IndividualActive
Matthew Callahan
NPI 1245539097 · Clinic/Center · Billerica, MA
Matthew Callahan is a Clinic/Center provider in Billerica, MA (NPI 1245539097).
Provider details
- NPI number
- 1245539097
- Entity type
- Individual
- Primary specialty
- Clinic/CenterAmbulatory Health Care Facilities
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
Detailed profile(75/100 index)
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
83% 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
15 Islington St
Billerica, MA 01821-5067
Phone: (978) 362-1742
Street-level locationGet directions
Mailing address
15 Islington St
Billerica, MA 01821-5067
Registry dates
- Enumerated
- 2011-03-18
- Last updated
- 2011-03-18
Frequently asked questions
- What is Matthew Callahan's NPI number?
- Matthew Callahan's National Provider Identifier (NPI) is 1245539097, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Callahan's specialty?
- Matthew Callahan is listed in the NPPES registry with a primary specialty of Clinic/Center (Ambulatory Health Care Facilities).
- Where is Matthew Callahan located?
- Matthew Callahan's practice location on file with NPPES is 15 Islington St, Billerica, MA 01821-5067.
- What is Matthew Callahan's phone number?
- The practice phone number listed in the NPPES registry for Matthew Callahan is (978) 362-1742.
- Is Matthew Callahan's NPI active?
- Yes — Matthew Callahan's NPI (1245539097) is active in the NPPES registry as of the last update on 2011-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.