NPI age
18 years
Enumerated 2007-07-10
● Active
Type 1 · Individual
Michael J. Grupka, MD
Grupka is 1 of 5 internal medicine providers in Hiram and 1 of 643 in Georgia.
Primary specialty
Internal Medicine
Licensed in
GA
1 state
Status
Active
No deactivations on record
Last NPPES update
2018-05-31
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
18 years
≈ at median (19 yr)
State licenses
1 state
19% of peers hold multiple states
Subspecialties
0
30% of peers hold subspecialties
NPI lifetime · 2007 → 2026
2007-07Enumerated in NPPES
2007
2026
Where they practice
Practice location
148 Bill Carruth Pkwy Ste 200
Hiram, GA 30141
Mailing address
711 Canton Rd Ne Ste 300
Marietta, GA 300608949
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...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (GA) | 483829670C |
Practice context
Part of a multi-provider practice. 1 other active provider shares 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.