St Margaret Mercy Healthcare Centers, Inc.
NPI 1184703746 · Internal Medicine Physician · Chicago, IL
St Margaret Mercy Healthcare Centers, Inc. is a Internal Medicine Physician organization in Chicago, IL (NPI 1184703746).
Provider details
- NPI number
- 1184703746
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Thomas Gryzbek, President(219) 932-2300
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Family Medicine Physician207Q00000X
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Hegewisch Health Center
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2025-09-11
Frequently asked questions
- What is St Margaret Mercy Healthcare Centers, Inc.'s NPI number?
- St Margaret Mercy Healthcare Centers, Inc.'s National Provider Identifier (NPI) is 1184703746, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is St Margaret Mercy Healthcare Centers, Inc.?
- St Margaret Mercy Healthcare Centers, Inc. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is St Margaret Mercy Healthcare Centers, Inc. located?
- St Margaret Mercy Healthcare Centers, Inc.'s practice location on file with NPPES is 3340 E 134th St, Chicago, IL 60633-1539.
- What is St Margaret Mercy Healthcare Centers, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for St Margaret Mercy Healthcare Centers, Inc. is (773) 646-3831.
- Who is the authorized official for St Margaret Mercy Healthcare Centers, Inc.?
- The authorized official listed on St Margaret Mercy Healthcare Centers, Inc.'s NPPES record is Thomas Gryzbek, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is St Margaret Mercy Healthcare Centers, Inc.'s NPI active?
- Yes — St Margaret Mercy Healthcare Centers, Inc.'s NPI (1184703746) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.