NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1528571130 DNP, AGPCNP, ACHPN
Verify on CMS → Brendan Tennefoss, DNP, AGPCNP, ACHPN
Registered Nurse in Spokane, Washington.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 175,652 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
4K
Medicare Part D claims · 389 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
78%
generic claims · 21% 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
Brendan Tennefoss, DNP, AGPCNP, ACHPN filed 3,856 Medicare Part D claims in 2023 as a Registered Nurse in Spokane, Washington, prescribing 78% generic.
- 4K
- Part D claims, 2023
- 78%
- 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.
Brendan Tennefoss, DNP, AGPCNP, ACHPN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,856 Top 9% higher than 91% 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 Brendan Tennefoss, DNP, AGPCNP, ACHPN?
Quality data not reportedPrimary specialty
Registered Nurse
Medicare Part D claims
3,856 286% vs specialty avg
Specialty distribution in Washington
How Registered Nurse compares to other specialties among Washington 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).
Brendan Tennefoss, DNP, AGPCNP, ACHPN appears in the CMS NPPES registry as a Registered Nurse provider holding DNP, AGPCNP, ACHPN credentials at 914 W CARLISLE AVE, Spokane, WA, 99205, with a listed phone of (509) 444-8200. NPI 1528571130 was issued on 11/06/2017.
Medicare Part D records for calendar year 2023 show 3,856 prescription claims written by this provider, covering 389 Medicare beneficiaries and totaling roughly $641K in drug spend, split 21% brand-name and 78% generic by claim count, with an opioid prescribing rate of 3.3%.
Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 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 | 1528571130 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | DNP, AGPCNP, ACHPN |
| Gender | Male |
| NPI Issued | 11/06/2017 |
License & disciplinary context - Washington WMC 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 ~34K Washington medical licensees in 2023 - they are NOT specific to Brendan Tennefoss, DNP, AGPCNP, ACHPN. To verify Brendan Tennefoss, DNP, AGPCNP, ACHPN's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases
WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Brendan Tennefoss, DNP, AGPCNP, ACHPN - brand share 21.0%
Registered Nurse average
21% brand-name claims vs 78% generic, on 3,856 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.
3,856
Total Claims
$641K
Total Drug Cost
389
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,466
- Total Day Supply
- 214,641
- Brand vs Generic
- 21% brand / 78% generic
- Brand Drug Cost
- $549K
- Generic Drug Cost
- $91K
- Opioid Claims
- 129 (3.3% rate)
- Antibiotic Claims
- 57
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.75
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 28, 65-74: 214, 75-84: 105, 85+: 42
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Brendan Tennefoss, DNP, AGPCNP, ACHPN prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
147 claims
- Gabapentin
Gabapentin
140 claims
- Levothyroxine Sodium
Levothyroxine Sodium
138 claims
- Lisinopril
Lisinopril
135 claims
- Amlodipine Besylate
Amlodipine Besylate
134 claims
- Losartan Potassium
Losartan Potassium
95 claims
- Tamsulosin Hcl
Tamsulosin Hcl
76 claims
- Duloxetine Hcl
Duloxetine Hcl
74 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 147 |
| Gabapentin | 140 |
| Levothyroxine Sodium | 138 |
| Lisinopril | 135 |
| Amlodipine Besylate | 134 |
| Losartan Potassium | 95 |
| Tamsulosin Hcl | 76 |
| Duloxetine Hcl | 74 |
| Potassium Chloride | 70 |
| Trazodone Hcl | 67 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Brendan Tennefoss, DNP, AGPCNP, ACHPN fits within the Registered Nurse landscape nationally.
175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider
Brendan Tennefoss, DNP, AGPCNP, ACHPN's 3,856 claims are above the specialty average of 1,000.
Nearby Registered Nurse Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Tennefoss.
Dr. Donald Aakervik
RN
Vancouver, WA
Dr. Tamryn Aalvik
RN
Kent, WA
Isaac Aanenson
Spokane, WA
Dr. Anna Aarhus
RN
Renton, WA
Dr. Victoria Aase
RN
Kelso, WA
Compare 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 Washington medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby 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 Brendan Tennefoss, DNP, AGPCNP, ACHPN's specialty? ▼
Brendan Tennefoss, DNP, AGPCNP, ACHPN specializes in Registered Nurse and practices in Spokane, Washington. Credentials: DNP, AGPCNP, ACHPN.
How much does Brendan Tennefoss, DNP, AGPCNP, ACHPN prescribe under Medicare Part D? ▼
In 2023, Brendan Tennefoss, DNP, AGPCNP, ACHPN wrote 3,856 Medicare Part D claims totaling $641K in drug costs for 389 beneficiaries.
Where is Brendan Tennefoss, DNP, AGPCNP, ACHPN located? ▼
Brendan Tennefoss, DNP, AGPCNP, ACHPN is located at 914 W CARLISLE AVE, Spokane, WA, 99205. Phone: (509) 444-8200.
What is Brendan Tennefoss, DNP, AGPCNP, ACHPN's NPI number? ▼
Brendan Tennefoss, DNP, AGPCNP, ACHPN's National Provider Identifier (NPI) is 1528571130, issued on 11/06/2017.
Does Brendan Tennefoss, DNP, AGPCNP, ACHPN prescribe more brand-name or generic drugs? ▼
Brendan Tennefoss, DNP, AGPCNP, ACHPN's prescribing is 21% brand-name and 78% generic drugs by claim count, with $549K in brand drug costs.
Does Brendan Tennefoss, DNP, AGPCNP, ACHPN prescribe opioids? ▼
Yes, Brendan Tennefoss, DNP, AGPCNP, ACHPN had 129 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
How many Registered Nurse providers are there in the US? ▼
There are 175,652 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 Brendan Tennefoss, DNP, AGPCNP, ACHPN prescribe most often? ▼
Based on 2023 Medicare Part D data, Brendan Tennefoss, DNP, AGPCNP, ACHPN's most frequently prescribed drugs include Atorvastatin Calcium, Gabapentin, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Brendan Tennefoss, DNP, AGPCNP, ACHPN accept Medicare? ▼
Brendan Tennefoss, DNP, AGPCNP, ACHPN appears in CMS Medicare data with 3,856 Part D claims and 389 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Brendan Tennefoss, DNP, AGPCNP, ACHPN's credentials? ▼
Brendan Tennefoss, DNP, AGPCNP, ACHPN's NPI is 1528571130 with credentials DNP, AGPCNP, ACHPN. 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.