NPPES file of Aug 9, 2026

Heather Elizabeth Allen, MD

Hospitalist Physician · Chicago, IL

Heather Elizabeth Allen, MD is a hospitalist physician with a practice address in Chicago, Illinois, and NPI 1083108955, issued on Jun 14, 2018. Check the license (Illinois 036.158027, 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
1083108955
Name
Heather Elizabeth Allen
Credential
MD
Primary taxonomy
Hospitalist Physician 208M00000X
License numbers
036.158027 IL
125.072809 IL
Self-reported in NPPES; status is on the state search
Practice location
1901 W Harrison St, Chicago, IL 60612
Phone
(312) 864-6000
Enumerated
Jun 14, 2018
Record last updated
Dec 20, 2022
Medicare enrollment
Enrolled (PECOS I20211208002592); accepts Medicare assignment
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 1901 W Harrison St

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

  1. Elias Abate, M.D.Internal Medicine Physician1336712199
  2. Ayesha Abbasi, MDInternal Medicine Physician1376216705
  3. Milagros Abellera, APNNurse Practitioner1528076239
  4. Annette Abraham, MDInfectious Disease Physician1083195093
  5. Fidel Abrego, MDObstetrics & Gynecology Physician1245351824
  6. Bryan Acevedo, MDInternal Medicine Physician1598459612

Verify Heather Elizabeth Allen 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 036.158027
    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

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44% fewer Medicare Part D claims than the average hospitalist physician in 2024

290 Medicare Part D claims for 139 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 17 claims were for opioids.

  1. Heather Allen290
  2. Specialty average521

Most prescribed

  1. Prednisone16 claims
  2. Furosemide14 claims
  3. Pantoprazole Sodium14 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.

Industry payments in 2024: $84.35

3 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Heather Allen$84.35
  2. Specialty average$494.84

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Loyola University Medical CenterMaywood, IL · Acute Care Hospitals2 of 5 stars

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). Star ratings are CMS hospital ratings, not ratings of this provider.

Heather Elizabeth Allen among 1,535 hospitalist physician records in Illinois

Heather Elizabeth Allen, MD is one of 1,535 hospitalist physician records with a practice address in Illinois. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 68% of them.

  • NPI issued2018 · 68% of these records are older, 27% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileYes · 87% of these records are
  • Graduated2018 · median 2013 among the 1,339 with a school on file
  • Record last updated2022 · 32% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in Illinois

There are 1,535 hospitalist physician records in Illinois.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Catherine Dimou, M.D.Chicago, IL 606121073615076
  2. Ann Goh, M.D.Chicago, IL 606121013019728
  3. Dorian Guerra, M.D.Chicago, IL 606121053590430
  4. Scott Hasler, M.D.Chicago, IL 606121619079282
  5. Syed Hassan, M.D.Chicago, IL 606121902014962
  6. Richard Huh, M.D.Chicago, IL 606121487742409
  7. Jisu Kim, M.D.Chicago, IL 606121275645871
  8. Rudolf Kumapley, MBCHBChicago, IL 606121932138922

Common questions

What is Heather Elizabeth Allen, MD's NPI number?

Heather Elizabeth Allen, MD's National Provider Identifier (NPI) is 1083108955, issued on Jun 14, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Heather Elizabeth Allen, MD located?

The NPPES record lists a practice address at 1901 W Harrison St, Chicago, IL, 60612. Phone: (312) 864-6000. Providers update this record themselves, so call before visiting.

How can I verify Heather Elizabeth Allen, MD's license?

NPPES lists Illinois license number 036.158027, 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 Heather Elizabeth Allen, MD prescribe under Medicare Part D?

In 2024, Heather Elizabeth Allen, MD had 290 Medicare Part D claims for 139 beneficiaries; the average among hospitalist physician prescribers was 521. 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.