NPI age
20 years
Enumerated 2006-02-13
● Active
Type 1 · Individual
DR. Ethan Allen Natelson, M.D.
Natelson is 1 of 48 internal medicine providers in Houston and 1 of 78 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2016-03-03
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 78 active internal medicine providers in Texas.
NPI age
20 years
↑ 4 yr above median (16 yr)
State licenses
1 state
14% of peers hold multiple states
Subspecialties
1
In the 52% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-02Enumerated in NPPES
2006
2026
Where they practice
Practice location
6550 Fannin St, Suite 1001
Houston, TX 770302717
Mailing address
8707 Wateka Dr
Houston, TX 770744015
Specialties
-
Internal Medicine PrimaryAn internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.
-
Internal MedicineAn 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...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | P01265010 | RR MEDICARE |
| 05 (TX) | 041934304 | |
| 01 (TX) | DE4842 | RAILROAD MEDICARE |
| 05 (TX) | 041934303 | |
| 01 (TX) | 8V4457 | BLUE CROSS BLUE SHIELD |
Practice context
Part of a multi-provider practice. 376 other active providers share 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.