Yoichiro Shimada , PA
Physician Assistant - Surgical โข Seattle, WA
1100 9th Ave
Seattle, WA 981012756
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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Yoichiro Shimada is listed in NPPES under Physician Assistant - Surgical.
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NPI assigned on December 2, 2019; this date does not establish years in practice.
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Published CMS data list 3,654 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:
- J7325 โ Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg: 1,730 service units.
- J3301 โ Injection, triamcinolone acetonide, not otherwise specified, 10 mg: 1,309 service units.
- 99213 โ Established patient outpatient office visit: 190 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 all 10 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 1,030 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:
- Oxycodone Hcl โ 316 prescription fills, including refills.
- Tramadol Hcl โ 246 prescription fills, including refills.
- Ondansetron Odt (Ondansetron) โ 179 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 all 11 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Physician Assistant - Surgical in Seattle, WA (2024, 79 clinicians with data). Median for this group: 123. Middle half: 47 to 242.
More Medicare Part B services than 95% of clinicians listed under Physician Assistant - Surgical in Washington (2024, 343 clinicians with data). Median for this group: 190. Middle half: 59 to 497.
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 415 in 2022 to 3,654 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022โ2024.
Practice Location & Contact Primary Location
1100 9th Ave
Seattle, WA 981012756
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: Virginia Mason Medical Center. 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
2021
What Public CMS Data Show
Physician Assistant - Surgical: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
287 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 $104,074 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 $76,808 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
1,064 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
$6,046 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: $969.68 across 4 records.
By nature of payment
- Travel and Lodging: $869.68 across 3 records.
- Education: $100.00 across 1 record.
Reporting-company totals
- INTUITIVE SURGICAL, INC.: $969.68 across 4 records.
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
5 years (graduated 2021)
CMS Doctors and Clinicians data list 2021 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
2019
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
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)
Yoichiro Shimada 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 Yoichiro Shimada 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
More Medicare Part B services than 95% of clinicians listed under Physician Assistant - Surgical in Seattle, WA (2024, 79 clinicians with data). Median for this group: 123. Middle half: 47 to 242.
More Medicare Part B services than 95% of clinicians listed under Physician Assistant - Surgical in Washington (2024, 343 clinicians with data). Median for this group: 190. Middle half: 59 to 497.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Physician Assistant - Surgical in Seattle, WA (2024, 79 clinicians with data). Median for this group: $9,840. Middle half: $3,779 to $15,711.
A higher Medicare-allowed amount than 95% of clinicians listed under Physician Assistant - Surgical in Washington (2024, 343 clinicians with data). Median for this group: $14,330. Middle half: $5,481 to $27,670.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Physician Assistant - Surgical in Seattle, WA (2024, 79 clinicians with data). Median for this group: $7,840. Middle half: $2,883 to $12,062.
A higher Medicare payment amount than 95% of clinicians listed under Physician Assistant - Surgical in Washington (2024, 343 clinicians with data). Median for this group: $10,264. Middle half: $4,206 to $20,116.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Physician Assistant - Surgical in Seattle, WA (2024, 92 clinicians with data). Median for this group: 93. Middle half: 38 to 193.
More Part D prescriptions than 95% of clinicians listed under Physician Assistant - Surgical in Washington (2024, 392 clinicians with data). Median for this group: 111. Middle half: 44 to 264.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Physician Assistant - Surgical in Seattle, WA (2024, 92 clinicians with data). Median for this group: $651. Middle half: $219 to $2,537.
A higher Part D drug cost than 80% of clinicians listed under Physician Assistant - Surgical in Washington (2024, 392 clinicians with data). Median for this group: $862. Middle half: $287 to $2,982.
153 active clinicians are listed under Physician Assistant - Surgical with a practice address in Seattle, WA (609 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Seattle
17% of these 153 clinicians have the CMS telehealth indicator.
78.4% of these 153 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 780% from 415 in 2022 to 3,654 in 2024.
- 2022: 415
- 2023: 2,895
- 2024: 3,654
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Medicare-allowed amount
Medicare-allowed amount increased 395% from $21,039 in 2022 to $104,074 in 2024.
- 2022: $21,039
- 2023: $119,738
- 2024: $104,074
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Paid by Medicare
Paid by Medicare increased 403% from $15,274 in 2022 to $76,808 in 2024.
- 2022: $15,274
- 2023: $93,384
- 2024: $76,808
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 2091% from 47 in 2022 to 1,030 in 2024.
- 2022: 47
- 2023: 934
- 2024: 1,030
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30-day fills
30-day fills increased 2164% from 47 in 2022 to 1,064 in 2024.
- 2022: 47
- 2023: 945
- 2024: 1,064
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Part D drug cost
Part D drug cost went from $197 in 2022 to $6,046 in 2024.
- 2022: $197
- 2023: $5,802
- 2024: $6,046
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $33.48 in 2021 to $969.68 in 2025.
- 2021: $33.48
- 2022: $25.08
- 2025: $969.68
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 $969.68.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| INTUITIVE SURGICAL, INC. |
Travel and Lodging
In-kind items and services
|
Da Vinci Surgical System | General | $501.97 |
| INTUITIVE SURGICAL, INC. |
Travel and Lodging
In-kind items and services
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Da Vinci Surgical System | General | $348.71 |
| INTUITIVE SURGICAL, INC. |
Education
In-kind items and services
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DAVINCI XI | General | $100.00 |
| INTUITIVE SURGICAL, INC. |
Travel and Lodging
In-kind items and services
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Da Vinci Surgical System | General | $19.00 |
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 2021โ2023 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, 2022โ2024; 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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J7325
Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg
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1,730 | 27 | $17.04 | $8.28 |
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J3301
Injection, triamcinolone acetonide, not otherwise specified, 10 mg
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1,309 | 139 | $10.47 | $0.98 |
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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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190 | 149 | $191.58 | $77.16 |
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20611
Aspiration and/or injection of fluid large joint using ultrasound guidance
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184 | 143 | $402.51 | $98.01 |
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J7326
Hyaluronan or derivative, gel-one, for intra-articular injection, per dose
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83 | 61 | $879.38 | $506.25 |
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73502
X-ray of hip, 2-3 views
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44 | 38 | $134.80 | $38.89 |
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73564
X-ray of knee, 4 or more views
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42 | 36 | $87.58 | $40.71 |
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27447
Replacement of knee joint, both sides of knee
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27 | 26 | $1136.10 | $173.95 |
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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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26 | 26 | $283.70 | $95.83 |
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27130
Replacement of thigh bone and hip joint with prosthesis
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19 | 18 | $925.86 | $165.48 |
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 |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 316 | 1,288 | $1,195.67 | 149 |
| Tramadol Hcl | Tramadol Hcl | 246 | 886 | $617.95 | 119 |
| Ondansetron Odt | Ondansetron | 179 | 1,151 | $2,302.27 | 157 |
| Meloxicam | Meloxicam | 123 | 3,878 | $711.36 | 95 |
| Methocarbamol | Methocarbamol | 50 | 474 | $243.15 | 39 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 32 | 122 | $127.67 | 12 |
| Cephalexin | Cephalexin | 26 | 325 | $386.22 | 24 |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 21 | 280 | $151.11 | 20 |
| Hydromorphone Hcl | Hydromorphone Hcl | 14 | 87 | $107.91 | โ |
| Omeprazole | Omeprazole | 12 | 1,080 | $137.28 | 11 |
| Gabapentin | Gabapentin | 11 | 228 | $65.84 | 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: 2024-09-26NUCC Taxonomy Code: 363AS0400X
NUCC Taxonomy Code: 2255A2300X
Athletic trainers are allied health care professionals who work in consultation with or under the direction of physicians, and specialize in the prevention, assessment, treatment and rehabilitation of injuries and illnesses. Currently, the entry-level employment requirements are a bachelor's degree with a major in athletic training from an accredited university or college. A majority of athletic trainers hold advanced degrees. National board certification is generally required as a condition of state licensure and employment. Most states regulate athletic trainers, and they practice within the scope of that license or regulation. Clinical practice includes emergency care, rehabilitation, reconditioning, therapeutic exercise, wellness programs, exercise physiology, kinesiology, biomechanics, nutrition, psychology and health care administration.
NUCC Taxonomy Code: 2255A2300X
Athletic trainers are allied health care professionals who work in consultation with or under the direction of physicians, and specialize in the prevention, assessment, treatment and rehabilitation of injuries and illnesses. Currently, the entry-level employment requirements are a bachelor's degree with a major in athletic training from an accredited university or college. A majority of athletic trainers hold advanced degrees. National board certification is generally required as a condition of state licensure and employment. Most states regulate athletic trainers, and they practice within the scope of that license or regulation. Clinical practice includes emergency care, rehabilitation, reconditioning, therapeutic exercise, wellness programs, exercise physiology, kinesiology, biomechanics, nutrition, psychology and health care administration.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20220929002832
WA
5193126613
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
Virginia Mason Medical Center
925 Seneca St, Seattle, WA 981012742
Phone: 2062236600
Virginia Mason Medical Center
1100 9th Ave, Seattle, WA 981012756
Phone: 2062236600
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Surgery
Doctor of Medicine (M.D.)
Nurse Practitioner
Surgery
Doctor of Medicine (M.D.)
Nurse Practitioner
Master of Science in Nursing, Nurse Practitioner
Surgery
Doctor of Medicine (M.D.)
Colon & Rectal Surgery
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 1100 9TH AVE, SEATTLE, WA 981012756 (Tel: 2063410060)
Registered at PO BOX 741515, LOS ANGELES, CA 900741515
Registered at 1100 9TH AVE, SEATTLE, WA 981012756
Specialist/Technologist (license number reported to NPPES: GA AT002792)
Registered at 2820 MAIN ST W, SNELLVILLE, GA 300783156 (Tel: 7709781422)
Specialist/Technologist
Registered at 2820 MAIN ST W, SNELLVILLE, GA 300783156 (Tel: 7709781422)
Recorded as YOICHIRO SHIMADA, PA
Specialist/Technologist (license number reported to NPPES: GA AT002792)
NPI status registered as active in NPPES database
Registered at 4222 RICKENBACKER DR NE UNIT 14, ATLANTA, GA 303423768 (Tel: 5108755890)
Registered at 4222 RICKENBACKER DR NE UNIT 14, ATLANTA, GA 303423768
Recorded as YOICHIRO SHIMADA
Specialist/Technologist
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistant - Surgicals in Seattle
- Lisa Schrafft, PA-C
- Jennifer Stambaugh
- Jazmin Reinhardt, PA-C
- Kristin Byrnes, PA-C
- Magee Patzer, PA-C
- Sin Leung, PA-C
Mailing Address
Po Box 741515
Los Angeles, CA 900741515