Andrew K. Roorda, MD

Medicare activity in 2024

Official CMS public-use data for Andrew K. Roorda, 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 moderate level of decision making, if using time, 30 minutes or more (99214)184 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)126 services
3. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)121 services
4. Biopsy of large bowel using a flexible endoscope (45380)111 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)93 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%
• Arthritis44%
• Ischemic heart disease41%
• Diabetes29%
• Atrial fibrillation29%

Hospitals where Andrew K. Roorda works

Medicare's Facility Affiliation Data lists Andrew K. Roorda 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.

• El Camino HealthMountain View, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050308
• Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

Addresses where Andrew K. Roorda is enrolled with Medicare (CMS data updated October 2, 2026).

• 2490 Hospital Dr, Suite 211Mountain View, CA 94040 (650) 988‑7530
• 701 E El Camino RealMountain View, CA 94040 (650) 691‑6174

Group practices

Medicare enrollment lists Andrew K. Roorda as a member of this group (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in California →

Other gastroenterologists in Mountain View

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

• Jiayi Li, MD
• Peter W. Simpson, MD
• Sanjay Ramrakhiani, MD
• Erin Libuit, MD
• Aurelia Fu, MD
• Samuel N. Marcus, MD
• Roy Soetikno, MD
• Thomas K. Larson, MD

All gastroenterologists in Mountain View →

Other clinicians in Sutter Bay Medical Foundation

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

• Melissa Goralka, PA
• Anne J. Ziffer, MD
• Bart A. Carey, MD
• Gursharan K. Gill, PA
• Darren W. Don, MD
• Andrew Leung, 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