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Family Practice

Tiffany E. Groen, DO

Works at hospitals in Oak Lawn, IL · Chicago, IL · Harvey, IL … · Illinois

Summary

Tiffany E. Groen, DO (Family Practice) is listed by Medicare at 5 hospitals in Oak Lawn, IL, Chicago, IL and Harvey, IL and other places. NPI 1609019538. 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 Tiffany E. Groen, 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

Family PracticePrimary specialty
YesAccepts Medicare assignment
17Years since medical school (graduated 2009)
FemaleGender (as listed)
Health Service Systems, IncGroup practice

Quick answers

Which hospitals does Tiffany E. Groen work at?
Medicare's official clinician data lists Tiffany E. Groen at 5 hospitals: Advocate Christ Hospital & Medical Center, Advocate Trinity Hospital, Ingalls Memorial Hospital, Palos Community Hospital and Silver Cross Hospital and Medical Centers. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Tiffany E. Groen see patients?
Medicare's clinician data lists 2 practice locations, including New Lenox, IL. Call before your visit to confirm the address.
What is Tiffany E. Groen's specialty?
Medicare lists Family Practice as the primary specialty, and also Preventive Medicine.
Does Tiffany E. Groen accept Medicare assignment?
Yes. Medicare's clinician data says Tiffany E. Groen 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 Tiffany E. Groen?
(815) 727-4292, as listed in official Medicare / NPI Registry data.
What is Tiffany E. Groen's NPI number?
1609019538. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Tiffany E. Groen works

Medicare's Facility Affiliation Data lists Tiffany E. Groen 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 Tiffany E. Groen is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Tiffany E. Groen as a member of this group (CMS data updated 2026-10-02).

  • Health Service Systems, Inc68 clinicians in the group

Specialties

Find other Family Practice doctors in Illinois →

Other family doctors in New Lenox

Clinicians with the same Medicare primary specialty in New Lenox, IL — not a recommendation.

All family doctors in New Lenox →

Clinician information

CredentialDO
Graduation year2009
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1609019538
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