NPI age
12 years
Enumerated 2014-04-18
● Active
Type 1 · Individual
Nikolaos Diakos, M.D.
Diakos is 1 of 108 internal medicine providers in Houston and 1 of 883 in Texas.
Primary specialty
Internal Medicine
Plus 4 subspecialties
Licensed in
TX, MA
2 states
Status
Active
No deactivations on record
Last NPPES update
2023-03-20
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 883 active internal medicine providers in Texas.
NPI age
12 years
↓ 5 yr below median (17 yr)
State licenses
2 states
Top 78% — 21% of peers are multi-state
Subspecialties
3
In the 72% of peers with subspecialties
NPI lifetime · 2014 → 2026
2014-04Enumerated in NPPES
2014
2026
Where they practice
Practice location
6624 Fannin St, Suite 2600
Houston, TX 770302338
Mailing address
6624 Fannin St, Suite 2600
Houston, TX 770302338
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
30 North 1900 East, 4c116 Som
Salt Lake City, UT 84132
Location 3
800 Washington St
Boston, MA 021111552
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...
-
Internal MedicineSpecialists in Advanced Heart Failure and Transplant Cardiology would participate in the inpatient and outpatient management of patients with advanced heart failure across the spectrum from consideration for high-risk cardiac surgery,...
-
Internal MedicineAn internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
-
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.
Practice context
Part of a multi-provider practice. 158 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new internal medicine provider has been added in Houston 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.