Dr. Brian Peter First, MD

Dr. First practices at Ritchken And First Medical Group in San Diego, California.

Dr. First's NPI, 1770531816, was assigned on May 4, 2006. Dr. First graduated from University of the Witwatersrand in 1973. Dr. First's California license number on file is A33952.

Dr. First's primary practice is Ritchken and First Medical Group, at 4282 Genesee Ave Suite 103 Suite 103, San Diego, CA 92117-4961. The practice phone is (858) 292-0108.

Dr. First's primary practice is Ritchken And First Medical Group in San Diego, California. Dr. First is also affiliated with Sharp Memorial Hospital. The medical group on file is Ritchken and First, MDs. Dmand AI also links Dr. First to 2 more hospitals and 5 home health agencies, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. First practices, 9 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. First's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. First is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. First's licenses on file in 2 states: California and Georgia.

Dmand AI lists acid reflux, acute gastroduodenitis, acute sinusitis, acute skin infection, adjustment disease, aneurysm, arthritis and asthma among the conditions Dr. First treats.

CMS data shows 7,841 Medicare services from Dr. First across 19 procedure codes in 2024, for 618 Medicare patients. Medicare paid $235,960 for them. Every service was in an office.

CMS counts 618 Medicare patients who saw Dr. First in 2024. The largest group is 75 to 84, with 226 patients. 73% of them have high cholesterol, and 67% have high blood pressure. 21% are also on Medicaid. Their average risk score is 1.10, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. First's median patient age at 68, with 58% women.

In 2024, Dr. First wrote 8,160 Medicare Part D claims for 688 patients. 76% of them were for generic drugs. CMS names the drug for 7,328 of them, across 149 drugs with 11 or more claims each, at $1,311,161 in total drug cost. In 2023, CMS named 7,413 claims across 157 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 19 out of 100 for Dr. First for performance year 2024, reported individually. Dr. First accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. First as offering telehealth. CMS counts 16 procedures of removal of tissue by Dr. First, more than 67% of the clinicians it reports for that procedure.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

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

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 1,092 general payments to Dr. First from 85 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 75% of the total. Pfizer Inc. paid the most, $7,065. It also lists 1 research payment totaling $2,866 in 2019.

Dr. First graduated from University of the Witwatersrand in 1973.

Dr. First is in network with 16 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.