2026 NPPES data Clinical Nurse Specialist NPI 1518906437 RNCS,APRN,BC
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DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC

Clinical Nurse Specialist in GRAND FORKS, North Dakota. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
3K
Medicare Part D claims · 74 beneficiaries · Clinical Nurse Specialist avg: 953
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC is a Clinical Nurse Specialist ([object Object]) practicing in GRAND FORKS, North Dakota with a Medicare Part D prescribing footprint of 3K claims across 74 beneficiaries — 5% brand-name prescribing .

What stands out: DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC filed 2,578 Medicare Part D claims in 2023 across GRAND FORKS, North Dakota. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC at a glance

Quality data not reported

NPI registry status

Active

Issued 06/06/2006

NPI 1518906437

Primary specialty

Clinical Nurse Specialist

Niche

1,708 US NPIs in this specialty

Medicare Part D claims

2,578 171% vs specialty avg

2023 prescription claims

Specialty avg: 953

Specialty distribution in North Dakota

How Clinical Nurse Specialist compares to other specialties among North Dakota providers

North Dakota providers

Clinical Nurse Specialist share within North Dakota

1. Clinical Nurse Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Nurse Specialist share within North Dakota

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Nurse Specialist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical Nurse Specialist ABMS/AOA estimate

Est. board-certified rate (Clinical Nurse Specialist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Nurse Specialist) — ABMS / AOA estimate

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).

DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC is a Clinical Nurse Specialist provider practicing in GRAND FORKS, North Dakota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: RNCS,APRN,BC. NPI: 1518906437. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC appears in the CMS NPPES registry as a Clinical Nurse Specialist provider holding RNCS,APRN,BC credentials at 151 S 4TH ST, GRAND FORKS, ND, 58201, with a listed phone of (701) 795-3000. NPI 1518906437 was issued on 06/06/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GAGNER-TJELLESEN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,578 prescription claims written by this provider, covering 74 Medicare beneficiaries and totaling roughly $357K in drug spend, split 5% brand-name and 95% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Clinical Nurse Specialist is a narrow specialty nationwide, with 1,708 enrolled providers across 49 states and an average of 953 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

151 S 4TH ST
GRAND FORKS, ND 58201

Provider Details

NPI 1518906437
Specialty Clinical Nurse Specialist
Credentials RNCS,APRN,BC
Gender Female
NPI Issued 06/06/2006

Hospital and facility affiliations

Facilities where DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC 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.

NORTHEAST HUMAN SERVICE CENTER
GRAND FORKS, ND

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 · Generic-heavy

DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC — brand share 5.0%
Specialty average (est.)

5% brand-name claims vs 95% generic, on 2,578 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.

2,578
Total Claims
$357K
Total Drug Cost
74
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,692
Total Day Supply
69,792
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$256K
Generic Drug Cost
$101K

Patient Demographics

Average Patient Age
52.9 years
Avg HCC Risk Score
1.20
Gender Split
54% female / 46% male
Age Distribution
<65: 59, 65-74: 14, 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.

Drug Claims
Lorazepam
230
Aripiprazole
171
Quetiapine Fumarate
167
Clozapine
161
Clonazepam
151
Escitalopram Oxalate
124
Duloxetine Hcl
117
Sertraline Hcl
114
Propranolol Hcl
94
Benztropine Mesylate
92

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Clinical Nurse Specialist Overview

How DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC fits within the Clinical Nurse Specialist landscape nationally.

1,708
Clinical Nurse Specialist Providers in US
49
States with Clinical Nurse Specialist
953
Avg Claims per Provider

DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's 2,578 claims are above the specialty average of 953.

Nearby Clinical Nurse Specialist Providers in North Dakota

Other clinicians with the same primary specialty enrolled in North Dakota, drawn from the same CMS NPPES roster as GAGNER-TJELLESEN.

Compare Clinical Nurse Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's specialty?
DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC specializes in Clinical Nurse Specialist and practices in GRAND FORKS, North Dakota. Credentials: RNCS,APRN,BC.
How much does DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC prescribe under Medicare Part D?
In 2023, DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC wrote 2,578 Medicare Part D claims totaling $357K in drug costs for 74 beneficiaries.
Where is DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC located?
DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC is located at 151 S 4TH ST, GRAND FORKS, ND, 58201. Phone: (701) 795-3000.
What is DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's NPI number?
DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's National Provider Identifier (NPI) is 1518906437, issued on 06/06/2006.
Does DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC prescribe more brand-name or generic drugs?
DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's prescribing is 5% brand-name and 95% generic drugs by claim count, with $256K in brand drug costs.
How many Clinical Nurse Specialist providers are there in the US?
There are 1,708 Clinical Nurse Specialist providers across 49 states in the US. The average Clinical Nurse Specialist provider writes 953 Medicare Part D claims per year.
What drugs does DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC prescribe most often?
Based on 2023 Medicare Part D data, DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's most frequently prescribed drugs include Lorazepam, Aripiprazole, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC accept Medicare?
DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC appears in CMS Medicare data with 2,578 Part D claims and 74 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's credentials?
DESIREE GAGNER-TJELLESEN, RNCS,APRN,BC's NPI is 1518906437 with credentials RNCS,APRN,BC. 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

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