Quick answers
- Does Kathryn L. Hagan accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn L. Hagan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Kathryn L. Hagan see?
- In 2024, CMS data shows 36 Original Medicare patients and 70 services for Kathryn L. Hagan. This counts Original Medicare only and measures volume, not quality.
- What is Kathryn L. Hagan's NPI number?
- 1154859353. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Kathryn L. Hagan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 36 |
|---|---|
| Services billed to Medicare | 70 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Comprehensive hearing and speech recognition test (92557)32 services
- Test to assess middle ear function (92567)30 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes36%
- Ischemic heart disease33%
Practice locations
Addresses where Kathryn L. Hagan is enrolled with Medicare (CMS data updated October 2, 2026).
- 16545 Southwest Fwy, Suite 100Sugar Land, TX 77479 (281) 649‑7200
- 915 Gessner Rd, Suite 280Houston, TX 77024 (713) 461‑2626
Group practices
Medicare enrollment lists Kathryn L. Hagan as a member of these groups (CMS data updated October 2, 2026).
- Ent and Allergy Associates of Texas PLLC31 clinicians in the group
- Houston Ear Nose and Throat Clinic LLP31 clinicians in the group
Specialties
- Qualified Audiologistprimary
Other audiologists in Sugar Land
Clinicians with the same Medicare primary specialty in Sugar Land, TX — not a recommendation.
Other clinicians in Ent and Allergy Associates of Texas PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | AU |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154859353 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians