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

Individual provider Psychiatry Physician · NPI 1497956320

Lovella Caluya-Diaz, MD practises Psychiatry in San Mateo, California. Graduated from New York Medical College in 1993, 33 years ago. Works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
33
Trained at
New York Medical College
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

1950 Alameda De Las Pulgas
San Mateo, CA 94403-1222
Phone: (650) 385-9479
Fax: (650) 349-0476
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 150 W 20th Ave, San Mateo, CA 94403-1341 — (650) 573-2421

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A060314 (CA)

Record details

NPI number1497956320
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 29, 2007
Last updated in NPPESDecember 9, 2020
Certification dateDecember 9, 2020

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Also practisesNEUROPSYCHIATRY
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 1993 (33 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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 patients11
Services billed 72 a service is one billed item, such as a visit, a test or a procedure
Average patient age64

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $250 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

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