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

MS. Theresa Anne O' Hair, FNP

Individual provider Acute Care Nurse Practitioner · NPI 1942467519

MS. Theresa Anne O' Hair, FNP is a Nurse Practitioner in Oroville, California. Qualified in 2007, 19 years ago. Practices with Ampla Health, a 106-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Licensed in
CA
In the registry since
2008
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

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Practice location Address checks out

2721 Olive Hwy
Oroville, CA 95966-6115 Not confirmed with CMS for 13 years — call before visiting
Phone: (530) 533-1554
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence 18067 (CA)

Record details

NPI number1942467519
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedMay 20, 2008
Last updated in NPPESOctober 19, 2012

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Ampla Health — 106 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 $1,004 41 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Adventist Health Clearlake Hospital · Clearlake, CA · listed as Adventist Health Clearlake Hospital Inc
  • Oroville Hospital Hospital · Oroville, CA
  • Enloe Health Hospital · Chico, CA
  • Butte Home Health And Hospice Home health agency · Chico, CA

Colleagues at Ampla Health

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 106 clinicians in the practice; 12 are shown here.

Other providers in Oroville