MR. NATHAN S CHUNG (MD) – Surgery Physician, NPI 1144249152
Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,317 GENERAL SURGERY in CA
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Provider Addresses for MR. NATHAN S CHUNG (MD)
19341, Bear Valley Road, Apple Valley, San Bernardino County, California, 92308, United States
SUITE 205
APPLE VALLEY, CA 92308
Phone: (760) 247-0333
Fax: (760) 247-8492
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 57 Open Payments records for all available years, with a total value of $2,658.
Total Amount is formed as General ($2,658) + Research ($0) + Ownership ($0) = $2,658.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: Organogenesis Inc. ($1,941).
Total Amount
$2,658
General + Research + Ownership
Payments
57
Total payment records
General Amount
$2,658
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Organogenesis Inc. | $1,941 |
| Smith+Nephew, Inc. | $317 |
| ConvaTec Inc. | $209 |
| LifeNet Health | $102 |
| Resmed Corp | $38 |
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: 2005-10-13
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 |
|---|---|---|---|---|
| I20051013000520 | I | General Surgery | 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 |
|---|---|---|---|---|
| 11042 | Removal of skin and tissue, 20.0 sq cm or less | 1,406 | 259 | $0 |
| 99183 | Management of oxygen chamber therapy | 581 | 33 | $0 |
| 15271 | Application of skin substitute graft to wound of trunk, arms, or legs, 25.0 sq cm or less of wound 100.0 sq cm or less | 288 | 81 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 285 | 193 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 203 | 203 | $0 |
Insurance plans in this area (ZIP 92308)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GENERAL SURGERY | CA | 11042 | Removal of skin and tissue first 20 sq cm or less | 418 | 108 |
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