Quick answers
- Does Christy Rainey accept Medicare assignment?
- Yes. Medicare's clinician data says Christy Rainey 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 Christy Rainey see?
- In 2024, CMS data shows 451 Original Medicare patients and 2,973 services for Christy Rainey. This counts Original Medicare only and measures volume, not quality.
- What is Christy Rainey's NPI number?
- 1790999100. 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 Christy Rainey, 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 | 451 |
|---|---|
| Services billed to Medicare | 2,973 |
| Different services or procedures | 51 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)383 services
- Ultrasonic guidance for placement of radiation therapy fields (G6001)263 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)255 services
- Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)247 services
- Superficial and/or low voltage radiation treatment delivery (77401)238 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 pressure71%
- Arthritis44%
- Diabetes27%
- Ischemic heart disease24%
- Chronic kidney disease24%
Practice locations
Addresses where Christy Rainey is enrolled with Medicare (CMS data updated October 2, 2026).
- 4118 McCullough AveSan Antonio, TX 78212 (210) 901‑9353
Group practices
Medicare enrollment lists Christy Rainey as a member of this group (CMS data updated October 2, 2026).
- Downtown Dermatology PLLC4 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 Downtown Dermatology PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Kansas City, School Of Medicine |
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1790999100 |
| 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