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Obstetrics/Gynecology

Mary E. McCormack, DO

Works at hospitals in Munster, IN · Crown Point, IN · Gary, IN … · Indiana

Summary

Mary E. McCormack, DO (Obstetrics/Gynecology) is listed by Medicare at 4 hospitals in Munster, IN, Crown Point, IN and Gary, IN and other places. NPI 1104939958. 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 Mary E. McCormack, 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

Obstetrics/GynecologyPrimary specialty
YesAccepts Medicare assignment
39Years since medical school (graduated 1987)
Midwestern University, Chicago College Of Osteopathic MedMedical school
FemaleGender (as listed)
Franciscan Physician NetworkGroup practice

Quick answers

Which hospitals does Mary E. McCormack work at?
Medicare's official clinician data lists Mary E. McCormack at 4 hospitals: Community Hospital, Franciscan Health Crown Point, Methodist Hospitals Inc and St Mary Medical Center Inc. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Mary E. McCormack see patients?
Medicare's clinician data lists 4 practice locations, including Crown Point, IN, Shelbyville, IN and Crawfordsville, IN. Call before your visit to confirm the address.
What is Mary E. McCormack's specialty?
Medicare lists Obstetrics/Gynecology as the primary specialty.
Does Mary E. McCormack accept Medicare assignment?
Yes. Medicare's clinician data says Mary E. McCormack 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 Mary E. McCormack?
(317) 865-5904, as listed in official Medicare / NPI Registry data.
What is Mary E. McCormack's NPI number?
1104939958. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Mary E. McCormack works

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

Group practices

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

  • Franciscan Physician Network1,170 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in Indiana →

Other OB-GYNs in Crown Point

Clinicians with the same Medicare primary specialty in Crown Point, IN — not a recommendation.

All OB-GYNs in Crown Point →

Clinician information

CredentialDO
Medical schoolMidwestern University, Chicago College Of Osteopathic Med
Graduation year1987
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1104939958
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