Susan Louise Alt, MD
Internal Medicine Physician · Chicago, IL
Susan Louise Alt, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1255384277, issued on May 19, 2006. Check the license (Illinois 036-107356, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Susan Louise Alt
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036-107356 IL
036107356 IL
Self-reported in NPPES; status is on the state search - Practice location
- Andersonville Internal Medicine, Chicago, IL 60640
- Phone
- (773) 500-0246
- Enumerated
- May 19, 2006
- Record last updated
- May 28, 2025
- Fax
- (773) 825-8299
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Susan Louise Alt 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 036-107356Check 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
353 Medicare Part D claims for 39 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Atorvastatin Calcium30 claims
- Amlodipine Besylate24 claims
- Rosuvastatin Calcium22 claims
- Synthroid19 claims
- Levothyroxine Sodium18 claims
- Losartan Potassium14 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Susan Louise Alt among 7,238 internal medicine physician records in Illinois
Susan Louise Alt, 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 fileNo · 50% of these records are
- Record last updated2025 · 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
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- Shehzad Ali, M.D.Chicago, IL 606401548233117
- 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
- Stephanie Luther, M.D.Chicago, IL 606401134196231
Common questions
What is Susan Louise Alt, MD's NPI number?
Susan Louise Alt, MD's National Provider Identifier (NPI) is 1255384277, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan Louise Alt, MD located?
The NPPES record lists a practice address at Andersonville Internal Medicine, Chicago, IL, 60640. Phone: (773) 500-0246. Providers update this record themselves, so call before visiting.
How can I verify Susan Louise Alt, MD's license?
NPPES lists Illinois license number 036-107356, 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 Susan Louise Alt, MD prescribe under Medicare Part D?
In 2024, Susan Louise Alt, MD had 353 Medicare Part D claims for 39 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Susan Louise Alt, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.