Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Lenna Alessandra Martyak, MD

Individual provider Gastroenterology Physician · NPI 1164638177

Dr. Lenna Alessandra Martyak, MD is a Gastroenterology in Santa Monica, California. Graduated from Georgetown University School of Medicine in 2002, 24 years ago. Practices with Providence Saint Johns Medical Foundation, a 285-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
24
Trained at
Georgetown University School of Medicine
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1301 20th St Ste 280
Santa Monica, CA 90404-2053
Phone: (310) 829-6789
Fax: (310) 935-3163
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence A87515 (CA)

Record details

NPI number1164638177
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 15, 2007
Last updated in NPPESSeptember 14, 2021
Certification dateSeptember 14, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Providence Saint Johns Medical Foundation — 285 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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