Dr. Tristan Marriner Nicholson , MD, PhD
Urology โข Seattle, WA
1959 Ne Pacific St
Seattle, WA 981950001
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on April 14, 2015; this date does not establish years in practice.
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Published CMS data list 53 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 40 service units.
- 99204 โ New patient outpatient office visit: 13 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 42 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Tamsulosin Hcl โ 30 prescription fills, including refills.
- Finasteride โ 12 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 90% of clinicians listed under Urology in Seattle, WA (2024, 56 clinicians with data). Median for this group: 494. Middle half: 199 to 933.
Fewer Medicare Part B services than 90% of clinicians listed under Urology in Washington (2024, 191 clinicians with data). Median for this group: 802. Middle half: 338 to 1,756.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 24 in 2023 to 53 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2023โ2024.
Practice Location & Contact Primary Location
1959 Ne Pacific St
Seattle, WA 981950001
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: The Association Of University Physicians. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2015
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
49 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $6,152 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $4,336 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
99 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$451 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $75.82 across 2 records.
By nature of payment
- Food and Beverage: $75.82 across 2 records.
Reporting-company totals
- COLOPLAST CORP: $57.90 across 1 record.
- Boston Scientific Corporation: $17.92 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
11 years (graduated 2015)
CMS Doctors and Clinicians data list 2015 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2015
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Nicholson has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Nicholson as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Seattle and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 90% of clinicians listed under Urology in Seattle, WA (2024, 56 clinicians with data). Median for this group: 494. Middle half: 199 to 933.
Fewer Medicare Part B services than 90% of clinicians listed under Urology in Washington (2024, 191 clinicians with data). Median for this group: 802. Middle half: 338 to 1,756.
Medicare-allowed amount
A lower Medicare-allowed amount than 90% of clinicians listed under Urology in Seattle, WA (2024, 56 clinicians with data). Median for this group: $51,088. Middle half: $28,886 to $111,118.
A lower Medicare-allowed amount than 90% of clinicians listed under Urology in Washington (2024, 191 clinicians with data). Median for this group: $83,512. Middle half: $34,252 to $154,605.
Paid by Medicare
A lower Medicare payment amount than 90% of clinicians listed under Urology in Seattle, WA (2024, 56 clinicians with data). Median for this group: $39,842. Middle half: $21,929 to $83,003.
A lower Medicare payment amount than 90% of clinicians listed under Urology in Washington (2024, 191 clinicians with data). Median for this group: $61,217. Middle half: $24,379 to $113,430.
Medicare Part D prescriptions
Fewer Part D prescriptions than 85% of clinicians listed under Urology in Seattle, WA (2024, 73 clinicians with data). Median for this group: 276. Middle half: 95 to 776.
Fewer Part D prescriptions than 90% of clinicians listed under Urology in Washington (2024, 225 clinicians with data). Median for this group: 732. Middle half: 221 to 1,224.
Part D drug cost
A lower Part D drug cost than 85% of clinicians listed under Urology in Seattle, WA (2024, 73 clinicians with data). Median for this group: $18,717. Middle half: $1,710 to $61,863.
A lower Part D drug cost than 90% of clinicians listed under Urology in Washington (2024, 225 clinicians with data). Median for this group: $40,788. Middle half: $9,435 to $122,211.
119 active clinicians are listed under Urology with a practice address in Seattle, WA (335 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Seattle
51.3% of these 119 clinicians have the CMS telehealth indicator.
63% of these 119 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 121% from 24 in 2023 to 53 in 2024.
- 2023: 24
- 2024: 53
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Medicare-allowed amount
Medicare-allowed amount increased 153% from $2,427 in 2023 to $6,152 in 2024.
- 2023: $2,427
- 2024: $6,152
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Paid by Medicare
Paid by Medicare increased 142% from $1,794 in 2023 to $4,336 in 2024.
- 2023: $1,794
- 2024: $4,336
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 12 in 2017 to 42 in 2024.
- 2017: 12
- 2018: 26
- 2022: 33
- 2023: 24
- 2024: 42
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30-day fills
30-day fills went from 12 in 2017 to 99 in 2024.
- 2017: 12
- 2018: 26
- 2022: 72
- 2023: 44
- 2024: 99
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Part D drug cost
Part D drug cost went from $84 in 2017 to $451 in 2024.
- 2017: $84
- 2018: $164
- 2022: $563
- 2023: $209
- 2024: $451
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 97% from $2,933.29 in 2022 to $75.82 in 2025.
- 2022: $2,933.29
- 2023: $233.89
- 2024: $99.34
- 2025: $75.82
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $75.82.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| COLOPLAST CORP |
Food and Beverage
In-kind items and services
|
Titan | General | $57.90 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
AMS 700 | General | $17.92 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2022โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2023โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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40 | 29 | $300.36 | $106.52 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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13 | 13 | $407.72 | $145.45 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Tamsulosin Hcl | Tamsulosin Hcl | 30 | 1,860 | $321.61 | โ |
| Finasteride | Finasteride | 12 | 1,110 | $129.84 | โ |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-05-03NUCC Taxonomy Code: 208800000X
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - UROLOGY
I20210507001178
WA
7517272230
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
The Association Of University Physicians
1959 Ne Pacific St, Seattle, WA 981950001
Phone: 2065984333
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Transplant Hepatology
Doctor of Medicine (M.D.)
Nurse Practitioner
Advanced Registered Nurse Practitioner
Internal Medicine
Nurse Practitioner
Advanced Registered Nurse Practitioner
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1959 NE PACIFIC ST, SEATTLE, WA 981950001 (Tel: 2065205000)
Registered at PO BOX 50095, SEATTLE, WA 981455095 (Tel: 2065205700)
Recorded as TRISTAN NICHOLSON, MD, PHD
Urology (license number reported to NPPES: WA MD61148901)
NPI status registered as active in NPPES database
Registered at 1959 NE PACIFIC ST, BOX 356410, SEATTLE, WA 981950001 (Tel: 9703339796)
Registered at 1959 NE PACIFIC ST, BOX 356410, SEATTLE, WA 981950001 (Tel: 9703339796)
Recorded as TRISTAN NICHOLSON
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Urology Specialists in Seattle
- Dr. Van Ginger, MD, PhD
- Dr. Andrew Deck, MD
- Dr. Cristopher Garlitz, MD
- Dr. Jared Wachterman, MD
- Dr. Robin Lee, MD
- Dr. Robert Sweet, MD
More public profiles in Washington
Directory navigation, in NPI number order.
- Nicole Kim Internal Medicine - Hepatology ยท Seattle
- Tigran Khachatryan Dentist ยท Redmond
- Eric Graham, MD Radiology - Diagnostic Radiology ยท Spokane
- Susan Jones, ARNP Nurse Practitioner - Family ยท Issaquah
- Elnathan Eldredge Physical Therapist ยท Vancouver
- Frederick Worrell, DDS Dentist ยท Lynnwood
- Chipepo Mugala, PA-C Physician Assistant ยท Wenatchee
- Aaron Fordice, PA-C Physician Assistant - Medical ยท Vancouver
- Rachel Winstedt, ND Naturopath ยท Tumwater
- Amy Nackers, PA-C Physician Assistant ยท Spokane
- Anne Pollock, MSN, RN, PMHNP-BC Nurse Practitioner - Psychiatric/Mental Health ยท Vancouver
- Irfan Yusoff Dentist ยท Mount Vernon
Mailing Address
Po Box 50095
Seattle, WA 981455095
Phone: 2065205700