Quick answers
- Does Rachael M. Stillwagon accept Medicare assignment?
- Yes. Medicare's clinician data says Rachael M. Stillwagon 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 Rachael M. Stillwagon see?
- In 2024, CMS data shows 234 Original Medicare patients and 12,660 services for Rachael M. Stillwagon. This counts Original Medicare only and measures volume, not quality.
- What is Rachael M. Stillwagon's NPI number?
- 1437174208. 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 Rachael M. Stillwagon, 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 | 234 |
|---|---|
| Services billed to Medicare | 12,660 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, immune globulin, (gamunex-c/gammaked), non-lyophilized (e.g., liquid), 500 mg (J1561)8,390 services
- Test for allergy using allergenic extract (95004)2,923 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)216 services
- Infusion into a vein for therapy, prevention, or diagnosis, each additional hour (96366)161 services
- Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)117 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 pressure64%
- Arthritis57%
- Asthma41%
- Anxiety26%
- Ischemic heart disease25%
Practice locations
Addresses where Rachael M. Stillwagon is enrolled with Medicare (CMS data updated October 2, 2026).
- 10200 N 92nd St, Suite 130Scottsdale, AZ 85258 (602) 949‑7377
- 7514 E Monterey Way, Suite 1Scottsdale, AZ 85251 (480) 949‑7377
Group practices
Medicare enrollment lists Rachael M. Stillwagon as a member of this group (CMS data updated October 2, 2026).
- Allergy, Asthma and Immunology Associates Ltd8 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Scottsdale
Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.
Other clinicians in Allergy, Asthma and Immunology Associates Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1437174208 |
| 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