Quick answers
- Does Holly L. Haas accept Medicare assignment?
- Yes. Medicare's clinician data says Holly L. Haas 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 Holly L. Haas see?
- In 2024, CMS data shows 167 Original Medicare patients and 593 services for Holly L. Haas. This counts Original Medicare only and measures volume, not quality.
- What is Holly L. Haas's NPI number?
- 1508271784. 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 Holly L. Haas, 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 | 167 |
|---|---|
| Services billed to Medicare | 593 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)117 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)76 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)61 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)36 services
- Injection of drug or substance under skin or into muscle (96372)35 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%
- Diabetes31%
- Ischemic heart disease27%
- Anxiety22%
Hospitals where Holly L. Haas works
Medicare's Facility Affiliation Data lists Holly L. Haas at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Citizens Medical CenterVictoria, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450023
- Columbus Community HospitalColumbus, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450370
- Lavaca Medical CenterHallettsville, TX · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 451376
- Yoakum Community HospitalYoakum, TX · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 451346
Practice locations
Addresses where Holly L. Haas is enrolled with Medicare (CMS data updated October 2, 2026).
- 208 N Texana St, Suite AHallettsville, TX 77964
- 306 N Texana StHallettsville, TX 77964 (314) 303‑9484
Group practices
Medicare enrollment lists Holly L. Haas as a member of this group (CMS data updated October 2, 2026).
- Hwc-Providers, PLLC4 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Hallettsville
Clinicians with the same Medicare primary specialty in Hallettsville, TX — not a recommendation.
Other clinicians in Hwc-Providers, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508271784 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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