Dr. Terry Spark Corwin , MD
Urology • Everett, WA
4310 Colby Ave, Suite 203
Everett, WA 982032338
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 May 27, 2006; this date does not establish years in practice.
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Published CMS data list 2,242 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J9030 — Bcg live intravesical instillation, 1 mg: 1,710 service units.
- 99213 — Established patient outpatient office visit: 122 service units.
- 99214 — Established patient outpatient office visit: 86 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 13 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 963 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – 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 — 256 prescription fills, including refills.
- Myrbetriq (Mirabegron) — 200 prescription fills, including refills.
- Finasteride — 110 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 18 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 80% 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 – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 523 in 2020 to 2,242 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
4310 Colby Ave
Suite 203
Everett, WA 982032338
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Vancouver, WA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Providence Health And Services- Washington. 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
University Of Texas Southwestern Medical School At Dallas
1996
What Public CMS Data Show
Urology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
317 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 – by Provider, 2024.
Medicare-allowed amount
About $48,924 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 – by Provider and Service, 2024.
Paid by Medicare
About $31,673 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 – by Provider and Service, 2024.
30-day fills
1,860 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
$146,419 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $198.36 across 3 records.
By nature of payment
- Food and Beverage: $198.36 across 3 records.
Reporting-company totals
- Pfizer Inc.: $95.81 across 1 record.
- Janssen Pharmaceuticals, Inc: $76.93 across 1 record.
- Ambu Inc.: $25.62 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
30 years (graduated 1996)
CMS Doctors and Clinicians data list 1996 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
2006
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, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Corwin 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. Corwin 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 Everett and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 80% of clinicians listed under Urology in Washington (2024, 191 clinicians with data). Median for this group: 802. Middle half: 338 to 1,756.
Too few clinicians listed under Urology in Everett have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 65% 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.
Too few clinicians listed under Urology in Everett have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 65% 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.
Too few clinicians listed under Urology in Everett have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Urology in Washington (2024, 225 clinicians with data). Median for this group: 732. Middle half: 221 to 1,224.
Too few clinicians listed under Urology in Everett have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 75% 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.
Too few clinicians listed under Urology in Everett have Medicare Part D data for 2024 to compare.
9 active clinicians are listed under Urology with a practice address in Everett, WA (335 in Washington).
Addresses are self-reported to NPPES and may be out of date.
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 329% from 523 in 2020 to 2,242 in 2024.
- 2020: 523
- 2021: 848
- 2022: 923
- 2023: 4,024
- 2024: 2,242
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $46,899 in 2020 and $48,924 in 2024.
- 2020: $46,899
- 2021: $99,185
- 2022: $105,660
- 2023: $129,599
- 2024: $48,924
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Paid by Medicare
Paid by Medicare decreased 13% from $36,341 in 2020 to $31,673 in 2024.
- 2020: $36,341
- 2021: $74,456
- 2022: $77,110
- 2023: $95,530
- 2024: $31,673
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 45% from 662 in 2020 to 963 in 2024.
- 2020: 662
- 2021: 634
- 2022: 839
- 2023: 1,102
- 2024: 963
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30-day fills
30-day fills increased 57% from 1,188 in 2020 to 1,860 in 2024.
- 2020: 1,188
- 2021: 1,067
- 2022: 1,438
- 2023: 1,992
- 2024: 1,860
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Part D drug cost
Part D drug cost increased 92% from $76,409 in 2020 to $146,419 in 2024.
- 2020: $76,409
- 2021: $62,633
- 2022: $105,995
- 2023: $159,666
- 2024: $146,419
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $577.78 in 2021 to $198.36 in 2025.
- 2021: $577.78
- 2022: $424.08
- 2023: $287.07
- 2024: $110.41
- 2025: $198.36
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 · 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 – December 31, 2025): fewer than 11 records totaling $198.36.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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XTANDI | General | $95.81 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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— | General | $76.93 |
| Ambu Inc. |
Food and Beverage
Cash or cash equivalent
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— | General | $25.62 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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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J9030
Bcg live intravesical instillation, 1 mg
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1,710 | 15 | $10.00 | $2.84 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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122 | 111 | $242.00 | $86.35 |
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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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86 | 77 | $359.00 | $121.18 |
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51798
Ultrasound measurement of bladder capacity after voiding
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60 | 52 | $83.00 | $10.41 |
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51720
Instillation of anti-cancer drug into bladder
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46 | 15 | $488.00 | $83.54 |
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81002
Urinalysis, manual test
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45 | 26 | $19.00 | $3.41 |
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52000
Diagnostic exam of bladder and urethra using an endoscope
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33 | 29 | $873.00 | $224.99 |
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51705
Simple change of bladder tube
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31 | 12 | $467.00 | $91.98 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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27 | 26 | $146.00 | $53.76 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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23 | 17 | $135.00 | $47.24 |
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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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22 | 22 | $556.00 | $159.52 |
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51741
Electronic assessment of bladder emptying
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19 | 17 | $355.00 | $13.21 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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18 | 18 | $362.00 | $106.42 |
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 | 256 | 19,836 | $3,356.65 | 81 |
| Myrbetriq | Mirabegron | 200 | 7,922 | $118,185.22 | 44 |
| Finasteride | Finasteride | 110 | 8,649 | $1,126.02 | 33 |
| Methenamine Hippurate | Methenamine Hippurate | 81 | 3,090 | $5,753.32 | 17 |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 48 | 2,820 | $536.99 | 15 |
| Estradiol | Estradiol | 36 | 2,931 | $2,421.40 | 22 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 28 | 199 | $109.51 | 19 |
| Solifenacin Succinate | Solifenacin Succinate | 26 | 1,545 | $970.21 | — |
| Nitrofurantoin | Nitrofurantoin Macrocrystal | 25 | 753 | $684.56 | — |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 23 | 171 | $61.73 | 18 |
| Dutasteride | Dutasteride | 22 | 1,200 | $312.49 | — |
| Mirabegron Er | Mirabegron | 22 | 1,080 | $11,179.14 | — |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 19 | 157 | $340.80 | 17 |
| Cefdinir | Cefdinir | 17 | 126 | $187.10 | 14 |
| Testosterone Cypionate | Testosterone Cypionate | 15 | 1,022 | $789.79 | — |
| Cephalexin | Cephalexin | 12 | 666 | $66.80 | — |
| Alfuzosin Hcl Er | Alfuzosin Hcl | 12 | 1,022 | $282.13 | — |
| Fluconazole | Fluconazole | 11 | 32 | $55.36 | — |
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: 2024-08-07NUCC 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
I20191212002527
TX
8729172382
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
Providence Health And Services- Washington
1321 Colby Ave, Everett, WA 982011665
Phone: 4252975234
Providence Health And Services- Washington
4310 Colby Ave, Everett, WA 982032338
Phone: 4252528102
Providence Health And Services- Washington
4112 Harbour Pointe Blvd Sw, Mukilteo, WA 982755457
Phone: 4253476330
Providence Health And Services- Washington
1321 Colby Ave, Everett, WA 982011665
Phone: 4252612000
Secondary Practice Locations
8614 E Mill Plain Blvd Ste 201
Vancouver, WA 986642058
Phone: 3607298580
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Urology
Doctor of Medicine (M.D.)
Urology
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 PO BOX 3360, PORTLAND, OR 972083360 (Tel: 8667472455)
NPI status registered as active in NPPES database
Registered at 4310 COLBY AVE, SUITE 203, EVERETT, WA 982032338 (Tel: 4252528102)
Registered at 4310 COLBY AVE, SUITE 203, EVERETT, WA 982032338 (Tel: 4252528102)
Recorded as TERRY CORWIN, MD
Urology (license number reported to NPPES: WA MD00040591)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Urology Specialists in Everett
- Dr. Brian Fong, MD
- Dr. Stephen Mock, MD
- Dr. Jeong Yoon, MD
- Dr. Rakesh Khanna, MD
- Dr. Christopher Hempel, MD
Mailing Address
Po Box 3360
Portland, OR 972083360
Phone: 8667472455