NPI age
10 years
Enumerated 2016-04-11
● Active
Type 1 · Individual
DR. Halyna Ivashchuk, M.D.
Ivashchuk is 1 of 247 internal medicine providers in Houston and 1 of 1318 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX, MN
2 states
Status
Active
No deactivations on record
Last NPPES update
2026-03-18
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1318 active internal medicine providers in Texas.
NPI age
10 years
↓ 8 yr below median (18 yr)
State licenses
2 states
Top 84% — 15% of peers are multi-state
Subspecialties
1
In the 57% of peers with subspecialties
NPI lifetime · 2016 → 2026
2016-04Enumerated in NPPES
2016
2026
Where they practice
Practice location
13300 Hargrave Rd Ste 500
Houston, TX 770704374
Mailing address
13300 Hargrave Rd Ste 500
Houston, TX 770704374
Additional practice locations
6 secondary locations on file with NPPES.
Location 2
1401 E 8th St
Weslaco, TX 785966640
Location 3
2945 Hazelwood St Ste 100
Maplewood, MN 551091242
Location 4
6431 Fannin St Ste Msb 5111
Houston, TX 770301501
Location 5
13300 Hargrave Rd Ste 500
Houston, TX 770704374
Location 6
5501 S McColl Rd
Edinburg, TX 785395503
Location 7
5423 S McColl Rd
Edinburg, TX 785399183
Specialties
-
Internal Medicine PrimaryAn internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex...
-
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,...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 401715401 | |
| 01 (TX) | H08LN79901 | BCBS |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 8 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.