Tamara G. Grisales, MD

Medicare activity in 2024

Official CMS public-use data for Tamara G. Grisales, 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. Injection, onabotulinumtoxina, 1 unit (J0585)1,140 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)427 services
3. Ultrasound measurement of bladder capacity after voiding (51798)153 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)86 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)78 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 cholesterol75%
• Arthritis63%
• High blood pressure61%
• Osteoporosis38%
• Anxiety28%
• Diabetes26%

Hospitals where Tamara G. Grisales works

Medicare's Facility Affiliation Data lists Tamara G. Grisales 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.

• Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050262
• Santa Monica - UCLA Medical Center & Orthopaedic HospitalSanta Monica, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050112

Practice locations

Addresses where Tamara G. Grisales is enrolled with Medicare (CMS data updated October 2, 2026).

• 200 Medical PlazaLos Angeles, CA 90095 (310) 794‑7274
• 200 Medical Plz, Suite 430Los Angeles, CA 90095 (310) 794‑7274
• 757 Westwood PlzLos Angeles, CA 90095 (310) 825‑9111

Group practices

Medicare enrollment lists Tamara G. Grisales as a member of this group (CMS data updated October 2, 2026).

• The Regents of the University of California56 clinicians in the group

Specialties

• Undefined Physician Type (Specify)primary
• Obstetrics/Gynecologyalso

Find other Undefined Physician Type (Specify) doctors in California →

Other physicians in Los Angeles

Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.

• Alexander Kuo, MD
• Fariba Goodarzian, MD
• Neha H. Mirchandani, MD
• Donald J. Lucas, MD
• Pouriya Ghayoumi, MD
• Eric Darvish
• Sanjay P. Sinha, MD

All physicians in Los Angeles →

Other clinicians in The Regents of the University of California

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

• Angela Y. Chen, MD
• Yalda Afshar, MD
• Daniel S. Lee, MD
• Radhika D. Rible, MD
• Tina A. Nguyen, MD
• Andrea Rapkin, 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