Quick answers
- Does Jacen T. Knowlton accept Medicare assignment?
- Yes. Medicare's clinician data says Jacen T. Knowlton 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 Jacen T. Knowlton see?
- In 2024, CMS data shows 221 Original Medicare patients and 306 services for Jacen T. Knowlton. This counts Original Medicare only and measures volume, not quality.
- What is Jacen T. Knowlton's NPI number?
- 1558830943. 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 Jacen T. Knowlton, 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 | 221 |
|---|---|
| Services billed to Medicare | 306 |
| Different services or procedures | 55 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)35 services
- Ultrasonic guidance for needle placement (76942)33 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)30 services
- Injection of anesthetic agent and/or steroid into other nerve or branch (64450)17 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)15 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%
- Arthritis61%
- Diabetes38%
- Chronic kidney disease37%
- Ischemic heart disease34%
Hospitals where Jacen T. Knowlton works
Medicare's Facility Affiliation Data lists Jacen T. Knowlton 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.
- Valleywise Health Medical CenterPhoenix, AZ · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: not listed by Medicare · CCN 030022
Practice locations
Addresses where Jacen T. Knowlton is enrolled with Medicare (CMS data updated October 2, 2026).
- 10401 W Thunderbird BlvdSun City, AZ 85351 (623) 832‑4000
- 14502 W Meeker BlvdSun City, AZ 85375 (623) 524‑4000
- 2601 E Roosevelt StPhoenix, AZ 85008 (602) 344‑5011
- 8088 W Whitney DrPeoria, AZ 85345 (602) 655‑2210
Group practices
Medicare enrollment lists Jacen T. Knowlton as a member of these groups (CMS data updated October 2, 2026).
- District Medical Group Inc458 clinicians in the group
- Greater Anesthesia Solutions206 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Arizona →
Other nurse anesthetists in Sun City
Clinicians with the same Medicare primary specialty in Sun City, AZ — not a recommendation.
Other clinicians in District Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558830943 |
| 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