John Loui
Internal Medicine Physician · Bel Air, MD
John Loui is an internal medicine physician with a practice address in Bel Air, Maryland, and NPI 1548824261, issued on Apr 29, 2019. Check the license (Maryland D0101008, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- John Loui
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D0101008 MD
TRN32757 FL
Self-reported in NPPES; status is on the state search - Practice location
- 500 Upper Chesapeake Dr, Bel Air, MD 21014
- Phone
- (312) 942-7100
- Enumerated
- Apr 29, 2019
- Record last updated
- Jul 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20240809000146); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 500 Upper Chesapeake Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christina AgronRegistered Nurse1336985225
- Ekunola Alade, MDInternal Medicine Physician1750556288
- Olusumbo AladeMedical Physician Assistant1417484965
Verify John Loui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0101008Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
33 Medicare Part D claims for 15 beneficiaries, against an average of 3,176 among the 108,855 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.
Industry payments in 2024: $16.28
1 payment: food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Adfinitas Health AT Upper Chesapeake Aberdeen LLCAberdeen, MD
- Adfinitas Health AT Upper Chesapeake LLCBel Air, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Loui among 3,904 internal medicine physician records in Maryland
John Loui is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2021 · median 2003 among the 2,445 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
63 internal medicine physician records list a practice address in Bel Air
They are 63 of the 1,945 NPPES records with a practice address in Bel Air, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Bel Air → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vijay Abhyankar, M.D.Bel Air, MD 210141225033806
- David Dunn, M.D.Bel Air, MD 210141700881315
- Qinglin Gao, M.D.Bel Air, MD 210141053381780
- Philip Halstead, M.D.Bel Air, MD 210141962405704
- John Lynch, MDBel Air, MD 210141194721357
- David McClure, M.D.Bel Air, MD 210141275538878
- Ann Osman, M.D.Bel Air, MD 210141184629784
- Sherif Osman, M.D.Bel Air, MD 210141245235852
Common questions
What is John Loui's NPI number?
John Loui's National Provider Identifier (NPI) is 1548824261, issued on Apr 29, 2019. An NPI identifies a provider in billing; it is not a license.
Where is John Loui located?
The NPPES record lists a practice address at 500 Upper Chesapeake Dr, Bel Air, MD, 21014. Phone: (312) 942-7100. Providers update this record themselves, so call before visiting.
How can I verify John Loui's license?
NPPES lists Maryland license number D0101008, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Loui prescribe under Medicare Part D?
In 2024, John Loui had 33 Medicare Part D claims for 15 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.