NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1740269265 PAC
Verify on CMS → Louann Streff, PAC
Physician Assistant in Clark, South Dakota.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,974 in Physician Assistant, 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
6K
Medicare Part D claims · 381 beneficiaries · Physician Assistant avg: 790
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
76.7/100
▼ 6 pts below national avg 83.1 · Above neutral
Industry payments
$45.32
3 payments · CMS Open Payments (Sunshine Act)
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
Louann Streff, PAC reported a CMS MIPS final score of 76.7/100 - below the 83.1 national average - and filed 5,736 Medicare Part D claims in 2023.
- 76.7/100
- MIPS score · -6 vs avg
- 6K
- Part D claims, 2023
- 90%
- generic prescribing
- $45.32
- industry payments (Sunshine Act)
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.
Louann Streff, PAC's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
77 21st percentile higher than 21% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Louann Streff, PAC sits
This provider among physician assistant peers
Across the 27,054 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Louann Streff, PAC writes more Part D claims than 99% of them and scores higher on MIPS quality than 19% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one physician assistant peer from a representative sample of 60; the gold marker is Louann Streff, PAC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Louann Streff, PAC?
Below national averagePrimary specialty
Physician Assistant
Medicare Part D claims
5,736 7× vs specialty avg
MIPS final score
76.7/100 6.4 pts vs avg
Specialty distribution in South Dakota
How Physician Assistant compares to other specialties among South Dakota providers
Medicare quality performance, MIPS
Louann Streff, PAC's 2023 MIPS final score plotted against the Physician Assistant national average
- MIPS Final Score
- 76.7/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Physician Assistant) - 76.7/100 vs national avg 83.1
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).
Louann Streff, PAC appears in the CMS NPPES registry as a Physician Assistant provider holding PAC credentials at 117 1ST AVE W, Clark, SD, 57225, with a listed phone of (605) 532-3676. NPI 1740269265 was issued on 01/12/2006.
Medicare Part D records for calendar year 2023 show 5,736 prescription claims written by this provider, covering 381 Medicare beneficiaries and totaling roughly $340K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 3.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 76.7/100 for the 2023 performance year (Quality 78.6, Cost 44.6), compared with the national average of 83.1.
Physician Assistant is a high-volume specialty nationwide, with 150,974 enrolled providers across 56 states and an average of 790 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 | 1740269265 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PAC |
| Gender | Female |
| NPI Issued | 01/12/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
76.6912
Final Score
Avg: 83.1
78.5693
Quality
44.5681
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Louann Streff, PAC 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.
Sanford Clinic
Sioux Falls, SD
Sanford Medical Center
Clark, SD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Louann Streff, PAC. Source: openpaymentsdata.cms.gov.
Total received
$45
Largest payer
AstraZeneca Pharmaceuticals LP
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.
Brand vs generic prescribing mix · Typical
Louann Streff, PAC - brand share 10.0%
Physician Assistant average
10% brand-name claims vs 90% generic, on 5,736 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.
5,736
Total Claims
$340K
Total Drug Cost
381
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,675
- Total Day Supply
- 271,993
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $257K
- Generic Drug Cost
- $81K
- Opioid Claims
- 184 (3.2% rate)
- Antibiotic Claims
- 329
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 0.85
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 23, 65-74: 204, 75-84: 101, 85+: 53
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Louann Streff, PAC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
261 claims
- Amlodipine Besylate
Amlodipine Besylate
229 claims
- Atorvastatin Calcium
Atorvastatin Calcium
206 claims
- Lisinopril
Lisinopril
169 claims
- Simvastatin
Simvastatin
162 claims
- Losartan Potassium
Losartan Potassium
139 claims
- Omeprazole
Omeprazole
139 claims
- Escitalopram Oxalate
Escitalopram Oxalate
130 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 261 |
| Amlodipine Besylate | 229 |
| Atorvastatin Calcium | 206 |
| Lisinopril | 169 |
| Simvastatin | 162 |
| Losartan Potassium | 139 |
| Omeprazole | 139 |
| Escitalopram Oxalate | 130 |
| Pantoprazole Sodium | 123 |
| Furosemide | 121 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Louann Streff, PAC fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Louann Streff, PAC's 5,736 claims are above the specialty average of 790.
Nearby Physician Assistant Providers in South Dakota
Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as Streff.
Dr. Michael Aanderud
PA-C
Rapid City, SD
Dr. Benjamin Abbey
PA-C
Mitchell, SD
Dr. Julia Abraham
PA-C
Dell Rapids, SD
Riley Ackerman
Rapid City, SD
Dr. Amanda Adams
PA-C
Huron, SD
Compare Physician Assistant 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 South Dakota medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Physician Assistant 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 Louann Streff, PAC's specialty? ▼
Louann Streff, PAC specializes in Physician Assistant and practices in Clark, South Dakota. Credentials: PAC.
How much does Louann Streff, PAC prescribe under Medicare Part D? ▼
In 2023, Louann Streff, PAC wrote 5,736 Medicare Part D claims totaling $340K in drug costs for 381 beneficiaries.
What is Louann Streff, PAC's Medicare quality score? ▼
Louann Streff, PAC has a CMS MIPS Final Score of 76.7/100 (Quality: 78.6, Cost: 44.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Louann Streff, PAC located? ▼
Louann Streff, PAC is located at 117 1ST AVE W, Clark, SD, 57225. Phone: (605) 532-3676.
What is Louann Streff, PAC's NPI number? ▼
Louann Streff, PAC's National Provider Identifier (NPI) is 1740269265, issued on 01/12/2006.
Does Louann Streff, PAC prescribe more brand-name or generic drugs? ▼
Louann Streff, PAC's prescribing is 10% brand-name and 90% generic drugs by claim count, with $257K in brand drug costs.
Does Louann Streff, PAC prescribe opioids? ▼
Yes, Louann Streff, PAC had 184 opioid claims in 2023 with an opioid prescribing rate of 3.2%.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Louann Streff, PAC prescribe most often? ▼
Based on 2023 Medicare Part D data, Louann Streff, PAC's most frequently prescribed drugs include Levothyroxine Sodium, Amlodipine Besylate, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Louann Streff, PAC accept Medicare? ▼
Louann Streff, PAC appears in CMS Medicare data with 5,736 Part D claims and 381 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Louann Streff, PAC's credentials? ▼
Louann Streff, PAC's NPI is 1740269265 with credentials PAC. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.