asked questions
- What is John Callahan's NPI number?
- John Callahan's National Provider Identifier (NPI) is 1750689303, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Callahan's specialty?
- John Callahan is listed in the NPPES registry with a primary specialty of Physical Therapy Assistant (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is John Callahan located?
- John Callahan's practice location on file with NPPES is 20 Maitland St, Concord, NH 03301.
- What is John Callahan's phone number?
- The practice phone number listed in the NPPES registry for John Callahan is (603) 485-8743.
- Is John Callahan's NPI active?
- Yes — John Callahan's NPI (1750689303) is active in the NPPES registry as of the last update on 2011-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.