Dr. Lenna Alessandra Martyak, MD

Dr. Martyak practices at Endoscopy Center of Southern California LLC in Santa Monica, California.

Dr. Martyak's NPI, 1164638177, was assigned on May 15, 2007. Dr. Martyak graduated from Georgetown University School Of Medicine in 2002. Dr. Martyak holds California license A87515.

Dr. Martyak's primary practice is Endoscopy Center of Southern California LLC, at 2306 Santa Monica Blvd, Santa Monica, CA 90404 in Los Angeles County. The practice phone is (310) 453-4477.

Dr. Martyak's primary practice is Endoscopy Center of Southern California LLC in Santa Monica, California. Dr. Martyak is also affiliated with Providence Saint John's Health Center. The medical group on file is Saint John's Physician Partners. Dmand AI also links Dr. Martyak to 4 more group practices and clinics and 3 medical groups, each named with a free account.

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

Gastroenterology is Dr. Martyak's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Martyak is licensed in California.

Dmand AI lists acid reflux, acute gastroduodenitis, acute stomach ulcer, chronic indigestion, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy and gastroduodenitis among the conditions Dr. Martyak treats.

CMS data shows 1,357 Medicare services from Dr. Martyak across 16 procedure codes in 2024, for 666 Medicare patients. Medicare paid $149,255 for them.

CMS counts 666 Medicare patients who saw Dr. Martyak in 2024. The largest group is 65 to 74, with 309 patients. 75% of them have high cholesterol, and 63% have high blood pressure. 10% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Martyak's median patient age at 60, with 78% women.

In 2024, Dr. Martyak wrote 1,483 Medicare Part D claims for 350 patients. 80% of them were for generic drugs. CMS names the drug for 1,252 of them, across 27 drugs with 11 or more claims each, at $1,021,278 in total drug cost. In 2023, CMS named 950 claims across 23 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Martyak for performance year 2024, reported as part of a group. Dr. Martyak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Martyak as offering telehealth. CMS counts 120 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Martyak, more than 80% of the clinicians it reports for that procedure.

Dmand AI links 1 paper to Dr. Martyak.

CMS Open Payments shows 773 general payments to Dr. Martyak from 49 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $4,704.

Dr. Martyak graduated from Georgetown University School Of Medicine in 2002.

Dr. Martyak is in network with 15 carriers, including Aetna, United Healthcare and Elevance. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.