Allan Tachauer, MD
Internal Medicine Physician · Chicago, IL
Allan Tachauer, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1679506489, issued on Jul 8, 2006. Check the license (Illinois 036-082927, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Allan Tachauer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-082927 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4824 N Sheridan RD, Chicago, IL 60640
- Phone
- (773) 564-7405
- Enumerated
- Jul 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 036082927 IL
- Medicare enrollment
- Enrolled (PECOS I20041001000980); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Allan Tachauer 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 036-082927Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
64 Medicare Part D claims for 19 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
2 hospitals and group practices
- Resilience Healthcare - Lakefront Medical Associates LLCOak Park, IL
- Thorek Memorial HospitalChicago, IL · Acute Care Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Allan Tachauer among 7,238 internal medicine physician records in Illinois
Allan Tachauer, MD 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
- Graduated1985 · median 2003 among the 3,580 with a school on file
- Record last updated2007 · 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
- Maher Al-Koubaytari, M.D.Chicago, IL 606401437124419
- Shehzad Ali, M.D.Chicago, IL 606401548233117
- Susan Alt, MDChicago, IL 606401255384277
- Emily Chatskis, MDChicago, IL 606401790771434
- Lorrie Elliott, M.D.Chicago, IL 606401265474191
- Aleksandra Ivanovic, MDChicago, IL 606401477546711
- Christopher Konstantelos, M.DChicago, IL 606401952330243
- Sean Le, M.D.Chicago, IL 606401578552915
Common questions
What is Allan Tachauer, MD's NPI number?
Allan Tachauer, MD's National Provider Identifier (NPI) is 1679506489, issued on Jul 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Allan Tachauer, MD located?
The NPPES record lists a practice address at 4824 N Sheridan RD, Chicago, IL, 60640. Phone: (773) 564-7405. Providers update this record themselves, so call before visiting.
How can I verify Allan Tachauer, MD's license?
NPPES lists Illinois license number 036-082927, 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 Allan Tachauer, MD prescribe under Medicare Part D?
In 2024, Allan Tachauer, MD had 64 Medicare Part D claims for 19 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.