NPI age
8 years
Enumerated 2017-06-29
● Active
Type 1 · Individual
Ian M Greenberg, MD
Greenberg is 1 of 179 internal medicine providers in Dallas and 1 of 1807 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, IL, ID
3 states
Status
Active
No deactivations on record
Last NPPES update
2025-06-06
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1807 active internal medicine providers in Texas.
NPI age
8 years
↓ 11 yr below median (19 yr)
State licenses
3 states
Top 83% — 17% of peers are multi-state
Subspecialties
1
In the 35% of peers with subspecialties
NPI lifetime · 2017 → 2026
2017-06Enumerated in NPPES
2017
2026
Where they practice
Practice location
122 W Colorado Blvd
Dallas, TX 752082382
Mailing address
3930 McKinney Ave Apt 209
Dallas, TX 752042042
Additional practice locations
1 secondary location on file with NPPES.
Location 2
775 Pole Line Rd W Ste 203
Twin Falls, ID 833015820
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...
-
Internal MedicineA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer,...
Practice context
Part of a multi-provider practice. 27 other active providers share this practice address in NPPES.
Recently enumerated nearby: 2 new internal medicine providers have been added in Dallas 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.