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GN ENDOCRINOLOGY LTD
NPI 1154799690
Internal Medicine - Endocrinology, Diabetes & Metabolism in Munster, IN

Active since September 14, 2015CLIA 15D2104845 · Waiver
10012 CALUMET AVE STE A, MUNSTER, IN 46321(219) 227-5119(219) 227-5190 Get Directions Write a Review

NPPES record last updated: October 29, 2020. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Oct 29, 2020, Jul 19, 2018, Apr 13, 2018 (3 updates tracked since 2018).

About Gn Endocrinology Ltd NPPES

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

GN ENDOCRINOLOGY LTD (NPI 1154799690) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Munster, Indiana and active in the NPI registry since September 2015. The organization holds a CLIA Waiver certificate valid through November 12, 2027, maintains a secondary practice location in Hobart, and lists Amer Kassar, Md/owner, as its authorized official.

NPPES Registry Identity

NPI1154799690
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NameGN ENDOCRINOLOGY LTD
Location Address10012 CALUMET AVE STE AMunster, IN 46321
Mailing Address10012 Calumet Ave Ste AMunster, IN 46321-4055 · (219) 227-5119 · Fax (219) 227-5190
Phone(219) 227-5119
Fax(219) 227-5190
Organization SubpartNo
Authorized OfficialAmer KassarMd/owner · (219) 227-5119
Enumeration DateSeptember 14, 2015
Last NPPES UpdateOctober 29, 20203 updates tracked since enumeration
NPPES CertifiedOctober 29, 2020
✔ NPI 1154799690 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

10012 CALUMET AVE STE A, Munster, IN 46321
Open in Google Maps ↗

Secondary Practice Location 1

Location 1174 Bracken PkwyHobart, IN 46342-6789 · Phone (219) 945-3070 · Fax (219) 940-9560

Other Identifiers 1

Medicaid201321970AIN

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

CLIA Laboratory Certificates CMS CLIA 3

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 15D2104845

Gn Endocrinology Ltd · Munster, IN
Active · expires Nov 12, 2027
CLIA Number15D2104845
Laboratory TypePhysician Office
Certificate Effective DateNovember 13, 2025
Certificate Expiration DateNovember 12, 2027
Laboratory DirectorAmer Kassar
Laboratory Phone(219) 227-5119
Laboratory LocationGn Endocrinology Ltd10012 Calumet Avenue, Suite A, Munster, IN 46321
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 15D2264350

Gn Endocrinology Ltd · Hobart, IN
Expired · Jul 12, 2026
CLIA Number15D2264350
Laboratory TypePhysician Office
Certificate Effective DateJuly 13, 2024
Certificate Expiration DateJuly 12, 2026
Laboratory DirectorAmer Kassar
Laboratory Phone(219) 227-5119
Laboratory LocationGn Endocrinology Ltd174 Bracken Pkwy, Hobart, IN 46342
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 15D2264353

Gn Endocrinology Ltd · Valparaiso, IN
Expired · Jul 12, 2026
CLIA Number15D2264353
Laboratory TypePhysician Office
Certificate Effective DateJuly 13, 2024
Certificate Expiration DateJuly 12, 2026
Laboratory DirectorAmer Kassar
Laboratory Phone(219) 227-5119
Laboratory LocationGn Endocrinology Ltd401 Wall Street Suite C, Valparaiso, IN 46383
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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.

LISA PORADZISZ
Nurse Practitioner (Family)
10012 CALUMET AVE STE A
MUNSTER, IN 46321
Lake County (219) 227-5119
MRS. KIRSTEN O'BLOCK BETKOWSKI FNP-C
Nurse Practitioner (Family)
10012 CALUMET AVE STE A
MUNSTER, IN 46321
Lake County (219) 227-5119
MRS. JACQUELYN RAQUEL ADLEY NP-C
Nurse Practitioner (Family)
10012 CALUMET AVE STE A
MUNSTER, IN 46321
Lake County (219) 227-5119
ANDREA DARROL
Nurse Practitioner (Family)
10012 CALUMET AVE STE A
MUNSTER, IN 46321
Lake County (219) 227-5119

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 Gn Endocrinology Ltd's NPI number?

The NPI number for Gn Endocrinology Ltd is 1154799690. It was assigned to this organization in the NPPES registry on September 14, 2015.

Where is Gn Endocrinology Ltd located?

Gn Endocrinology Ltd is located at 10012 Calumet Ave Ste A, Munster, IN 46321. The listed phone number is (219) 227-5119.

What is Gn Endocrinology Ltd's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Does Gn Endocrinology Ltd hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 15D2104845) is associated with this NPI, valid through November 12, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Gn Endocrinology Ltd accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource list Gn Endocrinology Ltd as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gn Endocrinology Ltd was last updated on October 29, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.