Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Daniel Garrison, MD

Works at hospitals in Chicago, IL · Illinois

Summary

Daniel Garrison, MD (Internal Medicine) is listed by Medicare at 1 hospital in Chicago, IL. NPI 1215913652. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Daniel Garrison, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
32Years since medical school (graduated 1994)
University Of Alabama School Of MedicineMedical school
MaleGender (as listed)
Advocate Health and Hospitals CorporationGroup practice

Quick answers

Which hospitals does Daniel Garrison work at?
Medicare's official clinician data lists Daniel Garrison at 1 hospital: Advocate Illinois Masonic Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Daniel Garrison see patients?
Medicare's clinician data lists 3 practice locations, including Buffalo Grove, IL and Chicago, IL. Call before your visit to confirm the address.
What is Daniel Garrison's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Daniel Garrison accept Medicare assignment?
Yes. Medicare's clinician data says Daniel Garrison accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Daniel Garrison?
(847) 459-1160, as listed in official Medicare / NPI Registry data.
What is Daniel Garrison's NPI number?
1215913652. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Daniel Garrison works

Medicare's Facility Affiliation Data lists Daniel Garrison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Daniel Garrison is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Daniel Garrison as a member of this group (CMS data updated 2026-10-02).

  • Advocate Health and Hospitals Corporation3,118 clinicians in the group

Specialties

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Buffalo Grove

Clinicians with the same Medicare primary specialty in Buffalo Grove, IL — not a recommendation.

All internal medicine doctors in Buffalo Grove →

Clinician information

CredentialMD
Medical schoolUniversity Of Alabama School Of Medicine
Graduation year1994
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1215913652
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians