John Cowan, MD
NPI 1326142456 · Internal Medicine Physician · Cartersville, GA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Cowan, MD is a Internal Medicine Physician provider in Cartersville, GA (NPI 1326142456).
Provider details
- NPI number
- 1326142456
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 15363 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-09-11
- Last updated
- 2012-11-28
Frequently asked questions
- What is John Cowan's NPI number?
- John Cowan's National Provider Identifier (NPI) is 1326142456, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Cowan's specialty?
- John Cowan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Cowan located?
- John Cowan's practice location on file with NPPES is 962 Joe Frank Harris Pkwy Se, Cartersville, GA 30120.
- What is John Cowan's phone number?
- The practice phone number listed in the NPPES registry for John Cowan is (770) 386-0090.
- Does John Cowan accept Medicare?
- John Cowan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Cowan's NPI active?
- Yes — John Cowan's NPI (1326142456) is active in the NPPES registry as of the last update on 2012-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.