Doctor profile · Federal record
Dr. LEON KAO, MD
Allergy Physician (CMS: ALLERGY/IMMUNOLOGY) · GERMANTOWN, MD
- NPI 1265639728
- Accepts Medicare
- 25 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
19851 OBSERVATION DR STE 375
GERMANTOWN, MD 208764151
(301) 972-3709
fax (301) 515-3612
Credentials & registration
- NPI registered
- June 2007 — 19 yrs on file
- Profile last updated
- September 5, 2022
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207KA0200X — NUCC code
- State license (1)
- Maryland #D0074337
- Medicaid
- VA #1265639728
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265639728. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,484
Distinct HCPCS
7
Medicare allowed
$31,541
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
95004 |
Test for allergy using allergenic extract | 1,246 | 32 | $5 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 81 | 59 | $140 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 45 | 45 | $187 | |
95012 |
Test to measure the level of nitric oxide gas | 39 | 29 | $21 | |
94010 |
Test to measure expiratory airflow and volume | 34 | 25 | $29 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 26 | 23 | $102 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 13 | 13 | $120 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 212. This provider delivers 7.0× the peer median.Open Payments
Industry payments received
All-time total
$1,689
Transactions
64
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, Inc. | 15 | $417.09 | |
| GENZYME CORPORATION | 7 | $331.21 | |
| AstraZeneca Pharmaceuticals LP | 10 | $212.64 | |
| GlaxoSmithKline, LLC. | 9 | $201.48 | |
| Genentech USA, Inc. | 3 | $90.72 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 3 | $82.56 | |
| Amgen Inc. | 3 | $76.40 | |
| Grifols USA, LLC | 4 | $72.03 | |
| Optinose US, Inc. | 3 | $61.89 | |
| Invivyd Inc | 1 | $31.10 | |
| Novartis Pharmaceuticals Corporation | 2 | $31.02 | |
| Phadia US Inc. | 1 | $23.70 | |
| BioCryst US Sales Co., LLC | 1 | $22.52 | |
| Dermavant Sciences, Inc. | 1 | $19.63 | |
| PFIZER INC. | 1 | $15.31 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
253
Patients
51
Total drug cost
$114,804
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Azelastine Hcl | Generic | 30 | 16 | $1,251 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 27 | 0 | $991 |
| Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) | Brand | 27 | 0 | $29,049 |
| Breo Ellipta (Fluticasone/Vilanterol) | Brand | 24 | 0 | $10,681 |
| Montelukast Sodium | Generic | 24 | 11 | $392 |
| Xolair (Omalizumab) | Brand | 24 | 0 | $70,304 |
| Fluticasone Propionate | Generic | 22 | 11 | $392 |
| Hydroxyzine Hcl | Generic | 22 | 0 | $814 |
| Levocetirizine Dihydrochloride | Generic | 20 | 0 | $499 |
| Ipratropium Bromide | Generic | 17 | 0 | $388 |