Annamalai Veerappan, MD

Medicare activity in 2024

Official CMS public-use data for Annamalai Veerappan, 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)227 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)196 services
3. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)94 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)83 services
5. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)53 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%
• Diabetes43%
• Arthritis41%
• Chronic kidney disease27%
• Ischemic heart disease26%

Hospitals where Annamalai Veerappan works

Medicare's Facility Affiliation Data lists Annamalai Veerappan 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.

• Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
• Washington HospitalFremont, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050195

Practice locations

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

• 2557 Mowry AveFremont, CA 94538
• 39500 Fremont Blvd, Suite 100Fremont, CA 94538 (510) 687‑9510

Group practices

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

• Washington Township Medical Foundation117 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in California →

Other gastroenterologists in Fremont

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

• Sukhwinder Sandhu, MD
• Mary Y. Hu, MD
• Ramakrish P. Gollapudi, MD
• Prashant Kotwani, MD
• Shakir A. Hyder, MD
• Kenneth A. Kelsen, MD
• Rachel Feder, MD
• Mai Dao, MD

All gastroenterologists in Fremont →

Other clinicians in Washington Township Medical Foundation

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

• Alissa R. Erogbogbo, MD
• Sangeetha L. Balakrishnan, MD
• Chet A. Morrison, MD
• Jason Chu, MD
• Steven A. Curran, MD
• Seema Sehgal, 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