Isaac Tan, M.D.
Internal Medicine Physician · Peoria, IL
Isaac Tan, M.D. is an internal medicine physician with a practice address in Peoria, Illinois, and NPI 1710336631, issued on Jun 10, 2016. Check the license (Illinois 036149687, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Isaac Tan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036149687 IL
125069233 IL
Self-reported in NPPES; status is on the state search - Practice location
- 530 NE Glen Oak Ave, Peoria, IL 61637
- Phone
- (217) 521-3074
- Enumerated
- Jun 10, 2016
- Record last updated
- Dec 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20190730002108); accepts Medicare assignment
- Medical or professional school
- Southern Illinois University School Of Medicine, 2016
- 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 530 NE Glen Oak Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bassel Abouzeid, MDObstetrics & Gynecology Physician1376160846
- Susan Abraham, M.D.Internal Medicine Physician1598926818
- Angela AdamsOccupational Therapist1124564802
Verify Isaac Tan 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 036149687Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average internal medicine physician in 2024
10,837 Medicare Part D claims for 1,024 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. 267 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,024 claims
- Losartan Potassium546 claims
- Amlodipine Besylate440 claims
- Levothyroxine Sodium422 claims
- Lisinopril418 claims
- Omeprazole321 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 2 group practices
- Osf Multi-Specialty GroupPeoria, IL
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Isaac Tan among 7,238 internal medicine physician records in Illinois
Isaac Tan, 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 2016, is newer than 63% of them.
- NPI issued2016 · 63% of these records are older, 36% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2016 · 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).
173 internal medicine physician records list a practice address in Peoria
They are 173 of the 4,621 NPPES records with a practice address in Peoria, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Peoria → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Meenakshy Aiyer, MDPeoria, IL 616371346213170
- Antoine Daccache, MDPeoria, IL 616371336255611
- Jacqueline Fischer, MDPeoria, IL 616371417921024
- James Graumlich, MDPeoria, IL 616371366417685
- Jessica Hanks, M.D.Peoria, IL 616371952525222
- Richard Harvey, MDPeoria, IL 616371740259068
- Ghaly Kerolus, MDPeoria, IL 616371669433611
- Christopher Martin, MDPeoria, IL 616371043285315
Common questions
What is Isaac Tan, M.D.'s NPI number?
Isaac Tan, M.D.'s National Provider Identifier (NPI) is 1710336631, issued on Jun 10, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Isaac Tan, M.D. located?
The NPPES record lists a practice address at 530 NE Glen Oak Ave, Peoria, IL, 61637. Phone: (217) 521-3074. Providers update this record themselves, so call before visiting.
How can I verify Isaac Tan, M.D.'s license?
NPPES lists Illinois license number 036149687, 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 Isaac Tan, M.D. prescribe under Medicare Part D?
In 2024, Isaac Tan, M.D. had 10,837 Medicare Part D claims for 1,024 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.