Dr. Sarathy Thondanur Mandayam, MD

Dr. Mandayam practices at Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins.

Dr. Mandayam's NPI, 1518911023, was assigned on May 20, 2006. Dr. Mandayam graduated from OU College of Medicine in 1994. Dr. Mandayam holds California license A055910.

Dr. Mandayam's primary practice is Hazel Hawkins Memorial Hospital, at 911 Sunset Drive, Hollister, CA 95032 in Santa Clara County. The practice phone is (831) 637-5711.

Dr. Mandayam's primary practice is Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins. The medical group on file is Hazel Hawkins Memorial Hospital. Dmand AI also links Dr. Mandayam to 2 more medical groups and 1 community health center, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mandayam practices, 2 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Mandayam's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Mandayam is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Mandayam is licensed in California.

Dmand AI lists acid reflux and cirrhosis of the liver among the conditions Dr. Mandayam treats.

CMS data shows 184 Medicare services from Dr. Mandayam across 7 procedure codes in 2024, for 128 Medicare patients. Medicare paid $16,953 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 128 Medicare patients who saw Dr. Mandayam in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 88% are also on Medicaid. Their average risk score is 1.93, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Mandayam's median patient age at 57, with 54% women.

In 2024, Dr. Mandayam wrote 162 Medicare Part D claims for 112 patients. 62% of them were for generic drugs. CMS names the drug for 115 of them, across 4 drugs with 11 or more claims each, at $19,648 in total drug cost. In 2023, CMS named 25 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Mandayam for performance year 2024, reported as part of a group. Dr. Mandayam accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 37 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Mandayam, more than 59% of the clinicians it reports for that procedure.

Dmand AI links 4 papers to Dr. Mandayam, published from 2006 to 2007. The most frequent topics are Anti-Inflammatory Agents, Non-Steroidal, Indomethacin and Microtubule-Associated Proteins. Dr. Mandayam's most frequent co-author is Richard Hao Huang, MD.

CMS Open Payments shows 55 general payments to Dr. Mandayam from 8 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 52% of the total. Boston Scientific Corporation paid the most, $2,784.

Dr. Mandayam graduated from OU College of Medicine in 1994.

Dr. Mandayam is in network with 3 carriers, including CMS Medicare, Humana and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.