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

Maria Jesusa Buan Tan, FNP

Individual provider Registered Nurse · NPI 1770098527

Maria Jesusa Buan Tan, FNP is a Nurse Practitioner in Chatsworth, California. Qualified in 2017, 9 years ago. Practices with Horizon Multicare Group Inc, a 26-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Licensed in
CA
In the registry since
2017
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

9301 Oakdale Ave Ste 200
Chatsworth, CA 91311-6538
Phone: (818) 205-0900
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 43830 10th St W, Lancaster, CA 93534-4826 — (661) 494-8600

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 95007997 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 725854 (CA)

Record details

NPI number1770098527
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedDecember 1, 2017
Last updated in NPPESJanuary 12, 2026
Certification dateJanuary 12, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Horizon Multicare Group Inc — 26 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 $530 4 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.

Colleagues at Horizon Multicare Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 26 clinicians in the practice; 12 are shown here.

Other providers in Chatsworth