Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Maria Katrina Faustino Villanueva, MD

Individual provider Internal Medicine Physician · NPI 1073019501

Maria Katrina Faustino Villanueva, MD practises Internal Medicine in Walnut Creek, California. Qualified in 2014, 12 years ago. Practices with The Charlotte Hungerford Hospital, a 205-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
12
Licensed in
CA
In the registry since
2018
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

1425 S Main St
Walnut Creek, CA 94596-5318
Phone: (925) 295-4000
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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 C210189 (CA)

Record details

NPI number1073019501
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 3, 2018
Last updated in NPPESOctober 1, 2026
Certification dateOctober 1, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice The Charlotte Hungerford Hospital — 205 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 patients190
Services billed 206 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 The Charlotte Hungerford Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 205 clinicians in the practice; 12 are shown here.

Other providers in Walnut Creek