Quick answers
- Does Joanna Sawyer accept Medicare assignment?
- Yes. Medicare's clinician data says Joanna Sawyer 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 Joanna Sawyer see?
- In 2024, CMS data shows 212 Original Medicare patients and 247 services for Joanna Sawyer. This counts Original Medicare only and measures volume, not quality.
- What is Joanna Sawyer's NPI number?
- 1942258066. 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 Joanna Sawyer, 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 | 212 |
|---|---|
| Services billed to Medicare | 247 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for lens surgery (00142)57 services
- Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)12 services
- Anesthesia for other procedure on skin, muscles, or nerves of head, neck, and upper back (00300)11 services
- Anesthesia for other procedure on upper abdomen (00790)11 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%
- Arthritis49%
- Diabetes36%
- Chronic kidney disease32%
- Ischemic heart disease28%
Hospitals where Joanna Sawyer works
Medicare's Facility Affiliation Data lists Joanna Sawyer 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.
- Banner Heart HospitalMesa, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 030105
- City of Hope Cancer Center PhoenixGoodyear, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 030138
- MercyOne Des Moines Medical CenterDes Moines, IA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 160083
- Saint Joseph HospitalDenver, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060028
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230038
Practice locations
Addresses where Joanna Sawyer is enrolled with Medicare (CMS data updated October 2, 2026).
- 1111 6th AveDes Moines, IA 50314 (515) 247‑3121
- 1375 E 19th Ave, Saint Joseph HospitalDenver, CO 80218 (303) 812‑6400
- 14200 W Celebrate Life WayGoodyear, AZ 85338 (855) 761‑0074
- 1755 59th PlWest Des Moines, IA 50266 (515) 358‑8000
- 6750 E Baywood AveMesa, AZ 85206 (480) 854‑5000
Group practices
Medicare enrollment lists Joanna Sawyer as a member of these groups (CMS data updated October 2, 2026).
- Cep America - Anesthesia PC849 clinicians in the group
- Banner Hospital Based Physicians Arizona LLC637 clinicians in the group
- Hospitalist Medicine Physicians of Colorado - Denver PC92 clinicians in the group
- Premier Anesthesia of Arizona PC31 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Des Moines
Clinicians with the same Medicare primary specialty in Des Moines, IA — not a recommendation.
Other clinicians in Cep America - Anesthesia PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Aurora |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942258066 |
| 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