Christie L. Masters, MD

Medicare activity in 2024

Official CMS public-use data for Christie L. Masters, 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 moderate levelof medical decision making, if using time, at least 50 minutes (99233)658 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)166 services
3. Hospital discharge day management, more than 30 minutes (99239)111 services
4. Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)32 services
5. Advance care planning, first 30 minutes (99497)30 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%
• Arthritis53%
• Chronic kidney disease53%
• Diabetes52%
• Heart failure50%

Hospitals where Christie L. Masters works

Medicare's Facility Affiliation Data lists Christie L. Masters 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.

• Providence Little Company of Mary Medical Center TorranceTorrance, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050353
• Torrance Memorial Medical CenterTorrance, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050351

Practice locations

Addresses where Christie L. Masters is enrolled with Medicare (CMS data updated October 2, 2026).

• 2020 Santa Monica Blvd, Suite 210Santa Monica, CA 90404 (310) 458‑2381

Group practices

Medicare enrollment lists Christie L. Masters as a member of this group (CMS data updated October 2, 2026).

• The Regents of the University of California1,462 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Santa Monica

Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.

• Abdullah M. Firoze Ahmed, MD
• Rikki B. Mullen, MD
• Patrick H. Poquiz, MD
• Nupur Agrawal, MD
• Alex J. Messina, MD
• Kalei R. Hosaka, MD
• Rebecca R. Little, MD
• Lucie P. Brining, MD

All internal medicine doctors in Santa Monica →

Other clinicians in The Regents of the University of California

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

• David D. Kim, MD
• Kevin J. Shamash, MD
• Yaroslav A. Gofnung, MD
• Abdullah M. Firoze Ahmed, MD
• David J. Panek, MD
• Rikki B. Mullen, 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