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

Mark Dy-Liacco, MD

Individual provider Surgical Critical Care Physician · NPI 1366488850

Mark Dy-Liacco, MD is a General Surgery in Pleasanton, California. Graduated from Medical College of Wisconsin in 1992, 34 years ago. Practices with House Medicine, a 9-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Trained at
Medical College of Wisconsin
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

5555 W Las Positas Blvd
Pleasanton, CA 94588-4000
Phone: (925) 416-3440
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence G192769 (CA)
Surgical Critical Care Physician Taxonomy 2086S0102X · Licence G192769 (CA)

Record details

NPI number1366488850
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 21, 2006
Last updated in NPPESJanuary 14, 2025
Certification dateJanuary 14, 2025

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1992 (34 years in practice)
Group practice House Medicine — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare