Summary

Dr. Patrick Lassen treats nephrolithiasis, tobacco use disorder, and staghorn calculi, and performs chest fluoroscopy, chest X-ray, and fluoroscopy procedures. He has practiced urology for 36 years and is affiliated with Saint John Medical Center, Salem Health Salem Hospital, PeaceHealth Southwest Medical Center, West Valley Hospital, Ocean Beach Hospital and Medical Clinics, Summit Healthcare Regional Medical Center, and Legacy Salmon Creek Medical Center.

Dr. Lassen earned his medical degree from Oregon Health & Science University School of Medicine and sees patients in Longview and Vancouver, Washington. Patients on Vitals rate Dr. Lassen 4 out of 5.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4
  • 36 years of experience
  • speaks English
  • Oregon Health & Science University School Of Medicine
  • 4 written reviews
  • 1 specialty
  • 7 areas of expertise
  • 7 hospital affiliations
  • 5 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. Patrick Mark Lassen has 5 locations

Peacehealth Longview Urology Clinic Pllc

625 9th Ave Ste 120Longview, WA 98632
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 4:00 pm
SatClosed
SunClosed

Legacy Salmon Creek Medical Center

2211 Ne 139th StVancouver, WA 98686

Ocean Beach Hospital And Medical Clinics

174 1st Ave NIlwaco, WA 98624

Saint John Medical Center

1615 Delaware StLongview, WA 98632

Peacehealth Southwest Medical Center

400 Ne Mother Joseph PlVancouver, WA 98664

Compare with Similar Doctors

Dr. Patrick Mark Lassen, MD
Dr. Eric Scott Reid, MD
Dr. Jeffery Cottle Wheat, MD
Dr. Michael K Lam, MD
Dr. Patrick Mark Lassen, MDDr. Eric Scott Reid, MDDr. Jeffery Cottle Wheat, MDDr. Michael K Lam, MD
UrologyUrologySurgeryUrology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4 
4.4 
3 
0 
36 Years of Experience 21 Years of Experience 21 Years of Experience 12 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English
Longview , WALongview , WAClackamas , ORVancouver , WA
Med School: Oregon Health & Science University School Of Medicine Med School: Oregon Health & Science University School Of Medicine Med School: David Geffen School Of Medicine At Ucla Med School: UNIVERSITY OF VERMONT COLLEGE OF MEDICINE
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Patrick Mark Lassen

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Patrick Mark Lassen has the following specialty

Specialty Expertise

Dr. Patrick Mark Lassen has the following 7 areas of expertise

  • Bladder Issues
  • Erectile Dysfunction (ED)
  • Kidney Stones
  • Overactive Urinary Bladder
  • Prostate Cancer
  • Prostatitis
  • Urologic Emergencies

Certifications, License, & Education

36 Years Experience

Dr. Patrick Mark Lassen holds an expired medical license in the state of Washington.

Medical License

Medical Doctor with an expired medical license in the state of Washington that expired in 2025.

Education & Training

Medical School

Graduated from Oregon Health & Science University School Of Medicine in 1990.

NPI Number

Dr. Lassen's NPI number is 1285632919.

Similar doctors

Frequently Asked Questions

What languages does Dr. Patrick Lassen speak?
Dr. Patrick Lassen speaks English.
Is Dr. Patrick Lassen accepting new patients?
Dr. Patrick Lassen is accepting new patients on Vitals. View Dr. Patrick Lassen's profile on Vitals to make an appointment.
How can I make an appointment with Dr. Patrick Lassen?
You can find contact information for Dr. Patrick Lassen here on Vitals.
Does Dr. Patrick Lassen accept my insurance?
You can see the insurance plans that Dr. Patrick Lassen accepts on their Vitals profile.
Which hospitals is Dr. Patrick Lassen affiliated with?
Dr. Patrick Lassen is affiliated with Saint John Medical Center, Salem Health Salem Hospital, Peacehealth Southwest Medical Center, West Valley Hospital, Ocean Beach Hospital And Medical Clinics, Summit Healthcare Regional Medical Center, and Legacy Salmon Creek Medical Center.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.