Quick answers
- Does James R. Sundet accept Medicare assignment?
- Yes. Medicare's clinician data says James R. Sundet 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 James R. Sundet see?
- In 2024, CMS data shows 346 Original Medicare patients and 401 services for James R. Sundet. This counts Original Medicare only and measures volume, not quality.
- What is James R. Sundet's NPI number?
- 1306810221. 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 James R. Sundet, 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 | 346 |
|---|---|
| Services billed to Medicare | 401 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for other procedure on urinary system through urethra (00910)152 services
- Anesthesia for procedure on anus and rectum (00902)113 services
- Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope (00918)74 services
- Anesthesia for removal of urinary bladder tumors including use of an endoscope (00912)40 services
- Anesthesia for shock wave therapy for urinary system stones without water bath (00873)12 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 cholesterol72%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)41%
- Arthritis38%
- Diabetes34%
- Chronic kidney disease28%
Practice locations
Addresses where James R. Sundet is enrolled with Medicare (CMS data updated October 2, 2026).
- 361 Town Ctr WSanta Maria, CA 93458 (805) 922‑6581
Group practices
Medicare enrollment lists James R. Sundet as a member of this group (CMS data updated October 2, 2026).
- Santa Maria Gastroenterology Medical Group Inc.22 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), California →
Other nurse anesthetists in Santa Maria
Clinicians with the same Medicare primary specialty in Santa Maria, CA — not a recommendation.
Other clinicians in Santa Maria Gastroenterology Medical Group Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306810221 |
| 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