NPI age
19 years
Enumerated 2006-06-05
● Active
Type 1 · Individual
DR. Marcus L. Brown, M.D.
Brown is 1 of 49 internal medicine providers in Atlanta and 1 of 238 in Georgia.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
GA, AL
2 states
Status
Active
No deactivations on record
Last NPPES update
2021-02-26
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 238 active internal medicine providers in Georgia.
NPI age
19 years
≈ at median (18 yr)
State licenses
2 states
Top 70% — 29% of peers are multi-state
Subspecialties
1
In the 72% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-06Enumerated in NPPES
2006
2026
Where they practice
Practice location
5670 Peachtree Dunwoody, Suite 880
Atlanta, GA 303421699
Mailing address
5670 Peachtree Dunwoody, Suite 880
Atlanta, GA 303421699
Specialties
-
Internal Medicine PrimaryAn area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical...
-
SpecialistAn individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (AL) | 009936179 | |
| 05 (GA) | 666103003C |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Solo or small practice. No 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.