JOHN S TSAKONAS (M.D.) – Cardiovascular Disease Physician, NPI 1851384499
Cardiovascular Disease Physician
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Profile Insights
NPPES metrics only — not quality of care.
3,010 CARDIOVASCULAR DISEASE (CARDIOLOGY) in CA
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Provider Addresses for JOHN S TSAKONAS (M.D.)
16542, Ventura Boulevard, Encino, Los Angeles, Los Angeles County, California, 91436, United States
SUITE 402
ENCINO, CA 914362005
Phone: (818) 782-5041
Fax: (818) 205-9091
Type: Location
15243, Vanowen Street, Van Nuys, Los Angeles, Los Angeles County, California, 91405, United States
SUITE 301
VAN NUYS, CA 914053605
Phone: (818) 782-5041
Fax: (818) 205-9091
Type: Mailing
10921 Wilshire Blvd Ste 1205
Los Angeles, CA 900244005
Phone: (310) 824-3378
Fax: (310) 208-2870
Type: Location
16542 VENTURA BLVD STE 402
ENCINO, CA 914364562
Phone: (818) 782-5041
Fax: (818) 205-9091
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 11 Open Payments records for all available years, with a total value of $268.
Total Amount is formed as General ($268) + Research ($0) + Ownership ($0) = $268.
Last reported payment date: 2024-12-05 • Largest payer in this snapshot: Medtronic, Inc. ($131).
Total Amount
$268
General + Research + Ownership
Payments
11
Total payment records
General Amount
$268
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-05
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2009-06-23
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 |
|---|---|---|---|---|
| I20090623000310 | I | Cardiovascular Disease (Cardiology) | 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 |
|---|---|---|---|---|
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 403 | 236 | $0 |
| 93306 | Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 398 | 359 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 223 | 167 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 212 | 146 | $0 |
| 93880 | Ultrasound of both sides of head and neck blood flow | 157 | 153 | $0 |
Insurance plans in this area (ZIP 91436)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 78452 | Nuclear medicine study of vessels of heart using drugs or exercise multiple studies | 32 | 32 |
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | CA | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 67 | 57 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiovascular Disease (Cardiology), Nuclear Medicine | CA | |
| Interventional Cardiology, Cardiovascular Disease (Cardiology) | DC | |
| Cardiovascular Disease (Cardiology) | CA | |
| Cardiac Electrophysiology, Cardiovascular Disease (Cardiology) | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| - | CA | |
| Cardiovascular Disease (Cardiology) | CA | |
| Cardiac Electrophysiology, Cardiovascular Disease (Cardiology) | CA | |
| Cardiovascular Disease (Cardiology) | CA |
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