Doctor profile · Federal record
Dr. Lia Losonczy
Critical Care Medicine (Internal Medicine) Physician (CMS: Emergency Medicine) · Critical Care Medicine (Internal Medicine) Physician · Emergency Medicine Physician · Emergency Medicine Physician · Washington, DC
- NPI 1598082828
- Accepts Medicare
- 14 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
900 23Rd St Nw
Washington, DC 200372342
(202) 741-2911
fax (202) 741-2921 - Additional location
-
The Johns Hopkins Hospital 600 North Wolf St
Baltimore, MD 212870005
(410) 955-5000 - Mailing address
-
The Johns Hopkins Hospital 600 North Wolf St
Baltimore, MD 212870005
Credentials & registration
- NPI registered
- April 2010 — 16 yrs on file
- Profile last updated
- July 1, 2025
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 207RC0200X — NUCC code
- State licenses (3)
- District of Columbia #MD046299 · California #A130352 · California #130352
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598082828. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
229
Distinct HCPCS
5
Medicare allowed
$40,979
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99291 |
Critical care, first 30-74 minutes | 108 | 72 | $236 | |
99285 |
Emergency department visit with high level of medical decision making | 46 | 46 | $194 | |
99284 |
Emergency department visit with moderate level of medical decision making | 40 | 38 | $133 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 22 | 21 | $9 | |
99283 |
Emergency department visit with low level of medical decision making | 13 | 13 | $79 |
In context: peer comparison
Among 18 peers in Washington Critical Care Medicine (Internal Medicine) Physician, average services per provider: 70. This provider delivers 3.3× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Lia Losonczy's medical specialty?
Dr. Lia Losonczy practices Critical Care Medicine (Internal Medicine) Physician in Washington, DC.
Where does Dr. Lia Losonczy practice?
Dr. Lia Losonczy practices at 900 23Rd St Nw, Washington, DC 200372342. Office phone: 2027412911.
What is Dr. Lia Losonczy's NPI?
Dr. Lia Losonczy's National Provider Identifier (NPI) is 1598082828, issued by NPPES.
Does Dr. Lia Losonczy accept Medicare assignment?
Yes. Dr. Lia Losonczy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lia Losonczy commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291); Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.