Johnny O. Alexander, MD
Diagnostic Radiology Physician · Chicago, IL
Johnny O. Alexander, MD is a diagnostic radiology physician with a practice address in Chicago, Illinois, and NPI 1649439043, issued on Jun 2, 2008. Check the license (Illinois 36128037, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Johnny O. Alexander
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License numbers
- 36128037 IL
316970 NY
MD210012291 DC
0101243293 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3753 S Cottage Grove Ave Ste 101, Chicago, IL 60653
- Phone
- (708) 216-9000
- Enumerated
- Jun 2, 2008
- Record last updated
- Jul 28, 2025
- Medicaid ID
- 1649439043 VA
- Medicare enrollment
- Enrolled (PECOS I20230803002631); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 1,874 in Illinois → Look up another NPI →
Verify Johnny O. Alexander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 36128037Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 83.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $135.52
2 payments; by number, the most common kind was food and beverage; the largest payer was Spr Therapeutics, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 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 7 group practices
- Blackwell Physicians, LLCRockville, MD
- Eastpointe Radiologists PCAlpharetta, GA
- Howard UniversityWashington, DC
- Jamaica HospitalJamaica, NY
- Lifebridge Community Physicians IncBaltimore, MD
- Mori Bean And Brooks IncWaycross, GA
- Professional Services OF Holy CrossSilver Spring, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Johnny O. Alexander among 1,874 diagnostic radiology physician records in Illinois
Johnny O. Alexander, MD is one of 1,874 diagnostic radiology physician records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2002 · median 2004 among the 1,201 with a school on file
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Illinois
There are 1,874 diagnostic radiology physician records in Illinois.
All 1,874 in Illinois → Every provider in Chicago → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Abraham Bronner, M.D.Oak Lawn, IL 606531558339937
- Auveek Basu, M.D., M.B.A.Chicago, IL 606541750570552
- Catherine Kim-Gavino, M.D.Chicago, IL 606541790946127
- Peter Berger, MDChicago, IL 606571851342810
- Howard Girard, MDChicago, IL 606571922059955
- Gregory Goldstein, M.D.Chicago, IL 606571821063496
- Chairat Luangsuwan, MDChicago, IL 606571245280809
- Jack Lyons, MDChicago, IL 606571104877851
Common questions
What is Johnny O. Alexander, MD's NPI number?
Johnny O. Alexander, MD's National Provider Identifier (NPI) is 1649439043, issued on Jun 2, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Johnny O. Alexander, MD located?
The NPPES record lists a practice address at 3753 S Cottage Grove Ave Ste 101, Chicago, IL, 60653. Phone: (708) 216-9000. Providers update this record themselves, so call before visiting.
How can I verify Johnny O. Alexander, MD's license?
NPPES lists Illinois license number 36128037, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Johnny O. Alexander, MD's MIPS final score?
The 2023 MIPS final score is 83.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.