Natalia Colocci, MD

Medicare activity in 2024

Official CMS public-use data for Natalia Colocci, 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, pembrolizumab, 1 mg (J9271)6,200 services
2. Injection, daratumumab, 10 mg and hyaluronidase-fihj (J9144)5,400 services
3. Injection, fosaprepitant, 1 mg (J1453)3,450 services
4. Injection, immune globulin (privigen), intravenous, non-lyophilized (e.g., liquid), 500 mg (J1459)1,980 services
5. Injection, ondansetron hydrochloride, per 1 mg (J2405)808 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 cholesterol68%
• High blood pressure60%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)56%
• Arthritis38%
• Osteoporosis35%
• Ischemic heart disease19%

Hospitals where Natalia Colocci works

Medicare's Facility Affiliation Data lists Natalia Colocci 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.

• Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050007

Practice locations

Addresses where Natalia Colocci is enrolled with Medicare (CMS data updated October 2, 2026).

• 123 S San Mateo DrSan Mateo, CA 94401 (650) 343‑4200
• 50 S San Mateo DrSan Mateo, CA 94401 (650) 652‑8500
• 50 S San Mateo Dr, Level 3San Mateo, CA 94401 (650) 652‑8500
• 795 El Camino RealPalo Alto, CA 94301 (415) 600‑1020

Group practices

Medicare enrollment lists Natalia Colocci as a member of this group (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Hematology/Oncologyprimary
• Radiation Oncologyalso

Find other Hematology/Oncology doctors in California →

Other hematologist-oncologists in San Mateo

Clinicians with the same Medicare primary specialty in San Mateo, CA — not a recommendation.

• Julian McLain, MD
• Victoria E. Wang, MD
• Judy M. Cheng, MD
• Tarunpreet Bains, MD
• Eric J. Kuo, MD

All hematologist-oncologists in San Mateo →

Other clinicians in Sutter Bay Medical Foundation

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

• Trinh M. Green, MD
• Allain Edrick G. Francisco, MD
• Izumi Cabrera, MD
• Jonathan Wang, MD
• Jolaine Beal, MD
• Molly A. Kinder, AU

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