Dr. Patrick M. Lassen, MD
- Medicare services, 2024
- 1,246
- Medicare patients, 2024
- 346
- Part D claims, 2024
- 1,750
- Hospital affiliations
- 1
- Industry payments
- $132
- Practice address
- 625 9th Ave Ste 110, Longview, WA 98632
- Practice phone
- Call (360) 501-3400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pacific Surgical Center
Surgery Center - Medicare-Certified · Longview, Washington
Find Dr. Lassen's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Patrick M. Lassen is a urologist in Longview, Washington
Dr. Lassen practices at Pacific Surgical Center in Longview, Washington.
Dr. Lassen's NPI, 1285632919, was assigned on July 7, 2005. Dr. Lassen graduated from Oregon Health Sciences University School of Medicine in 1990. Dr. Lassen holds Washington license MD000037114.
- NPI
- 1285632919NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446147946
- NPI enumeration date
- July 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (360) 501-3400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Patrick M. Lassen practices at Pacific Surgical Center in Longview, Washington
Dr. Lassen's primary practice is Pacific Surgical Center, at 625 9th Ave Ste 110, Longview, WA 98632. The practice phone is (360) 501-3400.
- Pacific Surgical Center625 9th Ave Ste 110, Longview, WA 98632Phone(360) 501-3400
Source: Dmand AI Affiliation Data
Dr. Patrick M. Lassen is affiliated with 4 sites of care and 3 medical groups
Dr. Lassen's primary practice is Pacific Surgical Center in Longview, Washington. Dr. Lassen is also affiliated with Salem Hospital. The medical group on file is PeaceHealth St. John Medical Center. Dmand AI also links Dr. Lassen to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Patrick M. Lassen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lassen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pacific Surgical Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Patrick M. Lassen is one of 281 urologists in Washington
Urology is Dr. Lassen's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Lassen is licensed in Washington.
Specialties and state licenses
- Urology, WashingtonPrimary
Urologists near Dr. Lassen
Counts of urologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Patrick M. Lassen billed Medicare for 1,246 services in 2024
CMS data shows 1,246 Medicare services from Dr. Lassen across 14 procedure codes in 2024, for 346 Medicare patients. Medicare paid $74,467 for them.
Dr. Lassen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5602024: 45619%
- Surgery
- 2023: 3772024: 3883%
- Lab and pathology
- 2023: 4042024: 33816%
- Imaging
- 2023: 302024: 4447%
- Other services
- 2023: 02024: 20
- Drugs given in the office
- 2023: 492024: 0100%
- Tests and treatments
- 2023: 132024: 0100%
Where Dr. Lassen's Medicare services took place, 2024
- In an office1,17995%
- In a facility675%
Dr. Lassen compared with the Washington median for urologists, 2024
- Dr. Lassen
- Washington median
- Medicare services
- 1,246vs 70876% above
- Medicare patients
- 346vs 3189% above
- Part D claims
- 1,649vs 4873.4 times
Medians across 274 urologists in Washington with Dmand AI profiles that report each measure.
Dr. Lassen's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Lassen and other urologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Patrick M. Lassen treated 346 Medicare patients in 2024, average age 76
CMS counts 346 Medicare patients who saw Dr. Lassen in 2024. The largest group is 75 to 84, with 140 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lassen's median patient age at 72, with 21% women.
Dr. Lassen's Medicare patients by age, 2024
Dr. Lassen's Medicare patients by sex, 2024
- Women8324%
- Men26376%
Chronic conditions among Dr. Lassen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Arthritis40%
- Chronic kidney disease29%
- Diabetes28%
- Ischemic heart disease27%
- Cancer25%
- Atrial fibrillation22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lassen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women21%
- Men78%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Patrick M. Lassen wrote 1,750 Medicare Part D claims in 2024
In 2024, Dr. Lassen wrote 1,750 Medicare Part D claims for 504 patients. 96% of them were for generic drugs. CMS names the drug for 1,649 of them, across 15 drugs with 11 or more claims each, at $53,890 in total drug cost. In 2023, CMS named 1,652 claims across 15 drugs.
Dr. Lassen's Part D claims by kind of drug, 2024
- Generic1,685 claims96%
- Brand-name65 claims4%
Dr. Lassen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Lassen's Part D claims, 2024
- Opioids5%82 of 1,750 claims
- Antibiotics8%147 of 1,750 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,6522024: 1,649No change
Drugs named by CMS: 15 in 2024, 15 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Patrick M. Lassen takes part in Medicare
Dr. Lassen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Patrick M. Lassen received $132 in industry payments from 2016 to 2022
CMS Open Payments shows 6 general payments to Dr. Lassen from 4 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 62% of the total. Astellas Pharma US Inc paid the most, $50.
General payments to Dr. Lassen by program year, 2016 to 2022
General payments to Dr. Lassen by kind, 2016 to 2022
- Food and beverage$8262%
- Education$5038%
Companies that paid Dr. Lassen the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Patrick M. Lassen graduated from Oregon Health Sciences University School of Medicine
Dr. Lassen graduated from Oregon Health Sciences University School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Patrick M. Lassen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Patrick M. Lassen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Patrick M. Lassen's NPI number?
Dr. Patrick M. Lassen's NPI number is 1285632919. It was assigned on July 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Patrick M. Lassen?
Dr. Patrick M. Lassen is a urologist in Longview, Washington. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Patrick M. Lassen practice?
Dr. Lassen practices at 625 9th Ave Ste 110, Longview, WA 98632. Dr. Lassen's primary practice is Pacific Surgical Center in Longview, Washington. Dmand AI also links Dr. Lassen to 2 group practices and clinics and 2 medical groups.
What is Dr. Patrick M. Lassen's office phone number?
The practice phone on file for Dr. Lassen is (360) 501-3400.
What is Dr. Patrick M. Lassen's medical license number?
Dr. Lassen holds Washington license MD000037114.
Which hospitals is Dr. Patrick M. Lassen affiliated with?
Dr. Lassen is affiliated with Salem Hospital.
What medical group is Dr. Patrick M. Lassen part of?
Dr. Lassen is linked to PeaceHealth St. John Medical Center. Dmand AI links Dr. Lassen to 2 more medical groups.
Does Dr. Patrick M. Lassen accept Medicare?
Yes. CMS data shows Dr. Lassen billed Medicare for 1,246 services in 2024, and Dr. Lassen accepts Medicare assignment.
How many Medicare patients does Dr. Patrick M. Lassen see?
CMS counts 346 Medicare patients who saw Dr. Lassen in 2024, with an average age of 76.
What services does Dr. Patrick M. Lassen bill to Medicare?
In 2024, Dr. Lassen's most billed Medicare services were lab and pathology test (81002), office visit, established patient (99214) and surgery: urinary system (51702).
Show 4 more questionsShow fewer questions
Where did Dr. Patrick M. Lassen go to medical school?
Dr. Lassen graduated from Oregon Health Sciences University School of Medicine in 1990.
What drugs does Dr. Patrick M. Lassen prescribe most?
In 2024 Medicare Part D data, Dr. Lassen's most prescribed drugs by claims were Tamsulosin HCl, Finasteride and Oxybutynin Chloride ER.
Has Dr. Patrick M. Lassen received payments from drug or device companies?
CMS Open Payments shows $132 in general payments to Dr. Lassen from 4 companies from 2016 to 2022. The largest total came from Astellas Pharma US Inc.
How long has Dr. Patrick M. Lassen been practicing?
Dr. Lassen graduated from medical school in 1990, 36 years ago.
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