Ana Carolina C. Monteiro, MD

Medicare activity in 2024

Official CMS public-use data for Ana Carolina C. Monteiro, 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)148 services
2. Test to examine how well the lungs exchange gases (94729)54 services
3. Critical care, first 30-74 minutes (99291)42 services
4. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)38 services
5. Test to measure expiratory airflow and volume changes before and after medication administration (94060)35 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%
• Arthritis70%
• Ischemic heart disease58%
• COPD53%
• Anxiety40%

Hospitals where Ana Carolina C. Monteiro works

Medicare's Facility Affiliation Data lists Ana Carolina C. Monteiro 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
• UCLA West Valley Medical CenterWest Hills, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050481

Practice locations

Addresses where Ana Carolina C. Monteiro is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

• 100 Moody Ct, Suite 200Thousand Oaks, CA 91360 (805) 418‑3500
• 15503 Ventura BlvdEncino, CA 91436 (818) 461‑8148
• 19950 Rinaldi StPorter Ranch, CA 91326
• 2020 Santa Monica Blvd, Suite 210Santa Monica, CA 90404 (310) 458‑2381
• 215 W Janss RdThousand Oaks, CA 91360 (805) 497‑2727

Group practices

Medicare enrollment lists Ana Carolina C. Monteiro 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

• Pulmonary Diseaseprimary
• Critical Care (Intensivists)also
• Internal Medicinealso

Find other Pulmonary Disease doctors in California →

Other pulmonologists in Thousand Oaks

Clinicians with the same Medicare primary specialty in Thousand Oaks, CA — not a recommendation.

• Shahriar Ghodsian, MD
• Jonathan J. Chan, MD
• Tamana Ahmadi, MD
• Andres E. Giron, MD
• Maryum H. Merchant, MD
• Samuel P. Haslam, MD
• Catalin Nicola, MD
• Christopher Miller, MD

All pulmonologists in Thousand Oaks →

Other clinicians in The Regents of the University of California

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

• Daniel H. Silverman, MD
• Andrew Quon, MD
• Ali Nsair, MD
• Maryam Sharifi, MD
• Mona Rezapour, MD
• Allison Diamant, 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