Jennifer Marsidi, DO
Internal Medicine Physician · Chicago, IL
Jennifer Marsidi, DO is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1275713588, issued on Nov 5, 2007. Check the license (Illinois 125.077691, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Jennifer Marsidi
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 125.077691 IL
AP30007951 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1645 W Jackson Blvd Ste 215, Chicago, IL 60612
- Phone
- (312) 942-3254
- Enumerated
- Nov 5, 2007
- Record last updated
- May 24, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 1645 W Jackson Blvd Ste 215
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jennifer Marsidi 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 125.077691Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
26 Medicare Part D claims for 12 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.
Industry payments in 2024: $39.00
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). 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.
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 2,867 in Chicago → All 7,238 in Illinois → Every provider in Chicago →
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Common questions
What is Jennifer Marsidi, DO's NPI number?
Jennifer Marsidi, DO's National Provider Identifier (NPI) is 1275713588, issued on Nov 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer Marsidi, DO located?
The NPPES record lists a practice address at 1645 W Jackson Blvd Ste 215, Chicago, IL, 60612. Phone: (312) 942-3254. Providers update this record themselves, so call before visiting.
How can I verify Jennifer Marsidi, DO's license?
NPPES lists Illinois license number 125.077691, 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 Jennifer Marsidi, DO prescribe under Medicare Part D?
In 2024, Jennifer Marsidi, DO had 26 Medicare Part D claims for 12 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.