NPI age
9 years
Enumerated 2017-04-04
● Active
Type 1 · Individual
Michael Castillo, MD
Castillo is 1 of 137 internal medicine providers in Atlanta and 1 of 643 in Georgia.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
GA, NY
2 states
Status
Active
No deactivations on record
Last NPPES update
2025-02-27
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 643 active internal medicine providers in Georgia.
NPI age
9 years
↓ 10 yr below median (19 yr)
State licenses
2 states
Top 81% — 19% of peers are multi-state
Subspecialties
0
30% of peers hold subspecialties
NPI lifetime · 2017 → 2026
2017-04Enumerated in NPPES
2017
2026
Where they practice
Practice location
980 Johnson Ferry Rd Ste 820
Atlanta, GA 303421608
Mailing address
980 Johnson Ferry Rd Ste 820
Atlanta, GA 303421608
Additional practice locations
1 secondary location on file with NPPES.
Location 2
515 6th St
Brooklyn, NY 112153608
Specialties
-
Internal Medicine PrimaryAn internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and...
Practice context
Part of a multi-provider practice. 2 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.