Gina L. Serraiocco, MD

Medicare activity in 2024

Official CMS public-use data for Gina L. Serraiocco, 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. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)503 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)98 services
3. Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)38 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)34 services
5. 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)13 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 cholesterol71%
• High blood pressure49%
• Arthritis49%
• Anxiety45%
• Osteoporosis33%
• Depression28%

Practice locations

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

• 123 S San Mateo DrSan Mateo, CA 94401 (650) 343‑4200
• 301 Industrial RdSan Carlos, CA 94070

Group practices

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

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Mateo

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

• Michael McCarthy, MD
• Evelyn V. Haddad, MD
• Sunye K. Vuong, MD
• Heidi M. Stroessner Johnson, MD
• Mundeep S. Chawla, MD
• Haarika Srinath, MD
• Alexander T. Yu, MD
• Allen K. Tong, MD

All internal medicine doctors in San Mateo →

Other clinicians in Sutter Bay Medical Foundation

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

• Lisa L. Kinoshita, MD
• Brad Naylor, DPM
• Bradley A. Zlotnick, MD
• Mark J. Cruz, OT
• Kushal Chhabra, MD
• Radhika V. Madhavan, 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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
4. Medicare Care Compare — official Medicare tool to look up clinicians