NPI age
18 years
Enumerated 2007-08-15
● Active
Type 1 · Individual
DR. Mary John Ninan, M.D
Ninan is 1 of 5 internal medicine providers in Johns Creek and 1 of 494 in Georgia.
Primary specialty
Internal Medicine
Plus 3 subspecialties
Licensed in
GA, TX
2 states
Status
Active
No deactivations on record
Last NPPES update
2020-08-20
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 494 active internal medicine providers in Georgia.
NPI age
18 years
≈ at median (19 yr)
State licenses
2 states
Top 78% — 21% of peers are multi-state
Subspecialties
1
In the 33% of peers with subspecialties
NPI lifetime · 2007 → 2026
2007-08Enumerated in NPPES
2007
2026
Where they practice
Practice location
6300 Hospital Pkwy Ste 300
Johns Creek, GA 300971982
Mailing address
1835 Savoy Dr Ste 300
Atlanta, GA 303411071
Specialties
-
Internal Medicine PrimaryAn internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine...
-
Student in an Organized Health Care Education/Training ProgramAn individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (GA) | G10127A | MEDICARE PTAN |
| 05 (GA) | 003158193C | |
| 05 (GA) | 003158193D |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 5 other active providers share this practice address in NPPES.
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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.