Quick answers
- Does Portland J. Mithen accept Medicare assignment?
- Medicare's clinician data says Portland J. Mithen may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Portland J. Mithen see?
- In 2024, CMS data shows 19 Original Medicare patients and 20 services for Portland J. Mithen. This counts Original Medicare only and measures volume, not quality.
- What is Portland J. Mithen's NPI number?
- 1972641850. 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 Portland J. Mithen, 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 | 19 |
|---|---|
| Services billed to Medicare | 20 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 63 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)13 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 cholesterol74%
Practice locations
Addresses where Portland J. Mithen is enrolled with Medicare (CMS data updated October 2, 2026).
- 2901 Montopolis DrAustin, TX 78741 (512) 978‑9955
- 4909 N StNacogdoches, TX 75965 (936) 560‑9898
- 9900s Interstate 35Austin, TX 78748 (512) 291‑5577
Group practices
Medicare enrollment lists Portland J. Mithen as a member of these groups (CMS data updated October 2, 2026).
- TMC Provider Group PLLC211 clinicians in the group
- Central Texas Community Health Centers173 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Other clinicians in TMC Provider Group PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1972641850 |
| 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