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

Thais Marek, FNP

Individual provider Nurse Practitioner · NPI 1972087658

Thais Marek, FNP is a Nurse Practitioner in Grass Valley, California. Qualified in 2018, 8 years ago. Practices with Chapa-De Indian Health Program, Inc, a 53-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
8
Licensed in
CA
In the registry since
2018
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

155 Glasson Way
Grass Valley, CA 95945-5723
Phone: (530) 274-6000
Show map & directions

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

Additional practice locations (1)

  • 2211 Lomas Blvd Ne, Albuquerque, NM 87106-2719 — (505) 272-2111

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 95009276 (CA)
Nurse Practitioner Taxonomy 363L00000X · Licence 95009276 (CA)

Record details

NPI number1972087658
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedSeptember 19, 2018
Last updated in NPPESSeptember 11, 2020
Certification dateSeptember 11, 2020

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Chapa-De Indian Health Program, Inc. — 53 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 patients19
Services billed 33 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

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 Chapa-De Indian Health Program, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 53 clinicians in the practice; 12 are shown here.

Other providers in Grass Valley