Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LAKE HEART SPECIALISTS
NPI 1629063391
Internal Medicine - Cardiovascular Disease in Gurnee, IL

Active since September 19, 2005
731 S IL ROUTE 21 STE 110, GURNEE, IL 60031(847) 360-8440 Get Directions Write a Review

NPPES record last updated: October 29, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Lake Heart Specialists NPPES

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

LAKE HEART SPECIALISTS (NPI 1629063391), doing business as Drs. Jajeh & Koch Sc, is a healthcare organization registered as a cardiovascular disease in Gurnee, Illinois and active in the NPI registry since September 2005. The organization lists Raymond Bong Chow, Physician, as its authorized official.

NPPES Registry Identity

NPI1629063391
Entity TypeOrganization
Primary Taxonomy207RC0000X
Legal Business NameLAKE HEART SPECIALISTS
Location Address731 S IL ROUTE 21 STE 110Gurnee, IL 60031-3803
Mailing Address1870 W Winchester Rd Ste 241Libertyville, IL 60048-5360 · (847) 360-8440 · Fax (847) 360-8468
Organization SubpartNo
Authorized OfficialRaymond Bong ChowPhysician · (847) 549-0170
Enumeration DateSeptember 19, 2005
Last NPPES UpdateOctober 29, 2026
NPPES CertifiedOctober 29, 2026
✔ NPI 1629063391 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedRegistered Nurse · Cardiac RehabilitationTaxonomy 163WC3500X
731 S IL ROUTE 21 STE 110, Gurnee, IL 60031

Other Names 1

Doing Business AsDrs. Jajeh & Koch Sc

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lake Heart Specialists is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

8

Medicare enrollment records show 8 clinicians reassign Medicare billing to Lake Heart Specialists, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 8 within 10 miles. They are listed nearest first.

Clinicians, nearest first (8)

Nurse Practitioner
NPI 1861706160
731 S. IL-21 STE 110
Gurnee, IL 60031
(847) 360-8440
✔ PECOSSame address
Cardiovascular Disease (Cardiology)
NPI 1356369037
35 TOWER CT SUITE F
Gurnee, IL 60031
(847) 360-8440
✔ PECOS✔ Accepts Medicare2.2 mi
Cardiovascular Disease (Cardiology)
NPI 1285628982
35 TOWER CT STE F
Gurnee, IL 60031
(847) 360-8440
✔ PECOS✔ Accepts Medicare2.2 mi
Cardiovascular Disease (Cardiology)
NPI 1558355255
1870 W WINCHESTER RD STE 241
Libertyville, IL 60048
(847) 549-0170
✔ PECOS✔ Accepts Medicare4.7 mi
Nurse Practitioner
NPI 1790186955
1870 W WINCHESTER RD SUITE 241
Libertyville, IL 60048
(847) 549-0170
✔ PECOS4.7 mi
Cardiovascular Disease (Cardiology)
NPI 1962497974
1870 W WINCHESTER RD STE 241
Libertyville, IL 60048
(847) 549-0170
✔ PECOS✔ Accepts Medicare4.7 mi
Cardiovascular Disease (Cardiology)
NPI 1881688596
1870 W WINCHESTER RD STE 241
Libertyville, IL 60048
(847) 549-0170
✔ PECOS✔ Accepts Medicare4.7 mi
Cardiovascular Disease (Cardiology)
NPI 1730320235
1870 W WINCHESTER RD STE 241
Libertyville, IL 60048
(847) 549-0170
✔ PECOS✔ Accepts Medicare4.7 mi

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 Lake Heart Specialists's NPI number?

The NPI number for Lake Heart Specialists is 1629063391. It was assigned to this organization in the NPPES registry on September 19, 2005. The provider is doing business as Drs. Jajeh & Koch SC.

Where is Lake Heart Specialists located?

Lake Heart Specialists is located at 731 S Il Route 21 Ste 110, Gurnee, IL 60031. The listed phone number is (847) 360-8440.

What is Lake Heart Specialists's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Lake Heart Specialists enrolled in Medicare?

Yes. Lake Heart Specialists is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Lake Heart Specialists?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 2 Medicare specialties reassign their Medicare billing to Lake Heart Specialists. 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 Cardiovascular Disease (Cardiology) (6) and Nurse Practitioner (2). Of these, 1 practice at this address and 8 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Lake Heart Specialists accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Lake Heart Specialists 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 Lake Heart Specialists was last updated on October 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 days 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.