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GUIDESTAR ELDERCARE - IL SC
NPI 1417591074
Internal Medicine in Schaumburg, IL

Active since November 06, 2019
1821 WALDEN OFFICE SQ STE 400, SCHAUMBURG, IL 60173(574) 546-1900(574) 546-1999 Get Directions Write a Review

NPPES record last updated: April 24, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 16, 2021, Nov 10, 2021, Jul 20, 2021 and 10 more (13 updates tracked since 2019).

About Guidestar Eldercare - Il Sc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GUIDESTAR ELDERCARE - IL SC (NPI 1417591074), doing business as Vanguard Eldercare - Illinois, S.c., is a healthcare organization registered as an internal medicine in Schaumburg, Illinois and active in the NPI registry since November 2019. The organization maintains a secondary practice location in Chicago and lists Steven Posar, Ceo, as its authorized official.

NPPES Registry Identity

NPI1417591074
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameGUIDESTAR ELDERCARE - IL SC
Location Address1821 WALDEN OFFICE SQ STE 400Schaumburg, IL 60173-4273
Mailing AddressPo Box 10633Fort Wayne, IN 46853-0633 · (574) 546-1900 · Fax (574) 546-1999
Phone(574) 546-1900
Fax(574) 546-1999
Organization SubpartNo
Authorized OfficialSteven PosarCeo · (574) 546-1900
Enumeration DateNovember 6, 2019
Last NPPES UpdateApril 24, 202513 updates tracked since enumeration
NPPES CertifiedApril 16, 2025
✔ NPI 1417591074 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 9

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedCounselor · Mental HealthTaxonomy 101YM0800X
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X
Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X
Also ListedNurse PractitionerTaxonomy 363L00000X
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X
Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X
Also ListedNurse Practitioner · Psychiatric/Mental HealthTaxonomy 363LP0808X
1821 WALDEN OFFICE SQ STE 400, Schaumburg, IL 60173
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Other Names 1

Doing Business AsVanguard Eldercare - Illinois, S.c.

Secondary Practice Location 1

Location 11440 N Lake Shore Dr Apt 12DChicago, IL 60610-5909 · Phone (574) 546-1900 · Fax (574) 546-1999

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MR. AMARJIT SINGH KULAR
Specialist
1821 WALDEN OFFICE SQ STE 400
SCHAUMBURG, IL 60173
Cook County (224) 325-4327
FIRST EAR, INC.
Hearing Aid Equipment
1821 WALDEN OFFICE SQ STE 400
SCHAUMBURG, IL 60173
Cook County (224) 325-4327
DR. LORI ANN BOLNICK PSY.D.
Psychologist (Clinical)
1821 WALDEN OFFICE SQ STE 400
SCHAUMBURG, IL 60173
Cook County (224) 220-0277
LUMITYCARE MEDICAL TRANSPORT LLC
Non-emergency Medical Transport (VAN)
1821 WALDEN OFFICE SQ STE 400
SCHAUMBURG, IL 60173
Cook County (224) 531-8011

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Guidestar Eldercare - Il Sc's NPI number?

The NPI number for Guidestar Eldercare - Il Sc is 1417591074. It was assigned to this organization in the NPPES registry on November 6, 2019. The provider is doing business as Vanguard Eldercare - Illinois, S.C..

Where is Guidestar Eldercare - Il Sc located?

Guidestar Eldercare - Il Sc is located at 1821 Walden Office Sq Ste 400, Schaumburg, IL 60173. The listed phone number is (574) 546-1900.

What is Guidestar Eldercare - Il Sc's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Guidestar Eldercare - Il Sc was last updated on April 24, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.