NPI registry status
Active
2026 NPPES data Oncology Registered Nurse NPI 1528779444 APRN, FNP-C
Verify on CMS → Jaci Mastrandrea, APRN, FNP-C
Oncology Registered Nurse in Klamath Falls, Oregon.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 883 in Oncology 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
314
Medicare Part D claims · 112 beneficiaries · Oncology Registered Nurse avg: 555
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Jaci Mastrandrea, APRN, FNP-C filed 314 Medicare Part D claims in 2023 as a Oncology Registered Nurse in Klamath Falls, Oregon, prescribing 89% generic.
- 314
- Part D claims, 2023
- 89%
- generic prescribing
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.
Jaci Mastrandrea, APRN, FNP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
314 Top 43% higher than 57% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Jaci Mastrandrea, APRN, FNP-C?
Quality data not reportedPrimary specialty
Oncology Registered Nurse
Medicare Part D claims
314 43% vs specialty avg
Specialty distribution in Oregon
How Oncology Registered Nurse compares to other specialties among Oregon 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 Oncology 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).
Jaci Mastrandrea, APRN, FNP-C appears in the CMS NPPES registry as an Oncology Registered Nurse provider holding APRN, FNP-C credentials at 2610 UHRMANN RD, Klamath Falls, OR, 97601, with a listed phone of (541) 274-4800. NPI 1528779444 was issued on 12/12/2022.
Medicare Part D records for calendar year 2023 show 314 prescription claims written by this provider, covering 112 Medicare beneficiaries and totaling roughly $567K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 9.6%.
Oncology Registered Nurse is a narrow specialty nationwide, with 883 enrolled providers across 50 states and an average of 555 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 | 1528779444 |
|---|---|
| Specialty | Oncology Registered Nurse |
| Credentials | APRN, FNP-C |
| Gender | Female |
| NPI Issued | 12/12/2022 |
Hospital and facility affiliations
Facilities where Jaci Mastrandrea, APRN, FNP-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Lake Health District
Lakeview, OR
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Jaci Mastrandrea, APRN, FNP-C - brand share 11.0%
Oncology Registered Nurse average
11% brand-name claims vs 89% generic, on 314 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.
314
Total Claims
$567K
Total Drug Cost
112
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 473
- Total Day Supply
- 12,970
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $405K
- Generic Drug Cost
- $161K
- Opioid Claims
- 30 (9.6% rate)
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.80
- Gender Split
- 63% female / 38% male
- Age Distribution
- <65: 13, 65-74: 54, 75-84: 30, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jaci Mastrandrea, APRN, FNP-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Anastrozole
Anastrozole
30 claims
- Gabapentin
Gabapentin
17 claims
- Prochlorperazine M…
Prochlorperazine Maleate
14 claims
- Hydroxyurea
Hydroxyurea
13 claims
- Letrozole
Letrozole
13 claims
- Tamoxifen Citrate
Tamoxifen Citrate
13 claims
- Ondansetron Odt
Ondansetron Odt
12 claims
- Potassium Chloride
Potassium Chloride
12 claims
| Drug | Claims |
|---|---|
| Anastrozole | 30 |
| Gabapentin | 17 |
| Prochlorperazine Maleate | 14 |
| Hydroxyurea | 13 |
| Letrozole | 13 |
| Tamoxifen Citrate | 13 |
| Ondansetron Odt Ondansetron | 12 |
| Potassium Chloride | 12 |
| Prednisone | 12 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Oncology Registered Nurse Overview
How Jaci Mastrandrea, APRN, FNP-C fits within the Oncology Registered Nurse landscape nationally.
883
Oncology Registered Nurse Providers in US
50
States with Oncology Registered Nurse
555
Avg Claims per Provider
Jaci Mastrandrea, APRN, FNP-C's 314 claims are below the specialty average of 555.
Nearby Oncology Registered Nurse Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Mastrandrea.
Dr. Gabrielle Anderson
DNP
Medford, OR
Dr. Leona Anderson
DNP, AGPCNP-C
Glendale, OR
Dylan Aubrejuan
Portland, OR
Dr. Elizabeth Bailey
RN
Beaverton, OR
Dr. Tara Carlson
RN
McMinnville, OR
Compare Oncology Registered Nurse 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 Oregon medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Oncology Registered Nurse 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 Jaci Mastrandrea, APRN, FNP-C's specialty? ▼
Jaci Mastrandrea, APRN, FNP-C specializes in Oncology Registered Nurse and practices in Klamath Falls, Oregon. Credentials: APRN, FNP-C.
How much does Jaci Mastrandrea, APRN, FNP-C prescribe under Medicare Part D? ▼
In 2023, Jaci Mastrandrea, APRN, FNP-C wrote 314 Medicare Part D claims totaling $567K in drug costs for 112 beneficiaries.
Where is Jaci Mastrandrea, APRN, FNP-C located? ▼
Jaci Mastrandrea, APRN, FNP-C is located at 2610 UHRMANN RD, Klamath Falls, OR, 97601. Phone: (541) 274-4800.
What is Jaci Mastrandrea, APRN, FNP-C's NPI number? ▼
Jaci Mastrandrea, APRN, FNP-C's National Provider Identifier (NPI) is 1528779444, issued on 12/12/2022.
Does Jaci Mastrandrea, APRN, FNP-C prescribe more brand-name or generic drugs? ▼
Jaci Mastrandrea, APRN, FNP-C's prescribing is 11% brand-name and 89% generic drugs by claim count, with $405K in brand drug costs.
Does Jaci Mastrandrea, APRN, FNP-C prescribe opioids? ▼
Yes, Jaci Mastrandrea, APRN, FNP-C had 30 opioid claims in 2023 with an opioid prescribing rate of 9.6%.
How many Oncology Registered Nurse providers are there in the US? ▼
There are 883 Oncology Registered Nurse providers across 50 states in the US. The average Oncology Registered Nurse provider writes 555 Medicare Part D claims per year.
What drugs does Jaci Mastrandrea, APRN, FNP-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Jaci Mastrandrea, APRN, FNP-C's most frequently prescribed drugs include Anastrozole, Gabapentin, Prochlorperazine Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jaci Mastrandrea, APRN, FNP-C accept Medicare? ▼
Jaci Mastrandrea, APRN, FNP-C appears in CMS Medicare data with 314 Part D claims and 112 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jaci Mastrandrea, APRN, FNP-C's credentials? ▼
Jaci Mastrandrea, APRN, FNP-C's NPI is 1528779444 with credentials APRN, FNP-C. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.