David Ying Foong Chiou, M.D.
Internal Medicine Physician · Mundelein, IL
David Ying Foong Chiou, M.D. is an internal medicine physician with a practice address in Mundelein, Illinois, and NPI 1093779084, issued on Apr 14, 2006. Check the license (Illinois 036098964, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- David Ying Foong Chiou
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036098964 IL
Self-reported in NPPES; status is on the state search - Practice location
- 157 N Seymour Ave, Mundelein, IL 60060
- Phone
- (847) 566-0300
- Enumerated
- Apr 14, 2006
- Record last updated
- May 26, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (847) 566-2818
- Medicaid ID
- 036098964 IL
- Medicare enrollment
- Enrolled (PECOS I20100802001002); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 157 N Seymour Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nina Neyman, M.D.Internal Medicine Physician1942263512
Verify David Ying Foong Chiou 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 036098964Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,462 Medicare Part D claims for 443 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 187 claims were for opioids.
Most prescribed
- Atorvastatin Calcium400 claims
- Amlodipine Besylate372 claims
- Levothyroxine Sodium280 claims
- Lisinopril253 claims
- Metformin Hcl234 claims
- Eliquis228 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.
Industry payments in 2024: $360.71
16 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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 one group practice
- Lake County Medical Group SCGrayslake, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Ying Foong Chiou among 7,238 internal medicine physician records in Illinois
David Ying Foong Chiou, M.D. 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1996 · median 2003 among the 3,580 with a school on file
- Record last updated2015 · 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).
5 internal medicine physician records list a practice address in Mundelein
They are 5 of the 266 NPPES records with a practice address in Mundelein, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Mundelein → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Bruce Hyman, M.D.Mundelein, IL 600601316044415
- Sindhuja MuddamMundelein, IL 600601912521584
- Nina Neyman, M.D.Mundelein, IL 600601942263512
- Sergei Shevlyagin, MDMundelein, IL 600601235123589
- Rafa Adi, M.D.Vernon Hills, IL 600611205845054
- Nadeem Alavi, DOVernon Hills, IL 600611609934983
- Howard Baker, D.O.Vernon Hills, IL 600611558326439
- Fanan Falouji, M.D.Vernon Hills, IL 600611306855481
Common questions
What is David Ying Foong Chiou, M.D.'s NPI number?
David Ying Foong Chiou, M.D.'s National Provider Identifier (NPI) is 1093779084, issued on Apr 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Ying Foong Chiou, M.D. located?
The NPPES record lists a practice address at 157 N Seymour Ave, Mundelein, IL, 60060. Phone: (847) 566-0300. Providers update this record themselves, so call before visiting.
How can I verify David Ying Foong Chiou, M.D.'s license?
NPPES lists Illinois license number 036098964, 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 David Ying Foong Chiou, M.D. prescribe under Medicare Part D?
In 2024, David Ying Foong Chiou, M.D. had 9,462 Medicare Part D claims for 443 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.