NPPES file of Aug 9, 2026

Anita J. Shanker

Internal Medicine Physician · Chicago, IL

Anita J. Shanker is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1669000436, issued on Mar 29, 2020. Check the license (Illinois 036161922, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669000436
Name
Anita J. Shanker
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
036161922 IL
Self-reported in NPPES; status is on the state search
Practice location
1776 N Milwaukee Ave, Chicago, IL 60647
Phone
(312) 926-3627
Enumerated
Mar 29, 2020
Record last updated
Sep 16, 2024
Fax
(773) 862-1454
Medicare enrollment
Enrolled (PECOS I20240906004046); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1776 N Milwaukee Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Eric Chung, MDInternal Medicine Physician1740786326
  2. Sherry D'Souza, M.D.Internal Medicine Physician1679911333
  3. Christopher Miller, M.D.Internal Medicine Physician1154557429
  4. Ewa PastuszewskaMental Health Counselor1871041301
  5. Nikita Pillai, MDInternal Medicine Physician1861079303
  6. Sarah Sefcovic, MDPediatrics Physician1306231931

Verify Anita J. Shanker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 036161922
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Illinois license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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96% fewer Medicare Part D claims than the average internal medicine physician in 2024

112 Medicare Part D claims for 38 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. Anita Shanker112
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium12 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 one group practice

  1. Northwestern Medical Faculty FoundationChicago, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Anita J. Shanker among 7,238 internal medicine physician records in Illinois

Anita J. Shanker 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 2020, is newer than 71% of them.

  • NPI issued2020 · 71% of these records are older, 26% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2020 · 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).

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.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Darius Bartkus, M.D.Chicago, IL 606471093836629
  2. Stanley Bialowas, MDChicago, IL 606471063518744
  3. Emily Chacko, M.D.Chicago, IL 606471649205063
  4. Mauricio Consalter, M.D.Chicago, IL 606471083653927
  5. Sherry D'Souza, M.D.Chicago, IL 606471679911333
  6. Ramon Garcia, M.DChicago, IL 606471235295999
  7. Harold Jaimes, M.D.Chicago, IL 606471770526279
  8. Sona Kalousdian, MD, MPHChicago, IL 606471790025880

Common questions

What is Anita J. Shanker's NPI number?

Anita J. Shanker's National Provider Identifier (NPI) is 1669000436, issued on Mar 29, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Anita J. Shanker located?

The NPPES record lists a practice address at 1776 N Milwaukee Ave, Chicago, IL, 60647. Phone: (312) 926-3627. Providers update this record themselves, so call before visiting.

How can I verify Anita J. Shanker's license?

NPPES lists Illinois license number 036161922, 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 Anita J. Shanker prescribe under Medicare Part D?

In 2024, Anita J. Shanker had 112 Medicare Part D claims for 38 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.