Ari Katz, MD - Medicare Hospitalist in Lake Forest, IL

Ari Katz, MD is a medicare enrolled "Internal Medicine" physician in Lake Forest, Illinois. He graduated from medical school in 2015 and has 9 years of diverse experience with area of expertise as Hospitalist. He is a member of the group practice Forward Focus Medical Care Llc and his current practice location is 990 S Waukegan Rd Ste 200, Lake Forest, Illinois. You can reach out to his office (for appointments etc.) via phone at (847) 234-8100.

Ari Katz is licensed to practice in Illinois (license number 036146174) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1902290828.

Contact Information

Ari Katz, MD
990 S Waukegan Rd Ste 200,
Lake Forest, IL 60045-2655
(847) 234-8100
(847) 234-8199

Map and Direction




Physician's Profile

Full NameAri Katz
GenderMale
SpecialityHospitalist
Experience9 Years
Location990 S Waukegan Rd Ste 200, Lake Forest, Illinois
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Ari Katz graduated from medical school in 2015
  NPI Data:
  • NPI Number: 1902290828
  • Provider Enumeration Date: 03/28/2015
  • Last Update Date: 09/05/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 4688974678
  • Enrollment ID: I20180611002877

Medical Identifiers

Medical identifiers for Ari Katz such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1902290828NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 036146174 (Illinois)Primary
208M00000XHospitalist 036146174 (Illinois)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northshore University Healthsystem - Evanston HospitalEvanston, ILHospital
Northwestern Lake Forest HospitalLake forest, ILHospital
Northwestern Memorial HospitalChicago, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Forward Focus Medical Care Llc29614024826

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Ari Katz allows following entities to bill medicare on his behalf.
Entity NameNorthwestern Medical Faculty Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346235314
PECOS PAC ID: 4587576814
Enrollment ID: O20031105000541
Entity NameForward Focus Medical Care Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245314616
PECOS PAC ID: 2961402482
Enrollment ID: O20070108000260

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Ari Katz is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Ari Katz, MD
990 S Waukegan Rd Ste 200,
Lake Forest, IL 60045-2655

Ph: (478) 234-8100
Ari Katz, MD
990 S Waukegan Rd Ste 200,
Lake Forest, IL 60045-2655

Ph: (847) 234-8100

Reviews and Comments


Internal Medicine Doctors in Lake Forest, IL

Dr. Jason T Garti, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 800 N Westmoreland Rd, Suite 100, Lake Forest, IL 60045
Phone: 847-234-8866    Fax: 824-234-4682
Dr. Vikram Kanakayya Devisetty, M.D., M.B.A., M.P.H.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 660 N Westmoreland Rd, Lake Forest, IL 60045
Phone: 847-234-5600    
Mariam Anis, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1000 N Westmoreland Rd # Level1, Lake Forest, IL 60045
Phone: 847-535-7647    Fax: 847-535-7151
Jennifer M Nguyen, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1000 N Westmoreland Rd, Lake Forest, IL 60045
Phone: 847-234-5600    
Andrew Min Jun Choi, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1000 N Westmoreland Rd, Lake Forest, IL 60045
Phone: 847-234-5600    
Sam F Hull, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 951 Country Pl, Lake Forest, IL 60045
Phone: 847-295-5729    Fax: 847-295-5700
Dr. Denise Verges, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 900 N Westmoreland Rd, Suite 222, Lake Forest, IL 60045
Phone: 847-234-6121    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.