Quick answers
- Does Lynn S. Ashby accept Medicare assignment?
- Yes. Medicare's clinician data says Lynn S. Ashby 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 Lynn S. Ashby see?
- In 2024, CMS data shows 252 Original Medicare patients and 539 services for Lynn S. Ashby. This counts Original Medicare only and measures volume, not quality.
- What is Lynn S. Ashby's NPI number?
- 1275649956. 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 Lynn S. Ashby, 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 | 252 |
|---|---|
| Services billed to Medicare | 539 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)102 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)82 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)78 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)69 services
- Hospital discharge day management, 30 minutes or less (99238)46 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 cholesterol75%
- Stroke or mini-stroke75%
- Arthritis48%
- Ischemic heart disease37%
- Atrial fibrillation32%
Hospitals where Lynn S. Ashby works
Medicare's Facility Affiliation Data lists Lynn S. Ashby at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Mercy Gilbert Medical CenterGilbert, AZ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 030119
- St Josephs Hospital and Medical CenterPhoenix, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030024
- Verde Valley Medical CenterCottonwood, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030007
- Yavapai Regional Medical CenterPrescott, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030012
Practice locations
Addresses where Lynn S. Ashby is enrolled with Medicare (CMS data updated October 2, 2026).
- 500 W Thomas Rd, 680 Dhmg St Joseph'S Pelvic Pain and SurgPhoenix, AZ 85013 (602) 406‑6017
Group practices
Medicare enrollment lists Lynn S. Ashby as a member of this group (CMS data updated October 2, 2026).
- SJHMC Physician Services646 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Phoenix
Clinicians with the same Medicare primary specialty in Phoenix, AZ — not a recommendation.
Other clinicians in SJHMC Physician Services
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 1993 (33 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) | 1275649956 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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