Lia Ilona Losonczy
Critical Care Medicine (Internal Medicine) Physician · Washington, DC
Lia Ilona Losonczy is a critical care medicine (internal medicine) physician with a practice address in Washington, District of Columbia, and NPI 1598082828, issued on Apr 26, 2010. Check the license (District of Columbia MD046299, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Lia Ilona Losonczy
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License numbers
- MD046299 DC
130352 CA
A130352 CA
Self-reported in NPPES; status is on the state search - Practice location
- 900 23RD St NW, Washington, DC 20037
- Phone
- (202) 741-2911
- Enumerated
- Apr 26, 2010
- Record last updated
- Jul 1, 2025
- Fax
- (202) 741-2921
- Medicare enrollment
- Enrolled (PECOS I20150724012044); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 49 in District of Columbia → Look up another NPI →
Also registered at 900 23RD St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mariam Abdelshahid, PHARMDPharmacist1881271559
- Zayd Abdul-Ali, DPTNeurology Physical Therapist1215899257
- Saleem Abdulrauf, MDNeurological Surgery Physician1972614626
- Osereme AbuluStudent in an Organized Health Care Education/Training Program1285383729
- Crystal AdamsAnesthesiology Physician1922462233
- Leah AdamsStudent in an Organized Health Care Education/Training Program1457292682
Verify Lia Ilona Losonczy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD046299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average critical care medicine (internal medicine) physician in 2024
11 Medicare Part D claims, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Alameda Health SystemOakland, CA
- Medical Faculty Associates, IncWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lia Ilona Losonczy among 49 critical care medicine (internal medicine) physician records in District of Columbia
Lia Ilona Losonczy is one of 49 critical care medicine (internal medicine) physician records with a practice address in District of Columbia. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 47% of them.
- NPI issued2010 · 47% of these records are older, 43% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2012 · median 2010 among the 39 with a school on file
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in District of Columbia
There are 49 critical care medicine (internal medicine) physician records in District of Columbia.
All 49 in District of Columbia → Every provider in Washington → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Nawaf Abaalkhail, MDWashington, DC 200371104246958
- Shahzad Ahmad, MDWashington, DC 200371730110123
- Suliman Alamro, M.DWashington, DC 200371124385869
- Lakhmir Chawla, MDWashington, DC 200371124087721
- Danielle Davison, M.D.Washington, DC 200371528230604
- Vivek Jain, MDWashington, DC 200371245249085
- Daniel King, M.D.Washington, DC 200371518351444
- Nancy MaatyWashington, DC 200371598080632
Common questions
What is Lia Ilona Losonczy's NPI number?
Lia Ilona Losonczy's National Provider Identifier (NPI) is 1598082828, issued on Apr 26, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Lia Ilona Losonczy located?
The NPPES record lists a practice address at 900 23RD St NW, Washington, DC, 20037. Phone: (202) 741-2911. Providers update this record themselves, so call before visiting.
How can I verify Lia Ilona Losonczy's license?
NPPES lists District of Columbia license number MD046299, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lia Ilona Losonczy prescribe under Medicare Part D?
In 2024, Lia Ilona Losonczy had 11 Medicare Part D claims; the average among critical care medicine (internal medicine) physician prescribers was 696. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.