Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Lilian Siguenza Lao, MD

Individual provider Internal Medicine Physician · NPI 1497059885

Lilian Siguenza Lao, MD practises Internal Medicine in Santa Rosa, California. Graduated from Saint Louis University School of Medicine in 2007, 19 years ago. Practices with Pacific Inpatient Medical Group, a 128-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Trained at
Saint Louis University School of Medicine
Licensed in
CA
In the registry since
2010
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

3325 Chanate Rd
Santa Rosa, CA 95404-1707 Not confirmed with CMS for 12 years — call before visiting
Phone: (707) 576-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A106102 (CA)

Record details

NPI number1497059885
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 29, 2010
Last updated in NPPESJune 25, 2014

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Pacific Inpatient Medical Group — 128 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients421
Services billed 1,084 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Pacific Inpatient Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 128 clinicians in the practice; 12 are shown here.

Other providers in Santa Rosa