DR. YAYAN CHEN (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1003859398
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
799 PATHOLOGY in MA
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Provider Addresses for DR. YAYAN CHEN (M.D.)
Saint Vincent Hospital at Worcester Medical Center, 123, Summer Street, Lincoln Square, Belmont Hill, Worcester, Worcester County, Massachusetts, 01608, United States
WORCESTER, MA 016081216
Phone: (508) 363-6049
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 16 Open Payments records for all available years, with a total value of $475.
Total Amount is formed as General ($475) + Research ($0) + Ownership ($0) = $475.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($159).
Total Amount
$475
General + Research + Ownership
Payments
16
Total payment records
General Amount
$475
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
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: 2009-09-11
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 |
|---|---|---|---|---|
| I20090911000575 | I | Pathology | MA | 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 |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 398 | 264 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 88 | 32 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 64 | 55 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 63 | 49 | $0 |
| 88112 | Cell examination of specimen, selective cellular enhancement technique | 38 | 30 | $0 |
Insurance plans in this area (ZIP 01608)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| E N D O C R I N O L O G Y | MA | |
| - | MA | |
| A N E S T H E S I O L O G Y | MA | |
| Cardiac Surgery | MA | |
| Internal Medicine, Geriatric Medicine | MA | |
| H E M A T O L O G Y/ O N C O L O G Y | MA | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | MA | |
| U R O L O G Y | MA | |
| - | MA | |
| Nurse Practitioner | MA |
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