HEALTH SERVICE SYSTEMS, INC
NPI 1851323257
Internal Medicine in New Lenox, IL

Q: What is Health Service Systems, Inc's NPI number?

The NPI number for Health Service Systems, Inc is 1851323257. It was assigned to this organization in the NPPES registry on July 7, 2006.

Q: What is Health Service Systems, Inc's specialty?

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

Active since July 07, 2006

1851 SILVER CROSS BOULEVARD, SUITE 110, NEW LENOX, IL 60451(815) 300-3060 Get Directions Write a Review

NPPES record last updated: August 19, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 19, 2026, Aug 13, 2026, Nov 5, 2021 and 1 more (4 updates tracked since 2020).

On this page

About Health Service Systems, Inc NPPES

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

HEALTH SERVICE SYSTEMS, INC (NPI 1851323257) is a healthcare organization registered as an internal medicine in New Lenox, Illinois and active in the NPI registry since July 2006. The organization maintains a secondary practice location in New Lenox and lists Geoffrey Tryon, Vp Delegated Official, as its authorized official.

NPPES Registry Identity

NPI1851323257

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameHEALTH SERVICE SYSTEMS, INC

Location Address1851 SILVER CROSS BOULEVARD, SUITE 110New Lenox, IL 60451

Mailing Address1900 Silver Cross Blvd.New Lenox, IL 60432 · (815) 300-7106 · Fax (815) 774-4703

Phone(815) 300-3060

Organization SubpartNo

Authorized OfficialGeoffrey TryonVp Delegated Official · (815) 300-7112

Enumeration DateJuly 7, 2006

Last NPPES UpdateAugust 19, 20264 updates tracked since enumeration

NPPES CertifiedAugust 19, 2026

✔ NPI 1851323257 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in IL · 036-091635

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 ListedFamily MedicineTaxonomy 207Q00000X

Also ListedNeurological SurgeryTaxonomy 207T00000X

Also ListedSurgeryTaxonomy 208600000X

1851 SILVER CROSS BOULEVARD, SUITE 110, New Lenox, IL 60451

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Secondary Practice Location 1

Location 11900 Silver Cross Blvd.New Lenox, IL 60432 · Phone (815) 300-7106 · Fax (815) 774-4703

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

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)

Health Service Systems, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

133

Medicare enrollment records show 133 clinicians reassign Medicare billing to Health Service Systems, Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 75 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 12

Nurse Practitioner51

Family Practice30

Internal Medicine20

Diagnostic Radiology7

Emergency Medicine5

Advanced Heart Failure and Transplant Cardiology4

Gastroenterology4

Neurosurgery4

4 other specialties8

Nearest to this location (20)

See all 133

Tammy Ryan, APN

Nurse Practitioner

NPI 1962642504

1851 SILVER CROSS BLVD STE 110
New Lenox, IL 60451

(815) 300-3060

✔ PECOS✔ Accepts MedicareSame address

Jillian Aleck

Nurse Practitioner

NPI 1932879038

1870 SILVER CROSS BLVD STE 200
New Lenox, IL 60451

(815) 462-3474

✔ PECOS0.1 mi

Thomas Lee, M.D.

Family Practice

NPI 1174588628

1890 SILVER CROSS BLVD SUITE 370
New Lenox, IL 60451

(815) 300-1450

✔ PECOS✔ Accepts Medicare0.1 mi

Farooq Hussain, MD

Family Practice

NPI 1942509369

1890 SILVER CROSS BLVD SUITE 370
New Lenox, IL 60451

(815) 300-1450

✔ PECOS✔ Accepts Medicare0.1 mi

Laura Scott, FNP

Nurse Practitioner

NPI 1467768358

1890 SILVER CROSS BLVD LOWER LEVEL
New Lenox, IL 60451

(815) 300-7323

✔ PECOS0.1 mi

Tiffany Groen, D.O.

Family Practice

NPI 1609019538

1900 SILVER CROSS BLVD STE 120
New Lenox, IL 60451

(815) 469-8806

✔ PECOS✔ Accepts Medicare0.1 mi

Kristen Mars, FNP-BC

Nurse Practitioner

NPI 1568993962

1900 SILVER CROSS BLVD
New Lenox, IL 60451

(708) 364-6337

✔ PECOS✔ Accepts Medicare0.1 mi

David Mikolajczak, D.O.

Emergency Medicine

NPI 1255368395

1900 SILVER CROSS BLVD SILVER CROSS HOSPITAL
New Lenox, IL 60451

(815) 740-1100

✔ PECOS0.1 mi

Rebecca Mireles, NP

Nurse Practitioner

NPI 1972144715

1900 SILVER CROSS BLVD
New Lenox, IL 60451

(815) 300-1100

✔ PECOS0.1 mi

Jeffrey Money, NP-C

Nurse Practitioner

NPI 1922406313

1900 SILVER CROSS BLVD
New Lenox, IL 60451

(815) 300-3955

✔ PECOS✔ Accepts Medicare0.1 mi

Mark Veldman, D.O,

Family Practice

NPI 1922108224

1900 SILVER CROSS BLVD STE 120
New Lenox, IL 60451

(815) 300-1100

✔ PECOS0.1 mi

Rameez Alasadi, MD

Gastroenterology

NPI 1568452712

1890 SILVER CROSS BLVD STE 275
New Lenox, IL 60451

(815) 300-7764

✔ PECOS✔ Accepts Medicare0.1 mi

Bridget Ehman

Nurse Practitioner

NPI 1386188365

1890 SILVER CROSS BLVD
New Lenox, IL 60451

(708) 691-1172

✔ PECOS✔ Accepts Medicare0.1 mi

Husam Marsheh, M.D.

Obstetrics/Gynecology

NPI 1154427219

1890 SILVER CROSS BLVD STE 315
New Lenox, IL 60451

(815) 300-7764

✔ PECOS✔ Accepts Medicare0.1 mi

Omar Akhtar, D.O.

Family Practice

NPI 1386099133

1890 SILVER CROSS BLVD STE 275
New Lenox, IL 60451

(815) 727-4292

✔ PECOS✔ Accepts Medicare0.1 mi

Ahmed Hussain, MD

Internal Medicine

NPI 1407936974

1890 SILVER CROSS BLVD STE 265
New Lenox, IL 60451

(815) 741-3532

✔ PECOS✔ Accepts Medicare0.1 mi

Zafer Jawich, M.D.

Internal Medicine

NPI 1326064536

1890 SILVER CROSS BLVD STE 350
New Lenox, IL 60451

(815) 717-8737

✔ PECOS✔ Accepts Medicare0.1 mi

M Ghaith Mulki, M.D.

Internal Medicine

NPI 1215953369

1890 SILVER CROSS BLVD STE 350
New Lenox, IL 60451

(815) 717-8737

✔ PECOS✔ Accepts Medicare0.1 mi

William Bremer, MD

Diagnostic Radiology

NPI 1770960007

1900 SILVER CROSS BLVD
New Lenox, IL 60451

(815) 300-1100

✔ PECOS✔ Accepts Medicare0.2 mi

Ramzy Khabbaz

Diagnostic Radiology

NPI 1821550880

1900 SILVER CROSS BLVD
New Lenox, IL 60451

(309) 740-4272

✔ PECOS✔ Accepts Medicare0.2 mi

See all 133 clinicians

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

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 Health Service Systems, Inc's NPI number?

The NPI number for Health Service Systems, Inc is 1851323257. It was assigned to this organization in the NPPES registry on July 7, 2006.

Where is Health Service Systems, Inc located?

Health Service Systems, Inc is located at 1851 Silver Cross Boulevard, Suite 110, New Lenox, IL 60451. The listed phone number is (815) 300-3060.

What is Health Service Systems, Inc's specialty?

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

Is Health Service Systems, Inc enrolled in Medicare?

Yes. Health Service Systems, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Health Service Systems, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 133 clinicians in 12 Medicare specialties reassign their Medicare billing to Health Service Systems, Inc. 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. The largest specialties are Nurse Practitioner (51), Family Practice (30) and Internal Medicine (20). Of these, 1 practice at this address and 75 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Health Service Systems, Inc accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Health Service Systems, Inc 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 Health Service Systems, Inc was last updated on August 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.