Dr. Thomas Maclay Ormiston, MD

Dr. Ormiston practices at Santa Clara Valley Medical Center in San Jose, California, part of County of Santa Clara, CA.

Dr. Ormiston's NPI, 1982709440, was assigned on September 13, 2006. Dr. Ormiston graduated from UCSF School of Medicine in 1997. Dr. Ormiston holds California license A66776.

Dr. Ormiston's primary practice is Santa Clara Valley Medical Center, at 751 South Bascom Avenue, San Jose, CA 95128 in Santa Clara County. The practice phone is (408) 885-5000.

Dr. Ormiston's primary practice is Santa Clara Valley Medical Center in San Jose, California, part of County of Santa Clara, CA. The medical group on file is County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI also links Dr. Ormiston to 1 more community health center, named with a free account.

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

Internal medicine is Dr. Ormiston's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Ormiston is board certified in internal medicine by the American Board of Internal Medicine. Dr. Ormiston is licensed in California.

Dmand AI lists acute respiratory failure, cellulitis, circulatory problems in extremities, congestive heart failure, electrolyte disorders, gastrointestinal bleeding, heart attack and kidney failure among the conditions Dr. Ormiston treats.

CMS data shows 444 Medicare services from Dr. Ormiston across 7 procedure codes in 2024, for 121 Medicare patients. Medicare paid $32,110 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 121 Medicare patients who saw Dr. Ormiston in 2026. The largest group is 65 to 74, with 46 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 79% are also on Medicaid. Their average risk score is 3.00, 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. Ormiston's median patient age at 73, with 46% women.

In 2026, Dr. Ormiston wrote 230 Medicare Part D claims for 58 patients. 85% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $26 in total drug cost.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 61 out of 100 for Dr. Ormiston for performance year 2026, reported as part of a group. Dr. Ormiston accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 9 papers to Dr. Ormiston. The most frequent topics are Randomized Controlled Trials as Topic, Adrenergic beta-Antagonists and Asthma. Dr. Ormiston has published most often in Cochrane Database Syst Rev. Dr. Ormiston's most frequent co-authors are Shelley Ruth Salpeter, MD, Judith M. Walsh, MD and Nicholas Salpeter Buckley, DO.

Dr. Ormiston graduated from UCSF School of Medicine in 1997.

Dr. Ormiston is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.