NPI age
9 years
Enumerated 2016-06-19
● Active
Type 1 · Individual
DR. Iman Doostan, M.D, PH.D
Doostan is 1 of 248 internal medicine providers in Houston and 1 of 1069 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-06-02
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1069 active internal medicine providers in Texas.
NPI age
9 years
↓ 9 yr below median (18 yr)
State licenses
1 state
22% of peers hold multiple states
Subspecialties
2
In the 52% of peers with subspecialties
NPI lifetime · 2016 → 2026
2016-06Enumerated in NPPES
2016
2026
Where they practice
Practice location
6400 Fannin St Ste 2900
Houston, TX 770301555
Mailing address
5810 Utsa Blvd Apt 2135
San Antonio, TX 782494079
Additional practice locations
1 secondary location on file with NPPES.
Location 2
4502 Medical Dr
San Antonio, TX 782294402
Specialties
-
Internal Medicine PrimaryAn internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine...
-
HospitalistHospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term...
-
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. 12 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.