DR. MICHAEL YU ZHANG (M.D., PH.D.) – Radiation Oncology Physician, NPI 1861856718
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
677 RADIATION ONCOLOGY in CA
Provider Addresses for DR. MICHAEL YU ZHANG (M.D., PH.D.)
100 HOSPITAL DR STE 100
VALLEJO, CA 945892577
Phone: (707) 551-3400
Type: Location
2309, Franklin Avenue East, Eastlake, Seattle, King County, Washington, 98102, United States
APT 202
SEATTLE, WA 981023353
Phone: (630) 596-3456
Type: Mailing
University of Washington Medical Center - Montlake, 1959, Northeast Pacific Street, University District, Seattle, King County, Washington, 98195, United States
BOX 356410
SEATTLE, WA 981956410
Phone: (206) 543-3687
Type: Location
2333 Buchanan St
Level B
San Francisco, CA 941151925
Phone: (415) 600-3600
Type: Location
575 OXFORD ST
SAN FRANCISCO, CA 941341612
Phone: (630) 596-3456
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 10 Open Payments records for all available years, with a total value of $648.
Total Amount is formed as General ($648) + Research ($0) + Ownership ($0) = $648.
Last reported payment date: 2024-12-21 • Largest payer in this snapshot: W. L. Gore & Associates, Inc. ($233).
Total Amount
$648
General + Research + Ownership
Payments
10
Total payment records
General Amount
$648
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-21
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| W. L. Gore & Associates, Inc. | $233 |
| Siemens Medical Solutions USA, Inc. | $214 |
| Alphatec Spine, Inc | $202 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2021-08-25
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20210825003326 | I | Radiation Oncology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 77014 | Ct guidance for insertion of radiation therapy fields | 950 | 44 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 272 | 67 | $0 |
| 77300 | Calculation of radiation therapy dose | 256 | 70 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 202 | 69 | $0 |
| 77263 | Complex radiation therapy planning | 73 | 70 | $0 |
Insurance plans in this area (ZIP 94589)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | CA | |
| - | CA | |
| Radiation Oncology | CA | |
| Radiation Oncology | CA | |
| Radiation Oncology | CA | |
| Diagnostic Radiology | CA | |
| Radiation Oncology | CA | |
| Radiation Oncology | CA |
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