Eleni Efstathiou, MD

Medical oncologist in Houston, Texas · NPI 1447654470

Eleni Efstathiou is one of 143 medical oncologists practicing in Houston, Texas. Eleni Efstathiou practices with TMH Physician Associates PLLC.

Registry record (NPPES)

NPI: 1447654470
Type: Type 1 · Individual
Primary taxonomy: Internal Medicine, Medical Oncology · 207RX0202X
Address on file: 3303 S Bond Ave
Portland, OR 97239-4501
(503) 494-6594
Enumerated: Oct 20, 2014
Record last updated: Feb 11, 2026
License states listed: OR, TX

Medicare (CMS)

Enrollment: Medicare-enrolled in OR, TX
Medical Oncology
Revalidation due: No date set by CMS

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Part D prescribing
Procedure volumes by CPT code
Group affiliations and colleagues
Full enrollment history

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Practice locations

6445 Main St
Houston, TX 77030
6445 Main St Opc
Houston, TX 77030
6565 Fannin St
Houston, TX 77030
6565 Fannin St Main 577 Methodist Acad Med Assoc
Houston, TX 77030
(713) 441-0428
7575 San Felipe St Suite 155
Houston, TX 77063
(713) 266-9955
4710 Bellaire Blvd
Bellaire, TX 77401
(713) 363-9411
16605 Southwest Fwy
Sugar Land, TX 77479
(281) 275-0800
16605 Southwest Fwy 400 Mob3 Methodist Family Medicine Group
Sugar Land, TX 77479
(281) 275-0800
16605 SW Fwy 410 Methodist Diag Card Of Houston
Sugar Land, TX 77479
(281) 274-0148

More medical oncologists in Houston

Updated August 2026. Practice locations and specialty come from the CMS Doctors and Clinicians file, the registry record from NPPES, and enrollment from CMS Medicare enrollment files. NPI records are corrected at the source, through NPPES.