DR. HALYNA IVASHCHUK M.D.
NPI 1912361585
Internal Medicine - Pulmonary Disease in Houston, TX
About Dr. Halyna Ivashchuk M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HALYNA IVASHCHUK M.D. (NPI 1912361585) is an individual pulmonary disease provider in Houston, Texas, licensed in Texas (S2350) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist Hospital, and maintains 6 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 6
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Halyna Ivashchuk M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
11Medicare enrollment records show Halyna Ivashchuk reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77065
- Reassigned Medicare billing, Texas enrollment
- 121 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,407 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 1,579 clinicians in this Medicare group
Farmington, MN 55024
- Reassigned Medicare billing, Minnesota enrollment
- 2,302 clinicians in this Medicare group
Burnsville, MN 55337
- Reassigned Medicare billing, Minnesota enrollment
- 3,633 clinicians in this Medicare group
Burnsville, MN 55337
- Reassigned Medicare billing, Minnesota enrollment
- 4,038 clinicians in this Medicare group
Cottage Grove, MN 55016
- Reassigned Medicare billing, Minnesota enrollment
- 2,361 clinicians in this Medicare group
Woodbury, MN 55125
- Reassigned Medicare billing, Minnesota enrollment
- 955 clinicians in this Medicare group
Saint Paul, MN 55104
- Reassigned Medicare billing, Minnesota enrollment
- 1,178 clinicians in this Medicare group
Saint Paul, MN 55104
- Reassigned Medicare billing, Minnesota enrollment
- 2,373 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Houston Methodist Hospital
Acute Care Hospitals · Houston, TXHouston Methodist Willowbrook Hospital
Acute Care Hospitals · Houston, TXHouston Methodist The Woodlands Hospital
Acute Care Hospitals · The Woodlands, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77070 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HOUSTON, TX 77070
HOUSTON, TX 77070
HOUSTON, TX 77070
HOUSTON, TX 77070
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Halyna Ivashchuk's NPI number?
The NPI number for Halyna Ivashchuk is 1912361585. It was assigned to this individual provider in the NPPES registry on April 11, 2016.
Where is Halyna Ivashchuk located?
Halyna Ivashchuk practices at 13300 Hargrave Rd Ste 500, Houston, TX 77070. The listed phone number is (281) 357-0111.
What is Halyna Ivashchuk's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Halyna Ivashchuk enrolled in Medicare?
Yes. Halyna Ivashchuk is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Halyna Ivashchuk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Halyna Ivashchuk reassigns Medicare benefits to 11 organizations: Knd Development 59 LLC (Houston, TX), Tmh Physician Associates PLLC (Houston, TX), Houston Methodist Specialty Physicians (Houston, TX), Fairview Clinics (Farmington, MN), Fairview Express Care (Burnsville, MN) and 6 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Halyna Ivashchuk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Halyna Ivashchuk affiliated with any hospitals?
According to CMS data, Halyna Ivashchuk is affiliated with Houston Methodist Hospital, Houston Methodist Willowbrook Hospital and Houston Methodist The Woodlands Hospital.
When was this NPI record last updated?
The NPPES record for Halyna Ivashchuk was last updated on March 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Halyna Ivashchuk, M.D. · NPI 1912361585
Pulmonary Disease physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since April 11, 2016.
## Identity
- **NPI:** 1912361585 (Entity type: Individual)
- **Enumerated:** April 11, 2016
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** S2350 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 13300 HARGRAVE RD STE 500, Houston, TX 77070-4374
- **Phone:** (281) 357-0111
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 11 organizations under Medicare reassignment (form CMS-855R): Knd Development 59 LLC (NPI 1518296011, Houston, TX); Tmh Physician Associates PLLC (NPI 1275779225, Houston, TX); Houston Methodist Specialty Physicians (NPI 1902614332, Houston, TX); Fairview Clinics (NPI 1043491749, Farmington, MN); Fairview Express Care (NPI 1083806772, Burnsville, MN); and 6 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** March 18, 2026
- **Other identifiers:** Medicaid 401715401 (TX); Other H08LN79901 (TX)
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Source: [NPI Profile](https://npiprofile.com/npi/1912361585) · Data from the CMS NPPES public registry.