Dr. Melanie S Z Walker , MD
Neurological Surgery • Seattle, WA
Harborview Medical Center, 325 9th Ave
Seattle, WA 98104
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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Dr. Melanie Walker is listed in NPPES under Neurological Surgery.
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NPI assigned on October 16, 2006; this date does not establish years in practice.
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Published CMS data list 203 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:
- 76937 — Ultrasonic guidance for blood vessel access: 36 service units.
- 75898 — Imaging of blood vessel: 29 service units.
- 75894 — Review by radiologist of image for insertion of material to block blood flow: 26 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 9 records in the table · Guide: How to read Medicare Part B data
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Close to the middle for Medicare Part B services among clinicians listed under Neurological Surgery in Seattle, WA (2024, 47 clinicians with data). Median for this group: 203. Middle half: 106 to 307.
Close to the middle for Medicare Part B services among clinicians listed under Neurological Surgery in Washington (2024, 101 clinicians with data). Median for this group: 216. Middle half: 105 to 328.
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 43 in 2020 to 203 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
Harborview Medical Center
325 9th Ave
Seattle, WA 98104
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
University Of Texas Medical Branch At Galveston
1998
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
57 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 $67,488 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 $54,319 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.
Open Payments general payments, program year 2025
All general payments: $146.83 across 3 records.
By nature of payment
- Food and Beverage: $146.83 across 3 records.
Reporting-company totals
- MicroVention, Inc.: $126.20 across 2 records.
- Route 92 Medical, Inc.: $20.63 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
28 years (graduated 1998)
CMS Doctors and Clinicians data list 1998 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. Walker 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. Walker 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
Close to the middle for clinicians listed under Neurological Surgery in Seattle, WA (2024, 47 clinicians with data). Median for this group: 203. Middle half: 106 to 307.
Close to the middle for clinicians listed under Neurological Surgery in Washington (2024, 101 clinicians with data). Median for this group: 216. Middle half: 105 to 328.
Medicare-allowed amount
A higher Medicare-allowed amount than 65% of clinicians listed under Neurological Surgery in Seattle, WA (2024, 47 clinicians with data). Median for this group: $47,616. Middle half: $18,643 to $76,946.
A higher Medicare-allowed amount than 65% of clinicians listed under Neurological Surgery in Washington (2024, 101 clinicians with data). Median for this group: $46,322. Middle half: $14,691 to $83,750.
Paid by Medicare
A higher Medicare payment amount than 70% of clinicians listed under Neurological Surgery in Seattle, WA (2024, 47 clinicians with data). Median for this group: $36,986. Middle half: $14,320 to $61,523.
A higher Medicare payment amount than 65% of clinicians listed under Neurological Surgery in Washington (2024, 101 clinicians with data). Median for this group: $35,269. Middle half: $10,947 to $65,100.
129 active clinicians are listed under Neurological Surgery with a practice address in Seattle, WA (232 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Seattle
34.1% of these 129 clinicians have the CMS telehealth indicator.
56.6% of these 129 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 372% from 43 in 2020 to 203 in 2024.
- 2020: 43
- 2021: 127
- 2022: 117
- 2023: 187
- 2024: 203
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Medicare-allowed amount
Medicare-allowed amount increased 257% from $18,900 in 2020 to $67,488 in 2024.
- 2020: $18,900
- 2021: $29,326
- 2022: $28,898
- 2023: $64,990
- 2024: $67,488
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Paid by Medicare
Paid by Medicare increased 259% from $15,110 in 2020 to $54,319 in 2024.
- 2020: $15,110
- 2021: $23,489
- 2022: $22,925
- 2023: $51,941
- 2024: $54,319
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 98% from $8,818.33 in 2021 to $146.83 in 2025.
- 2021: $8,818.33
- 2022: $436.04
- 2023: $361.88
- 2024: $1,813.62
- 2025: $146.83
Sources: CMS Medicare Physician & Other Practitioners (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 $146.83.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| MicroVention, Inc. |
Food and Beverage
In-kind items and services
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WEB ANEURYSM EMBOLIZATION SYSTEM | General | $99.58 |
| MicroVention, Inc. |
Food and Beverage
In-kind items and services
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WEB ANEURYSM EMBOLIZATION SYSTEM | General | $26.62 |
| Route 92 Medical, Inc. |
Food and Beverage
Cash or cash equivalent
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— | General | $20.63 |
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 2019–2023 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, 2020–2024; 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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76937
Ultrasonic guidance for blood vessel access
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36 | 34 | $43.29 | $14.88 |
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75898
Imaging of blood vessel
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29 | 17 | $281.57 | $97.53 |
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75894
Review by radiologist of image for insertion of material to block blood flow
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26 | 19 | $219.42 | $76.50 |
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36224
Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist
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25 | 25 | $1505.64 | $460.46 |
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61624
Occlusion of central nervous system or spinal cord artery
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22 | 16 | $3583.13 | $1220.50 |
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36227
Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist
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20 | 19 | $436.25 | $163.68 |
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61645
Removal of blood clot and injection to dissolve blood clot from head artery using fluoroscopic guidance
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18 | 18 | $2718.27 | $896.92 |
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36226
Insertion of tube into brain artery for diagnosis or treatment with review by radiologist
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16 | 16 | $1302.02 | $243.79 |
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76377
3d radiographic procedure with computerized image postprocessing
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11 | 11 | $117.06 | $41.28 |
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.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207T00000X
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
NUCC Taxonomy Code: 2084N0400X
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEUROSURGERY
I20040517000104
WA
2163412628
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
1701 Columbia Rd, Seattle, WA 981950001
Phone: 2065983100
The Association Of University Physicians
325 9th Ave, Seattle, WA 981042420
Phone: 2067313000
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
Doctor of Medicine (M.D.)
Occupational Therapist
Occupational Therapist
Psychologist - Clinical
Neurological Surgery
Nurse Practitioner - Family
Advanced Registered Nurse Practitioner
Internal Medicine - Geriatric Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated October 16, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Neurological Surgery Specialists in Seattle
- Dr. Anubhav Amin, MD
- Dr. Akshal Patel, MD
- Dr. Robert Bonow, MD
- Dr. Jason Choi, MD
- Dr. Joshua Diamond, MD
- Dr. Michael Levitt, MD
Mailing Address
Po Box 50095
Seattle, WA 981455095