DR. KHOSROW MAHDAVI (MD) – Hematology & Oncology Physician, NPI 1275536773
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
21,558 INTERNAL MEDICINE in CA
Provider Addresses for DR. KHOSROW MAHDAVI (MD)
520 Superior Ave
#315
Newport Beach, CA 926633637
Phone: (949) 642-8566
Fax: (866) 235-0746
Type: Location
200 S MANCHESTER AVE STE 300
ORANGE, CA 928683219
Phone: (714) 456-2986
Type: Mailing
1640 NEWPORT BLVD STE 400
COSTA MESA, CA 926273786
Phone: (949) 999-2400
Type: Location
520, Superior Avenue, Newport Heights, Newport Beach, Orange County, California, 92663, United States
#315
NEWPORT BEACH, CA 926633637
Phone: (949) 642-8566
Fax: (866) 235-0746
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $122.
Total Amount is formed as General ($122) + Research ($0) + Ownership ($0) = $122.
Last reported payment date: 2024-01-23 • Largest payer in this snapshot: Amgen Inc. ($122).
Total Amount
$122
General + Research + Ownership
Payments
1
Total payment records
General Amount
$122
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Amgen Inc. | $122 |
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: 2006-01-13
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20060113000958 | 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 |
|---|---|---|---|---|
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 1,182 | 498 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 408 | 233 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 51 | 48 | $0 |
| 38222 | Biopsy and aspiration of bone marrow sample for diagnosis | 49 | 46 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 46 | 46 | $0 |
Insurance plans in this area (ZIP 92663)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| G A S T R O E N T E R O L O G Y | FL | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| Pulmonary Disease, Critical Care (Intensivists) | MN | |
| Cardiovascular Disease (Cardiology) | CA | |
| Internal Medicine, Endocrinology | CA | |
| Nurse Practitioner | CA | |
| Infectious Disease, Internal Medicine | CA | |
| Nurse Practitioner | CA | |
| Internal Medicine | CA |
Reviews
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