Dr. John Anthony Griffin, MD

Dr. Griffin practices at Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church.

Dr. Griffin's NPI, 1821014903, was assigned on July 14, 2006. Dr. Griffin holds Washington license MD60664479.

Dr. Griffin's primary practice is Loma Linda University Medical Center, at 11234 Anderson St, Loma Linda, CA 92354 in San Bernardino County. The practice phone is (909) 558-4000.

Dr. Griffin's primary practice is Loma Linda University Medical Center in Loma Linda, California, part of Seventh-day Adventist Church. Dr. Griffin is also affiliated with Loma Linda University Medical Center - Murrieta. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Griffin to 1 more group practice or clinic, named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Griffin practices, 3 sites in all. Vendor and product names are available with a free account.

Colon and rectal surgery is Dr. Griffin's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dmand AI has Dr. Griffin's licenses on file in 2 states: Washington and Utah.

CMS data shows 218 Medicare services from Dr. Griffin across 8 procedure codes in 2024, for 112 Medicare patients. Medicare paid $24,801 for them.

CMS counts 112 Medicare patients who saw Dr. Griffin in 2024. The largest group is 65 to 74, with 56 patients. 68% of them have high blood pressure, and 67% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.43, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Griffin's median patient age at 62, with 52% women.

In 2024, Dr. Griffin wrote 222 Medicare Part D claims for 116 patients. 80% of them were for generic drugs. CMS names the drug for 150 of them, across 6 drugs with 11 or more claims each, at $4,846 in total drug cost. In 2023, CMS named 124 claims across 6 drugs.

Dr. Griffin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 42 procedures of colonoscopy by Dr. Griffin, more than 60% of the clinicians it reports for that procedure.

Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 4 papers to Dr. Griffin in 2023. The most frequent topics are Rectal Prolapse. Dr. Griffin has published most often in Surg Technol Int. Dr. Griffin's most frequent co-authors are Eric Ming Changchien, MD, Karleigh R. Curfman, MD and Melinda Egan Hawkins, MD.

CMS Open Payments shows 59 general payments to Dr. Griffin from 26 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 58% of the total. Intuitive Surgical, Inc. paid the most, $2,596.