Dr. Stephen Lloyd Catalya, MD

Dr. Catalya practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.

Dr. Catalya's NPI, 1881100832, was assigned on December 28, 2017. Dr. Catalya graduated from St. George's University School of Medicine in 2014. Dr. Catalya's California license number on file is A153090.

Dr. Catalya's primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.

Dr. Catalya's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dr. Catalya is also affiliated with Concord Medical Center. The medical group on file is Epic Care. Dmand AI also links Dr. Catalya to 1 more hospital, 2 group practices and clinics and 2 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Catalya practices, 5 sites in all. Vendor and product names are available with a free account.

Infectious disease is Dr. Catalya's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Catalya is board certified in infectious disease by the American Board of Internal Medicine. Dmand AI has Dr. Catalya's licenses on file in 2 states: California and New Jersey.

Dmand AI lists joint or bone infection and pneumonia among the conditions Dr. Catalya treats.

CMS data shows 1,584 Medicare services from Dr. Catalya across 4 procedure codes in 2024, for 298 Medicare patients. Medicare paid $175,796 for them.

CMS counts 298 Medicare patients who saw Dr. Catalya in 2024. The largest group is 75 to 84, with 92 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 47% are also on Medicaid. Their average risk score is 3.31, 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. Catalya's median patient age at 65, with 43% women.

In 2024, Dr. Catalya wrote 22 Medicare Part D claims. 95% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $80 in total drug cost. In 2019, CMS named 13 claims across 1 drug.

Dr. Catalya accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Catalya as offering telehealth.

Dmand AI links 2 papers to Dr. Catalya in 2017. Dr. Catalya's most frequent co-authors are Shuvendu Sen, MD, Sunil Tulpule, MD and Sabrina Khaleeq Arshed, MD.

CMS Open Payments shows 20 general payments to Dr. Catalya from 7 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 97% of the total. Merck Sharp & Dohme Corporation paid the most, $228.

Dr. Catalya graduated from St. George's University School of Medicine in 2014.

Dr. Catalya is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.