Michael Callahan, PA-C
NPI 1467480673 · Gastroenterology Physician · Decatur, GA
Michael Callahan, PA-C is a Gastroenterology Physician provider in Decatur, GA (NPI 1467480673).
Provider details
- NPI number
- 1467480673
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- 3240 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-06-28
- Last updated
- 2025-09-11
Frequently asked questions
- What is Michael Callahan's NPI number?
- Michael Callahan's National Provider Identifier (NPI) is 1467480673, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Callahan's specialty?
- Michael Callahan is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Callahan located?
- Michael Callahan's practice location on file with NPPES is 1670 Clairmont Rd, Decatur, GA 30033-4004.
- What is Michael Callahan's phone number?
- The practice phone number listed in the NPPES registry for Michael Callahan is (404) 321-6111.
- Is Michael Callahan's NPI active?
- Yes — Michael Callahan's NPI (1467480673) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.