Quick answers
- Does Iwona Garben accept Medicare assignment?
- Yes. Medicare's clinician data says Iwona Garben 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 Iwona Garben see?
- In 2024, CMS data shows 309 Original Medicare patients and 1,172 services for Iwona Garben. This counts Original Medicare only and measures volume, not quality.
- What is Iwona Garben's NPI number?
- 1891842613. 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 Iwona Garben, 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 | 309 |
|---|---|
| Services billed to Medicare | 1,172 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)680 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)286 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)94 services
- Detection test by immunoassay with direct visual observation for influenza virus (87804)28 services
- Injection of drug or substance under skin or into muscle (96372)17 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%
- Arthritis55%
- Ischemic heart disease40%
- Diabetes34%
- Chronic kidney disease28%
Hospitals where Iwona Garben works
Medicare's Facility Affiliation Data lists Iwona Garben 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.
- Houston Methodist Baytown HospitalBaytown, TX · Acute Care Hospital · Medicare rating: 5 of 5 stars · CCN 450424
Practice locations
Addresses where Iwona Garben is enrolled with Medicare (CMS data updated October 2, 2026).
- 8608 N Hwy 146 600, Houston Methodist Primary Care GroupBaytown, TX 77523 (832) 556‑6936
Group practices
Medicare enrollment lists Iwona Garben as a member of this group (CMS data updated October 2, 2026).
- TMH Physician Associates PLLC1,690 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Baytown
Clinicians with the same Medicare primary specialty in Baytown, TX — not a recommendation.
Other clinicians in TMH Physician Associates PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891842613 |
| 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