Luciano Custo Greig, MD

Medicare activity in 2024

Official CMS public-use data for Luciano Custo Greig, 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. Imaging of retina (92134)72 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)30 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)24 services
4. Injection of drug into eye (67028)21 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%
• Arthritis39%
• Diabetes33%
• Chronic kidney disease33%
• Ischemic heart disease30%

Hospitals where Luciano Custo Greig works

Medicare's Facility Affiliation Data lists Luciano Custo Greig 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.

• UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050454

Practice locations

Addresses where Luciano Custo Greig is enrolled with Medicare (CMS data updated October 2, 2026).

• 3100 San Pablo AveBerkeley, CA 94702 (510) 985‑5020
• 400 Parnassus AveSan Francisco, CA 94143

Group practices

Medicare enrollment lists Luciano Custo Greig as a member of this group (CMS data updated October 2, 2026).

• UCSF Medical Group Business Services1,598 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in California →

Other ophthalmologists in Berkeley

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

• Frank L. Brodie, MD
• Jonathan Lu, MD
• Tara Starr, MD
• Jacque L. Duncan, MD
• Zaynabsadat L. Sajjadi, MD
• Yue Zhao, MD
• Andrew L. Sorenson, MD
• Rebecca S. Janik, MD

All ophthalmologists in Berkeley →

Other clinicians in UCSF Medical Group Business Services

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

• Robert Kiningham, MD
• Jenna L. Strelo, NP
• Khushali Shah, MD
• Thomas Nelson, MD
• Frank L. Brodie, MD
• Celso Q. Huiso, NP

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