DR. PHILIP EFRAIM KORSUN (DO) – Internal Medicine Physician, NPI 1053872309
Internal Medicine Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
21,511 INTERNAL MEDICINE in CA
Provider Addresses for DR. PHILIP EFRAIM KORSUN (DO)
4307 FREEDOM DR UNIT 3
CALABASAS, CA 913025129
Phone: (323) 610-8965
Type: Mailing
14850 ROSCOE BLVD
PANORAMA CITY, CA 914024677
Phone: (818) 787-2222
Type: Location
6911 GOODLAND AVE
NORTH HOLLYWOOD, CA 916055135
Phone: (323) 610-8965
Type: Mailing
Medical City Fort Worth, 900, 8th Avenue, Fort Worth, Tarrant County, Texas, 76104, United States
FORT WORTH, TX 761043902
Phone: (817) 877-5292
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: 2022-07-06
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 |
|---|---|---|---|---|
| I20220706003843 | I | Internal Medicine | 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 |
|---|---|---|---|---|
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 322 | 115 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 53 | 53 | $0 |
Insurance plans in this area (ZIP 91302)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| U R O L O G Y | CA | |
| U R O L O G Y | CA | |
| Internal Medicine | CA | |
| N E U R O L O G Y | NY | |
| Nurse Practitioner | CA | |
| Rheumatology, Internal Medicine | CA | |
| Critical Care (Intensivists), Pulmonary Disease | MA | |
| Critical Care (Intensivists), Pulmonary Disease | CA | |
| Hospitalist, Internal Medicine, Sleep Medicine | CA | |
| P S Y C H I A T R Y | CA |
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