HOON CHANG (MD) – Nephrology Physician, NPI 1457987364
Nephrology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,245 INTERNAL MEDICINE in MD
Provider Addresses for HOON CHANG (MD)
655 WATKINS MILL RD FL 5
GAITHERSBURG, MD 208793301
Phone: (240) 632-4021
Type: Mailing
13135 ROUTE 50 STE 135
FAIRFAX, VA 220331907
Phone: (703) 961-0484
Type: Mailing
3400 Spruce Street
1 Founders Pavilion
Philadelphia, PA 19104
Phone: (215) 662-2638
Type: Location
1500 Forest Glen Rd
Silver Spring, MD 209101460
Phone: (301) 754-7000
Type: Location
655 Watkins Mill Rd Fl 5
Gaithersburg, MD 208793301
Phone: (240) 632-4021
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2025-10-01
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 |
|---|---|---|---|---|
| I20200701000310 | I | Internal Medicine | DC | TBD |
| I20251001001765 | I | Nephrology | VA | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 20879)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| N E P H R O L O G Y | TX | |
| N E P H R O L O G Y | VA | |
| N E P H R O L O G Y | VA | |
| N E P H R O L O G Y | VA | |
| Nurse Practitioner | VA | |
| - | VA | |
| Nurse Practitioner | VA | |
| N E P H R O L O G Y | VA | |
| N E P H R O L O G Y | AZ | |
| Nephrology, Internal Medicine | VA |
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