DR. LEONARD KHALIL KASSIS (M.D.) – Internal Medicine Physician, NPI 1659547818
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,245 INTERNAL MEDICINE in MD
Provider Addresses for DR. LEONARD KHALIL KASSIS (M.D.)
350 SUITE D FORTUNE TERRACE
ROCKVILLE, MD 208542972
Phone: (301) 309-0016
Fax: (301) 309-0174
Type: Mailing
350 SUITE D FORTUNE TERR
ROCKVILLE, MD 208542972
Phone: (301) 309-0016
Fax: (301) 309-0174
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 58 Open Payments records for all available years, with a total value of $1,274.
Total Amount is formed as General ($1,274) + Research ($0) + Ownership ($0) = $1,274.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: Novo Nordisk Inc ($335).
Total Amount
$1,274
General + Research + Ownership
Payments
58
Total payment records
General Amount
$1,274
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 |
|---|---|
| Novo Nordisk Inc | $335 |
| ABBVIE INC. | $166 |
| PFIZER INC. | $134 |
| Exact Sciences Corporation | $106 |
| Inspire Medical Systems, Inc. | $64 |
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: 2009-09-24
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 |
|---|---|---|---|---|
| I20090924000521 | I | Internal Medicine | DC | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 331 | 141 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 186 | 101 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 98 | 98 | $0 |
| 93000 | Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 87 | 85 | $0 |
| G0444 | Annual depression screening, 5 to 15 minutes | 81 | 81 | $0 |
Insurance plans in this area (ZIP 20854)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | VA | |
| Internal Medicine | MD | |
| Nurse Practitioner | VA | |
| Family Practice | MD | |
| Internal Medicine | MD | |
| Nurse Practitioner | VA | |
| Physician Assistant | OH | |
| General Practice | CA | |
| Nurse Practitioner | VA | |
| Clinical Social Worker | MD |
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