MR. STEPHEN A DE SANTIS (MD) – Surgery Physician, NPI 1366442584
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. STEPHEN A DE SANTIS (MD)
Mission Medical Plaza, 26732, Crown Valley Parkway, Mission Viejo, Orange County, California, 92629, United States
SUITE 351
MISSION VIEJO, CA 926916306
Phone: (949) 364-1007
Fax: (949) 364-6057
Type: Mailing
1280 E. ALMOND AVENUE
MADERA, CA 936375606
Phone: (559) 673-9021
Fax: (559) 673-0479
Type: Mailing
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: 2010-09-16
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 |
|---|---|---|---|---|
| I20100916001122 | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 92691)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | CA | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | CA | |
| - | FL | |
| Nurse Practitioner | VA | |
| U R O L O G Y | CA | |
| - | CA | |
| - | CA | |
| - | CA | |
| Nurse Practitioner | CA | |
| - | CA |
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