Quick answers
- Does Margaret K. Hart accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret K. Hart 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 Margaret K. Hart see?
- In 2024, CMS data shows 469 Original Medicare patients and 2,472 services for Margaret K. Hart. This counts Original Medicare only and measures volume, not quality.
- What is Margaret K. Hart's NPI number?
- 1922047133. 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 Margaret K. Hart, 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 | 469 |
|---|---|
| Services billed to Medicare | 2,472 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)975 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)434 services
- Destruction of precancer skin growth, 1 growth (17000)397 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)122 services
- Biopsy of related skin growth, first growth (11102)99 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 cholesterol75%
- High blood pressure55%
- Arthritis39%
- Ischemic heart disease28%
- Osteoporosis19%
- Depression15%
Practice locations
Addresses where Margaret K. Hart is enrolled with Medicare (CMS data updated October 2, 2026).
- 3807 Spicewood Springs Rd, Suite 200Austin, TX 78759 (512) 476‑9195
- 6618 Sitio Del Rio Blvd, Suite D101Austin, TX 78730 (512) 478‑3376
Group practices
Medicare enrollment lists Margaret K. Hart as a member of this group (CMS data updated October 2, 2026).
- Oliver Street 5.01(A) Inc168 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Other clinicians in Oliver Street 5.01(A) Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922047133 |
| 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