NPI registry status
Active
2026 NPPES data Urology Physician NPI 1285632919 M.D.
Verify on CMS → Patrick Lassen, M.D.
Urology Physician in Longview, 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 13,606 in Urology Physician, 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
2K
Medicare Part D claims · 504 beneficiaries · Urology Physician avg: 1K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Patrick Lassen, M.D. filed 1,750 Medicare Part D claims in 2024 as a Urology Physician in Longview, Washington, prescribing 96% generic.
- 2K
- Part D claims, 2024
- 96%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥82nd
- 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.
Federal trust snapshot
What official records show about Patrick Lassen, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1285632919), first enumerated 07/07/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,750 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Washington statewide board action statistics are published annually — these figures describe aggregate state activity, not Patrick Lassen, M.D.'s individual license status. Verify directly with the state medical board.
Source: WMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1285632919 · Urology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1285632919
- ENUM-LEGACY 2005
- TAX-MID 14K Urology Physician
- RX-MID 1,750
- BOOK-THIN 319 in Washington
- PHOTO-ENUM Logan Hoxie, MD · 2005
Patrick Lassen, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,750 ≥ 82nd percentile 82% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
Patrick Lassen, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Patrick Lassen, M.D.?
Quality data not reportedPrimary specialty
Urology Physician
Medicare Part D claims
1,750 29% vs specialty avg
Specialty distribution in Washington
How Urology Physician 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 Urology Physician. 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 | 1285632919 |
|---|---|
| Specialty | Urology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/07/2005 |
Hospital and facility affiliations
Facilities where Patrick Lassen, M.D. 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.
Salem Health
Salem, 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).
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 Patrick Lassen, M.D.. To verify Patrick Lassen, M.D.'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 · Generic-heavy
Patrick Lassen, M.D. - brand share 4.0%
Urology Physician average
4% brand-name claims vs 96% generic, on 1,750 2024 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 2024.
1,750
Total Claims
$64K
Total Drug Cost
504
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,900.6
- Total Day Supply
- 111,667
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $38K
- Generic Drug Cost
- $26K
- Opioid Claims
- 82 (4.7% rate)
- Antibiotic Claims
- 147
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 1.49
- Gender Split
- 17% female / 83% male
- Age Distribution
- <65: 53, 65-74: 208, 75-84: 193, 85+: 50
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Patrick Lassen, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Tamsulosin Hcl
Tamsulosin Hcl
564 claims
- Finasteride
Finasteride
451 claims
- Oxybutynin Chlorid…
Oxybutynin Chloride Er
242 claims
- Hydrocodone-Acetam… 69
Hydrocodone-Acetaminophen
69 claims
- Ciprofloxacin Hcl 60
Ciprofloxacin Hcl
60 claims
- Alfuzosin Hcl Er 47
Alfuzosin Hcl Er
47 claims
- Solifenacin Succin… 44
Solifenacin Succinate
44 claims
- Myrbetriq 38
Myrbetriq
38 claims
| Drug | Claims |
|---|---|
| Tamsulosin Hcl | 564 |
| Finasteride | 451 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 242 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 69 |
| Ciprofloxacin Hcl | 60 |
| Alfuzosin Hcl Er Alfuzosin Hcl | 47 |
| Solifenacin Succinate | 44 |
| Myrbetriq Mirabegron | 38 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 37 |
| Lorazepam | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Urology Physician Overview
How Patrick Lassen, M.D. fits within the Urology Physician landscape nationally.
13,606
Urology Physician Providers in US
54
States with Urology Physician
1,354
Avg Claims per Provider
Patrick Lassen, M.D.'s 1,750 claims are above the specialty average of 1,354.
Nationwide Urology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lassen, both outside Washington so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Urology Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Lassen.
One of 319 Urology Physician providers enrolled in Washington, 5 are shown here.
Alejandro Abello Martinez
MD MPH
Seattle, WA
Dr. Justin Achua
MD
Seattle, WA
Dr. Nehizena Aihie
MD
Seattle, WA
Dr. Olutiwa Akinsola
MD
Seattle, WA
Dr. Mihai Alexianu
M.D.
Spokane, WA
Compare Urology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Patrick Lassen, M.D.'s specialty? ▼
Patrick Lassen, M.D. specializes in Urology Physician and practices in Longview, Washington. Credentials: M.D..
How much does Patrick Lassen, M.D. prescribe under Medicare Part D? ▼
In 2024, Patrick Lassen, M.D. wrote 1,750 Medicare Part D claims totaling $64K in drug costs for 504 beneficiaries.
Where is Patrick Lassen, M.D. located? ▼
Patrick Lassen, M.D. is located at 625 9TH AVE, Longview, WA, 98632. Phone: (360) 636-8950.
What is Patrick Lassen, M.D.'s NPI number? ▼
Patrick Lassen, M.D.'s National Provider Identifier (NPI) is 1285632919, issued on 07/07/2005.
Does Patrick Lassen, M.D. prescribe more brand-name or generic drugs? ▼
Patrick Lassen, M.D.'s prescribing is 4% brand-name and 96% generic drugs by claim count, with $38K in brand drug costs.
Does Patrick Lassen, M.D. prescribe opioids? ▼
Yes, Patrick Lassen, M.D. had 82 opioid claims in 2024 with an opioid prescribing rate of 4.7%.
How many Urology Physician providers are there in the US? ▼
There are 13,606 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,354 Medicare Part D claims per year.
What drugs does Patrick Lassen, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Patrick Lassen, M.D.'s most frequently prescribed drugs include Tamsulosin Hcl, Finasteride, Oxybutynin Chloride Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Patrick Lassen, M.D. accept Medicare? ▼
Patrick Lassen, M.D. appears in CMS Medicare data with 1,750 Part D claims and 504 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Patrick Lassen, M.D.'s credentials? ▼
Patrick Lassen, M.D.'s NPI is 1285632919 with credentials M.D.. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.