NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1326588344 FNP, RN
Verify on CMS → Dayna Iverson, FNP, RN
Registered Nurse in Oakdale, 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 177,204 in Registered Nurse, 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 · 122 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
79%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$951.06
48 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Dayna Iverson, FNP, RN filed 2,869 Medicare Part D claims in 2023 as a Registered Nurse in Oakdale, California, prescribing 79% generic.
- 3K
- Part D claims, 2023
- 79%
- generic prescribing
- $951.06
- industry payments (Sunshine Act)
- ≥88th
- 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.
CMS NPPES provider registry desk
NPI 1326588344 · Registered Nurse
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1326588344
- ENUM-RECENT 2017
- TAX-MEGA 177K Registered Nurse
- RX-MID 2,869
- BOOK-MID 15,601 in California
- PHOTO-ENUM Talena Geer · 2017
Dayna Iverson, FNP, RN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,869 ≥ 88th percentile 88% 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 Dayna Iverson, FNP, RN?
Quality data not reportedPrimary specialty
Registered Nurse
Medicare Part D claims
2,869 187% vs specialty avg
Specialty distribution in California
How Registered Nurse 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 Registered Nurse. 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).
Practice Address
Provider Details
| NPI | 1326588344 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | FNP, RN |
| Gender | Female |
| NPI Issued | 02/24/2017 |
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 Dayna Iverson, FNP, RN. Source: openpaymentsdata.cms.gov.
Total received
$951
Largest payer
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
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 Dayna Iverson, FNP, RN. To verify Dayna Iverson, FNP, RN'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
Dayna Iverson, FNP, RN - brand share 19.0%
Registered Nurse average
19% brand-name claims vs 79% generic, on 2,869 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.
2,869
Total Claims
$545K
Total Drug Cost
122
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,717
- Total Day Supply
- 103,533
- Brand vs Generic
- 19% brand / 79% generic
- Brand Drug Cost
- $499K
- Generic Drug Cost
- $44K
- Opioid Claims
- 56 (2.0% rate)
- Antibiotic Claims
- 90
Patient Demographics
- Average Patient Age
- 66.8 years
- Avg HCC Risk Score
- 1.11
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 35, 65-74: 60, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Dayna Iverson, FNP, RN prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
124 claims
- Omeprazole
Omeprazole
121 claims
- Amlodipine Besylate
Amlodipine Besylate
101 claims
- Metformin Hcl
Metformin Hcl
100 claims
- Lisinopril
Lisinopril
91 claims
- Farxiga
Farxiga
85 claims
- Metoprolol Succinate
Metoprolol Succinate
78 claims
- Ibuprofen
Ibuprofen
55 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 124 |
| Omeprazole | 121 |
| Amlodipine Besylate | 101 |
| Metformin Hcl | 100 |
| Lisinopril | 91 |
| Farxiga Dapagliflozin Propanediol | 85 |
| Metoprolol Succinate | 78 |
| Ibuprofen | 55 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 54 |
| Gabapentin | 53 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Dayna Iverson, FNP, RN fits within the Registered Nurse landscape nationally.
177,204
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider
Dayna Iverson, FNP, RN's 2,869 claims are above the specialty average of 1,000.
Nationwide Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Iverson, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2017)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Registered Nurse Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Iverson.
One of 15,601 Registered Nurse providers enrolled in California, 5 are shown here.
Dr. Patricia A Onyango
RN
Modesto, CA
Dr. Adelaida A Zavala
RN
Ontario, CA
Dr. Anu Aaltonen-Bond
RN
Rancho Cordova, CA
Victoria Aardappel
Chico, CA
Dr. Denise Aaron
RN
San Diego, CA
Compare Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is Dayna Iverson, FNP, RN's specialty? ▼
Dayna Iverson, FNP, RN specializes in Registered Nurse and practices in Oakdale, California. Credentials: FNP, RN.
How much does Dayna Iverson, FNP, RN prescribe under Medicare Part D? ▼
In 2023, Dayna Iverson, FNP, RN wrote 2,869 Medicare Part D claims totaling $545K in drug costs for 122 beneficiaries.
Where is Dayna Iverson, FNP, RN located? ▼
Dayna Iverson, FNP, RN is located at 190 S OAK AVE, Oakdale, CA, 95361. Phone: (209) 848-8410.
What is Dayna Iverson, FNP, RN's NPI number? ▼
Dayna Iverson, FNP, RN's National Provider Identifier (NPI) is 1326588344, issued on 02/24/2017.
Does Dayna Iverson, FNP, RN prescribe more brand-name or generic drugs? ▼
Dayna Iverson, FNP, RN's prescribing is 19% brand-name and 79% generic drugs by claim count, with $499K in brand drug costs.
Does Dayna Iverson, FNP, RN prescribe opioids? ▼
Yes, Dayna Iverson, FNP, RN had 56 opioid claims in 2023 with an opioid prescribing rate of 2.0%.
How many Registered Nurse providers are there in the US? ▼
There are 177,204 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Dayna Iverson, FNP, RN prescribe most often? ▼
Based on 2023 Medicare Part D data, Dayna Iverson, FNP, RN's most frequently prescribed drugs include Atorvastatin Calcium, Omeprazole, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Dayna Iverson, FNP, RN accept Medicare? ▼
Dayna Iverson, FNP, RN appears in CMS Medicare data with 2,869 Part D claims and 122 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Dayna Iverson, FNP, RN's credentials? ▼
Dayna Iverson, FNP, RN's NPI is 1326588344 with credentials FNP, RN. 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.