NPI age
4 years
Enumerated 2021-11-05
● Active
Type 1 · Individual
John S Harrison III, PA-C
Harrison is 1 of 207 physician assistant providers in Marietta and 1 of 4616 in Georgia.
Primary specialty
Physician Assistant
Licensed in
—
0 states
Status
Active
No deactivations on record
Last NPPES update
2021-11-05
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 4616 active physician assistant providers in Georgia.
NPI age
4 years
↓ 4 yr below median (8 yr)
State licenses
1 state
9% of peers hold multiple states
Subspecialties
0
24% of peers hold subspecialties
NPI lifetime · 2021 → 2026
2021-11Enumerated in NPPES
2021
2026
Where they practice
Practice location
1000 Halsey Ave Se
Marietta, GA 300604277
Mailing address
1000 Halsey Ave Se
Marietta, GA 300604277
Specialties
-
Physician Assistant PrimaryA physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally...
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
Recently enumerated nearby: 1 new physician assistant provider has been added in Marietta in the last 180 days.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.