Brett J. Fenson, MD

Medicare activity in 2024

Official CMS public-use data for Brett J. Fenson, 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.

Most frequent services

1. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)172 services
2. Ultrasonic guidance for needle placement (76942)64 services
3. Injection of local anesthetic for abdominal wall pain control on both sides using imaging guidance (64488)62 services
4. Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)29 services
5. Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)29 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%
• Arthritis75%
• Ischemic heart disease40%
• Chronic kidney disease40%
• Anxiety34%

Hospitals where Brett J. Fenson works

Medicare's Facility Affiliation Data lists Brett J. Fenson 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.

• Eisenhower Medical CenterRancho Mirage, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050573

Practice locations

Addresses where Brett J. Fenson is enrolled with Medicare (CMS data updated October 2, 2026).

• 39950 Vista Del SolRancho Mirage, CA 92270 (760) 340‑0053

Group practices

Medicare enrollment lists Brett J. Fenson as a member of this group (CMS data updated October 2, 2026).

• Eisenhower Medical Center456 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in California →

Other anesthesiologists in Rancho Mirage

Clinicians with the same Medicare primary specialty in Rancho Mirage, CA — not a recommendation.

• Kristen L. Dauphinee, MD
• Oksana Bantley, MD
• Albert M. Kelly, DO
• Erin E. Giles, DO
• Kari K. Bancroft, MD
• George R. Bancroft, MD
• Daniel Nelson, MD
• Bobby Yoon, MD

All anesthesiologists in Rancho Mirage →

Other clinicians in Eisenhower Medical Center

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Ruba Alchaikh Hassan, MD
• Joel M. Hirschberg, MD
• Edgar D. Staren, MD
• Seyed A. Bozorgi, MD
• Wendy M. Reitz, NP
• Gregg C. Wolff, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians