Quick answers
- Does Allison L. Sherwood accept Medicare assignment?
- Yes. Medicare's clinician data says Allison L. Sherwood 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 Allison L. Sherwood see?
- In 2024, CMS data shows 109 Original Medicare patients and 288 services for Allison L. Sherwood. This counts Original Medicare only and measures volume, not quality.
- What is Allison L. Sherwood's NPI number?
- 1295362929. 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 Allison L. Sherwood, 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 | 109 |
|---|---|
| Services billed to Medicare | 288 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)60 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)40 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)36 services
- Destruction of skin growth, 1-14 growths (17110)29 services
- Biopsy of related skin growth, first growth (11102)22 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 cholesterol73%
- High blood pressure61%
- Arthritis46%
- Ischemic heart disease27%
- Osteoporosis27%
- Depression21%
Practice locations
Addresses where Allison L. Sherwood is enrolled with Medicare (CMS data updated October 2, 2026).
- 4630 N Loop 1604, Suite 316San Antonio, TX 78249 (210) 496‑9929
Group practices
Medicare enrollment lists Allison L. Sherwood as a member of this group (CMS data updated October 2, 2026).
- Byron L Limmer MD and Rachel L Limmer MD PA4 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Other clinicians in Byron L Limmer MD and Rachel L Limmer MD PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2024 (2 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295362929 |
| 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