Individual provider

Andrew Wilmington, MD

Internal Medicine Physician Medical Oncology Physician Hematology & Oncology Physician Medicare enrolled

Andrew Wilmington, MD is a Hospitalist Physician in Chicago, IL, registered under NPI 1891255840. This provider registers 4 separate taxonomy codes, which usually means they practise across more than one recognised specialty.

Getting there

The practice address on file is 1520 W HARRISON ST, Chicago, IL 60607. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

1520 W HARRISON ST, Chicago, IL 60607 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
036.164165 IL Internal Medicine Physician
036.164165 IL Medical Oncology Physician
036.164165 IL Hematology & Oncology Physician
036164165 IL Hospitalist Physician primary

This provider holds licence 036.164165 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.

Medicare (PECOS)
Status
Approved
Provider type
Practitioner - Internal Medicine
PAC ID
2668705120

Enrolled in Medicare 2 times, across 2 states:

StateEnrollment IDProvider type
Washington I20220518002574 Practitioner - Internal Medicine
Illinois I20250225002390 Practitioner - Hospitalist

Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. There are 2 separate enrolment records across 2 states (WA, IL). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.

What Hospitalist covers

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients. NUCC Health Care Provider Taxonomy, code 208M00000X
Allopathic & Osteopathic Physicians Hospitalist

All registered taxonomy codes

This provider registers 4 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
207R00000X Internal Medicine Physician 036.164165 IL
207RX0202X Medical Oncology Physician Medical Oncology 036.164165 IL
207RH0003X Hematology & Oncology Physician Hematology & Oncology 036.164165 IL
208M00000X Hospitalist Physician 036164165 IL primary

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1891255840 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateMar 24, 2019
Last updatedAug 26, 2026
StatusActive
Sole proprietorNo
GenderMale
CredentialMD
Practice address 1520 W HARRISON ST
Chicago, IL 60607
(312) 942-5904
This record was updated on Aug 26, 2026, which is recent enough that the contact details are likely still accurate.

Number check

1891255840 passes the NPI check digit test The final digit 0 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 8 9 1 2 5 5 8 4
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 8 9 1 4 5 1 8 8

Sum = 70 · next multiple of 10 = 70 · check digit = 0 · actual last digit = 0

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1891255840?
NPI 1891255840 is the National Provider Identifier assigned to Andrew Wilmington, MD in Chicago, IL. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Hospitalist Physician cover?
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for…
How do I contact Andrew Wilmington, MD?
The phone number on file with NPPES is (312) 942-5904, last updated Aug 26, 2026. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Does Andrew Wilmington, MD accept Medicare?
This NPI has an approved Medicare enrolment in PECOS, which means the provider is enrolled to bill Medicare. Enrolment does not guarantee they are accepting new Medicare patients — verify directly with the office.
Is NPI 1891255840 a valid number?
Yes. 1891255840 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.