Joseph Guan, MD, MPH
Internal Medicine Physician · Olympia Fields, IL
Joseph Guan, MD, MPH is an internal medicine physician with a practice address in Olympia Fields, Illinois, and NPI 1154986404, issued on May 2, 2019. Check the license (Illinois 036168139, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Joseph Guan
- Credential
- MD, MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036168139 IL
125-077739 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3700 W 203RD St Ste 301, Olympia Fields, IL 60461
- Phone
- (708) 679-2850
- Enumerated
- May 2, 2019
- Record last updated
- Sep 23, 2024
- Fax
- (708) 503-3811
- Medicare enrollment
- Enrolled (PECOS I20240724002701); 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 7,238 in Illinois → Look up another NPI →
Also registered at 3700 W 203RD St Ste 301
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sydney Lafrenier, PA-CPhysician Assistant1548083819
- Justin Li, DOHospitalist Physician1689289977
Verify Joseph Guan 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 036168139Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
360 Medicare Part D claims for 172 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Amlodipine Besylate24 claims
- Nifedipine Er20 claims
- Atorvastatin Calcium17 claims
- Losartan Potassium17 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: $31.89
2 payments; by number, the most common kind was food and beverage; the largest payer was Exact Sciences Corporation. 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
- Specialty Physicians OF Illinois LLCOlympia Fields, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Guan among 7,238 internal medicine physician records in Illinois
Joseph Guan, MD, MPH 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 2019, is newer than 68% of them.
- NPI issued2019 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2021 · median 2003 among the 3,580 with a school on file
- Record last updated2024 · 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).
23 internal medicine physician records list a practice address in Olympia Fields
They are 23 of the 684 NPPES records with a practice address in Olympia Fields, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Olympia Fields → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Julie Brandies, M.D.Olympia Fields, IL 604611467405472
- Muhammad Choudry, MDOlympia Fields, IL 604611720074701
- Brian Dyson, DOOlympia Fields, IL 604611346626041
- Mohammed Hussain, MDOlympia Fields, IL 604611942466545
- Rabia Jawed, DOOlympia Fields, IL 604611962907816
- Sanjeev Joshi, M.D.Olympia Fields, IL 604611962467563
- Jacob Kalliath, D.O.Olympia Fields, IL 604611134569395
- Savio Manatt, M.D.Olympia Fields, IL 604611063585032
Common questions
What is Joseph Guan, MD, MPH's NPI number?
Joseph Guan, MD, MPH's National Provider Identifier (NPI) is 1154986404, issued on May 2, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Guan, MD, MPH located?
The NPPES record lists a practice address at 3700 W 203RD St Ste 301, Olympia Fields, IL, 60461. Phone: (708) 679-2850. Providers update this record themselves, so call before visiting.
How can I verify Joseph Guan, MD, MPH's license?
NPPES lists Illinois license number 036168139, 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 Joseph Guan, MD, MPH prescribe under Medicare Part D?
In 2024, Joseph Guan, MD, MPH had 360 Medicare Part D claims for 172 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.