RAYMOND CHARLES TAN (MD) – Radiation Oncology Physician, NPI 1104809946
Radiation Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
677 RADIATION ONCOLOGY in CA
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Provider Addresses for RAYMOND CHARLES TAN (MD)
PO BOX 756
DANVILLE, CA 945260756
Phone: (877) 866-0914
Fax: (916) 303-8568
Type: Mailing
7887, North Cedar Avenue, Fresno, Fresno County, California, 93720, United States
FRESNO, CA 937202685
Phone: (559) 437-1000
Fax: (559) 437-3870
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 33 Open Payments records for all available years, with a total value of $853.
Total Amount is formed as General ($853) + Research ($0) + Ownership ($0) = $853.
Last reported payment date: 2024-12-04 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($197).
Total Amount
$853
General + Research + Ownership
Payments
33
Total payment records
General Amount
$853
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-04
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2022-03-16
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20040713000530 | I | Radiation Oncology | CA | TBD |
| I20220316001380 | I | Radiation Oncology | OR | 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 | 530 | 60 | $0 |
| 77427 | Radiation treatment management, 5 treatment sessions | 190 | 64 | $0 |
| 77300 | Calculation of radiation therapy dose | 165 | 67 | $0 |
| G6002 | Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 135 | 32 | $0 |
| 77334 | Design and construction of complex radiation treatment device | 121 | 71 | $0 |
Insurance plans in this area (ZIP 94526)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Radiation Oncology | OR |
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