Physician Profile
Unclaimed ProfileAbout LASSEN
Patrick M Lassen, M.D. is a healthcare provider in Longview, WA specialising in urology. Patrick trained at Oregon Health Sciences University School of Medicine, graduating in 1990.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Lassen specialise in?
Dr. Lassen is an urology in Longview, WA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “UROLOGY”.
NPI registry
Where is Dr. Lassen located?
Dr. Lassen is listed at 625 9TH AVE SUITE 120, Longview, WA 98632. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Lassen's phone number?
The number on file is (360) 636-8950. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Lassen?
Dr. Lassen's National Provider Identifier is 1285632919. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Lassen go to medical school?
Dr. Lassen attended Oregon Health Sciences University School of Medicine, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Lassen have?
Dr. Lassen has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Lassen do most often?
According to Medicare billing data, Dr. Lassen performs procedures including simple insertion of temporary bladder tube, ultrasound measurement of bladder capacity after voiding and diagnostic exam of bladder and urethra using an endoscope; reads or performs imaging such as imaging of urinary tract following injection of a contrast agent and ultrasonic guidance for needle placement, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Lassen's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lassen. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (360) 636-8950
- Email not available
Practice Locations
625 9TH AVE SUITE 120
Longview, WA 98632
Procedures Most Often Billed to Medicare
1,246 services · 914 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Simple insertion of temporary bladder tube | Procedure | 51702 |
131 |
| Ultrasound measurement of bladder capacity after voiding | Procedure | 51798 |
129 |
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
94 |
| Crushing of stone of ureter with insertion of stent using an endoscope | Procedure | 52356 |
23 |
| Biopsy of prostate gland | Procedure | 55700 |
11 |
| Imaging of urinary tract following injection of a contrast agent | Imaging | 74420 |
31 |
| Ultrasonic guidance for needle placement | Imaging | 76942 |
13 |
| Urinalysis, manual test | Lab test | 81002 |
338 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
238 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
105 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other urology specialists at this location 4
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Oregon Health Sciences University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1990 at Oregon Health Sciences University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Simple insertion of temporary bladder tube 8
Providers in WA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.