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H & S HEALTH SPECIALISTS LLC
NPI 1891054631
Internal Medicine in Chicago, IL

Active since May 14, 2012CLIA 14D2255225 · Waiver
1631 N HALSTED ST, CHICAGO, IL 60614(219) 671-8104(219) 865-8788 Get Directions Write a Review

NPPES record last updated: May 14, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About H & S Health Specialists Llc NPPES

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

H & S HEALTH SPECIALISTS LLC (NPI 1891054631) is a healthcare organization registered as an internal medicine in Chicago, Illinois and active in the NPI registry since May 2012. The organization holds a CLIA Waiver certificate valid through December 17, 2027 and lists Asrar A Sheikh, President, as its authorized official.

NPPES Registry Identity

NPI1891054631
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameH & S HEALTH SPECIALISTS LLC
Location Address1631 N HALSTED STChicago, IL 60614-5517
Mailing Address1631 N Halsted StChicago, IL 60614-5517 · (219) 671-8104 · Fax (219) 865-8788
Phone(219) 671-8104
Fax(219) 865-8788
Organization SubpartNo
Authorized OfficialAsrar A SheikhPresident · (312) 787-9199
Enumeration DateMay 14, 2012
✔ NPI 1891054631 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036113486
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.
1631 N HALSTED ST, Chicago, IL 60614
Open in Google Maps ↗

Other Identifiers 2

Medicaid036113486IL
Medicare UPINI31806

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 Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

H & S Health Specialists Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to H & S Health Specialists LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Gabriela Contreras
Nurse Practitioner
NPI 1275306888
1631 N HALSTED ST
Chicago, IL 60614
(312) 787-9199
✔ PECOS✔ Accepts MedicareSame address
Sajid Mahmood, M.D.
Internal Medicine
NPI 1700238813
3505 GREEN BAY RD 304A
North Chicago, IL 60064
(312) 385-9432
✔ PECOS✔ Accepts Medicare29 mi
Asrar Sheikh, M.D.
Internal Medicine
NPI 1982631875
1217 US HIGHWAY 41
Schererville, IN 46375
(219) 440-7351
✔ PECOS✔ Accepts Medicare30 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

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 14D2255225

H & S Health Specialists, LLC · Chicago, IL
Active · expires Dec 17, 2027
CLIA Number14D2255225
Laboratory TypePhysician Office
Certificate Effective DateDecember 18, 2025
Certificate Expiration DateDecember 17, 2027
Laboratory DirectorAsrar A. Sheikh
Laboratory Phone(773) 942-7475
Laboratory LocationH & S Health Specialists, LLC2338 W Morse Ave #1, Chicago, IL 60645
CLIA data matches this NPI record on: Name
This certificate is issued to a laboratory to perform only waived tests.

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 H & S Health Specialists LLC's NPI number?

The NPI number for H & S Health Specialists LLC is 1891054631. It was assigned to this organization in the NPPES registry on May 14, 2012.

Where is H & S Health Specialists LLC located?

H & S Health Specialists LLC is located at 1631 N Halsted St, Chicago, IL 60614. The listed phone number is (219) 671-8104.

What is H & S Health Specialists LLC's specialty?

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

Is H & S Health Specialists LLC enrolled in Medicare?

Yes. H & S Health Specialists LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through H & S Health Specialists LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to H & S Health Specialists LLC, in Internal Medicine and Nurse Practitioner. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does H & S Health Specialists LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D2255225) is associated with this NPI, valid through December 17, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does H & S Health Specialists LLC accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list H & S Health Specialists LLC 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 H & S Health Specialists LLC was last updated on May 14, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.