NPI registry status
Active
2026 NPPES data Acute Care Nurse Practitioner NPI 1942467519 FNP
Verify on CMS → Theresa O' Hair, FNP
Acute Care Nurse Practitioner in Oroville, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 24,697 in Acute Care Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
3K
Medicare Part D claims · 277 beneficiaries · Acute Care Nurse Practitioner avg: 576
Generic prescribing
78%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$984.79
45 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Theresa O' Hair, FNP filed 3,219 Medicare Part D claims in 2023 as an Acute Care Nurse Practitioner in Oroville, California, prescribing 78% generic.
- 3K
- Part D claims, 2023
- 78%
- generic prescribing
- $984.79
- industry payments (Sunshine Act)
- ≥89th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Theresa O' Hair, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,219 ≥ 89th percentile 89% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Theresa O' Hair, FNP?
Quality data not reportedPrimary specialty
Acute Care Nurse Practitioner
Medicare Part D claims
3,219 6× vs specialty avg
Specialty distribution in California
How Acute Care Nurse Practitioner compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Acute Care Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Theresa O' Hair, FNP appears in the CMS NPPES registry as an Acute Care Nurse Practitioner provider holding FNP credentials at 2721 OLIVE HWY, Oroville, CA, 95966, with a listed phone of (530) 533-1554. NPI 1942467519 was issued on 05/20/2008.
Medicare Part D records for calendar year 2023 show 3,219 prescription claims written by this provider, covering 277 Medicare beneficiaries and totaling roughly $456K in drug spend, split 21% brand-name and 78% generic by claim count, with an opioid prescribing rate of 1.4%.
Acute Care Nurse Practitioner is a mid-sized specialty nationwide, with 24,697 enrolled providers across 53 states and an average of 576 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1942467519 |
|---|---|
| Specialty | Acute Care Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 05/20/2008 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Theresa O' Hair, FNP. Source: openpaymentsdata.cms.gov.
Total received
$985
Largest payer
Merck Sharp & Dohme LLC
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Theresa O' Hair, FNP. To verify Theresa O' Hair, FNP's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Theresa O' Hair, FNP - brand share 21.0%
Acute Care Nurse Practitioner average
21% brand-name claims vs 78% generic, on 3,219 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
3,219
Total Claims
$456K
Total Drug Cost
277
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,635
- Total Day Supply
- 163,358
- Brand vs Generic
- 21% brand / 78% generic
- Brand Drug Cost
- $389K
- Generic Drug Cost
- $66K
- Opioid Claims
- 46 (1.4% rate)
- Antibiotic Claims
- 58
Patient Demographics
- Average Patient Age
- 67.2 years
- Avg HCC Risk Score
- 1.47
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 83, 65-74: 126, 75-84: 57, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Theresa O' Hair, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
212 claims
- Lisinopril
Lisinopril
188 claims
- Levothyroxine Sodium
Levothyroxine Sodium
144 claims
- Metformin Hcl
Metformin Hcl
134 claims
- Amlodipine Besylate
Amlodipine Besylate
121 claims
- Montelukast Sodium
Montelukast Sodium
87 claims
- Metoprolol Succinate 73
Metoprolol Succinate
73 claims
- Jardiance 65
Jardiance
65 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 212 |
| Lisinopril | 188 |
| Levothyroxine Sodium | 144 |
| Metformin Hcl | 134 |
| Amlodipine Besylate | 121 |
| Montelukast Sodium | 87 |
| Metoprolol Succinate | 73 |
| Jardiance Empagliflozin | 65 |
| Fluticasone Propionate | 63 |
| Omeprazole | 57 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Acute Care Nurse Practitioner Overview
How Theresa O' Hair, FNP fits within the Acute Care Nurse Practitioner landscape nationally.
24,697
Acute Care Nurse Practitioner Providers in US
53
States with Acute Care Nurse Practitioner
576
Avg Claims per Provider
Theresa O' Hair, FNP's 3,219 claims are above the specialty average of 576.
Nearby Acute Care Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as O' Hair.
Jessica Aaronson
Lynwood, CA
Dr. Naima Abdirahman
NP
Long Beach, CA
Dr. Jenna Abeloe
NP
Ventura, CA
Rhonald Abitona
San Francisco, CA
Dr. Tara Abrams
NP
Los Angeles, CA
Compare Acute Care Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Acute Care Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Theresa O' Hair, FNP's specialty? ▼
Theresa O' Hair, FNP specializes in Acute Care Nurse Practitioner and practices in Oroville, California. Credentials: FNP.
How much does Theresa O' Hair, FNP prescribe under Medicare Part D? ▼
In 2023, Theresa O' Hair, FNP wrote 3,219 Medicare Part D claims totaling $456K in drug costs for 277 beneficiaries.
Where is Theresa O' Hair, FNP located? ▼
Theresa O' Hair, FNP is located at 2721 OLIVE HWY, Oroville, CA, 95966. Phone: (530) 533-1554.
What is Theresa O' Hair, FNP's NPI number? ▼
Theresa O' Hair, FNP's National Provider Identifier (NPI) is 1942467519, issued on 05/20/2008.
Does Theresa O' Hair, FNP prescribe more brand-name or generic drugs? ▼
Theresa O' Hair, FNP's prescribing is 21% brand-name and 78% generic drugs by claim count, with $389K in brand drug costs.
Does Theresa O' Hair, FNP prescribe opioids? ▼
Yes, Theresa O' Hair, FNP had 46 opioid claims in 2023 with an opioid prescribing rate of 1.4%.
How many Acute Care Nurse Practitioner providers are there in the US? ▼
There are 24,697 Acute Care Nurse Practitioner providers across 53 states in the US. The average Acute Care Nurse Practitioner provider writes 576 Medicare Part D claims per year.
What drugs does Theresa O' Hair, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Theresa O' Hair, FNP's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Theresa O' Hair, FNP accept Medicare? ▼
Theresa O' Hair, FNP appears in CMS Medicare data with 3,219 Part D claims and 277 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Theresa O' Hair, FNP's credentials? ▼
Theresa O' Hair, FNP's NPI is 1942467519 with credentials FNP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.