Danny Choy, D.O
Internal Medicine Physician · Chicago, IL
Danny Choy, D.O is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1376526954, issued on Nov 28, 2005. Check the license (Illinois 036103062, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Danny Choy
- Credential
- D.O
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036103062 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2323 S Wentworth Ave, Chicago, IL 60616
- Phone
- (312) 842-0100
- Enumerated
- Nov 28, 2005
- Record last updated
- Feb 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (312) 842-4967
- Medicaid ID
- 036103062 / 01 IL
- Medicare enrollment
- Enrolled (PECOS I20101217000813); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 2323 S Wentworth Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sze Wong, M.D.Family Medicine Physician1053404343
Verify Danny Choy 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 036103062Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average internal medicine physician in 2024
6,418 Medicare Part D claims for 464 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 69 claims were for opioids.
Most prescribed
- Atorvastatin Calcium858 claims
- Amlodipine Besylate480 claims
- Losartan Potassium467 claims
- Metformin Hcl Er282 claims
- Calcitriol265 claims
- Alendronate Sodium192 claims
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 one group practice
- Mount Sinai Community FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Danny Choy among 7,238 internal medicine physician records in Illinois
Danny Choy, D.O is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1997 · median 2003 among the 3,580 with a school on file
- Record last updated2012 · 47% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nagib Ali, M.D.Chicago, IL 606161376529271
- Damon Arnold, M.D.Chicago, IL 606161689650962
- Farzana Begum, M.D.Chicago, IL 606161184616310
- Azmina Bhaiji, M.D.Chicago, IL 606161487689634
- Edward Bleier, MDChicago, IL 606161649256744
- Linus Ema, DOChicago, IL 606161891728010
- Juhyun Ha, M.D.Chicago, IL 606161811913395
- Jean Lee, MDChicago, IL 606161558348375
Common questions
What is Danny Choy, D.O's NPI number?
Danny Choy, D.O's National Provider Identifier (NPI) is 1376526954, issued on Nov 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Danny Choy, D.O located?
The NPPES record lists a practice address at 2323 S Wentworth Ave, Chicago, IL, 60616. Phone: (312) 842-0100. Providers update this record themselves, so call before visiting.
How can I verify Danny Choy, D.O's license?
NPPES lists Illinois license number 036103062, 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.
How much does Danny Choy, D.O prescribe under Medicare Part D?
In 2024, Danny Choy, D.O had 6,418 Medicare Part D claims for 464 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.