HARVEY CHUNG-DER CHANG (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1629074810
Anatomic Pathology & Clinical Pathology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,584 PATHOLOGY in CA
Provider Addresses for HARVEY CHUNG-DER CHANG (M.D.)
PO BOX 576768
MODESTO, CA 953576768
Phone: (209) 577-1200
Fax: (209) 577-6517
Type: Mailing
2625, Coffee Road, Modesto, Stanislaus County, California, 95355, United States
STE S
MODESTO, CA 953552050
Phone: (209) 577-1200
Fax: (209) 577-6517
Type: Mailing
4301 N STAR WAY
MODESTO, CA 953569262
Phone: (209) 577-1200
Fax: (209) 577-6517
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $339.
Total Amount is formed as General ($339) + Research ($0) + Ownership ($0) = $339.
Last reported payment date: 2023-09-28 • Largest payer in this snapshot: Incyte Corporation ($125).
Total Amount
$339
General + Research + Ownership
Payments
3
Total payment records
General Amount
$339
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-09-28
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Incyte Corporation | $125 |
| Amgen Inc. | $110 |
| Merck Sharp & Dohme LLC | $104 |
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: 2004-06-16
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 |
|---|---|---|---|---|
| I20040616001319 | I | Pathology | 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 |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 2,775 | 1,279 | $0 |
| 88342 | Special stained specimen slides to examine tissue, initial procedure | 1,089 | 696 | $0 |
| 88313 | Special stained specimen slides to examine tissue including interpretation and report | 957 | 537 | $0 |
| 88312 | Special stained specimen slides to identify organisms including interpretation and report | 820 | 492 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 788 | 186 | $0 |
Insurance plans in this area (ZIP 95357)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | CA | 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 138 | 129 |
| PATHOLOGY | CA | 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 178 | 103 |
| PATHOLOGY | CA | 88312 | Special stained specimen slides to identify organisms including interpretation and report | 140 | 94 |
| PATHOLOGY | CA | 88342 | Tissue or cell analysis by immunologic technique | 591 | 373 |
Group practice members
| Name | Specialty | State |
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| P A T H O L O G Y | FL | |
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| P A T H O L O G Y | IA | |
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| P A T H O L O G Y | AR | |
| P A T H O L O G Y | CA | |
| - | CA | |
| P A T H O L O G Y | CA | |
| P A T H O L O G Y | CA |
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