Doctor profile · Federal record
Dr. Leonard Kassis, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Rockville, MD
- NPI 1659547818
- Accepts Medicare
- 31 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
350 Suite D Fortune Terr
Rockville, MD 208542972
(301) 309-0016
fax (301) 309-0174 - Mailing address
-
350 Suite D Fortune Terrace
Rockville, MD 208542972
Credentials & registration
- NPI registered
- May 2008 — 18 yrs on file
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Maryland #D0054434
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659547818. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
990
Distinct HCPCS
10
Medicare allowed
$74,965
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 331 | 141 | $111 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 186 | 101 | $81 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 98 | 98 | $143 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 87 | 85 | $16 | |
G0444 |
Annual depression screening, 5 to 15 minutes | 81 | 81 | $21 | |
83036 |
Hemoglobin a1c level | 61 | 58 | $9 | |
G0447 |
Face-to-face behavioral counseling for obesity, 15 minutes | 52 | 37 | $27 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 34 | 31 | $52 | |
81002 |
Urinalysis, manual test | 28 | 25 | $3 | |
96127 |
Assessment of emotional or behavioral problems | 21 | 17 | $4 |
In context: peer comparison
Among 50 peers in this city , average services per provider: 138. This provider delivers 7.2× the peer median.Open Payments
Industry payments received
All-time total
$917
Transactions
40
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk Inc | 13 | $227.25 | |
| ABBVIE INC. | 4 | $165.99 | |
| Exact Sciences Corporation | 5 | $106.44 | |
| PFIZER INC. | 6 | $96.84 | |
| Inspire Medical Systems, Inc. | 1 | $63.96 | |
| AstraZeneca Pharmaceuticals LP | 3 | $58.24 | |
| Merck Sharp & Dohme LLC | 2 | $53.27 | |
| GlaxoSmithKline, LLC. | 2 | $38.61 | |
| Nevro Corp. | 1 | $33.02 | |
| Lundbeck LLC | 1 | $28.64 | |
| Optinose US, Inc. | 1 | $24.74 | |
| Amgen Inc. | 1 | $19.93 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
708
Patients
178
Total drug cost
$11,911
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 108 | 39 | $2,105 |
| Hydrochlorothiazide | Generic | 86 | 24 | $388 |
| Amlodipine Besylate | Generic | 75 | 26 | $821 |
| Levothyroxine Sodium | Generic | 66 | 18 | $887 |
| Rosuvastatin Calcium | Generic | 64 | 21 | $3,093 |
| Metformin Hcl | Generic | 56 | 19 | $434 |
| Losartan Potassium | Generic | 44 | 16 | $894 |
| Lisinopril | Generic | 39 | 15 | $253 |
| Lisinopril-Hydrochlorothiazide (Lisinopril/Hydrochlorothiazide) | Brand | 37 | 0 | $381 |
| Metoprolol Succinate | Generic | 29 | 0 | $779 |
Frequently asked questions
What is Dr. Leonard Kassis's medical specialty?
Dr. Leonard Kassis practices Internal Medicine Physician in Rockville, MD.
Where does Dr. Leonard Kassis practice?
Dr. Leonard Kassis practices at 350 Suite D Fortune Terr, Rockville, MD 208542972. Office phone: 3013090016.
What is Dr. Leonard Kassis's NPI?
Dr. Leonard Kassis's National Provider Identifier (NPI) is 1659547818, issued by NPPES.
Does Dr. Leonard Kassis accept Medicare assignment?
Yes. Dr. Leonard Kassis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Leonard Kassis commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.