Dr Mary S Maish, MD - Medicare Thoracic Surgery in Lake Forest, IL

Dr Mary S Maish, MD is a medicare enrolled "Thoracic Surgery (cardiothoracic Vascular Surgery)" physician in Lake Forest, Illinois. She went to Rush Medical College Of Rush University and graduated in 1993 and has 31 years of diverse experience with area of expertise as Thoracic Surgery. She is a member of the group practice Waukegan Clinic Corp and her current practice location is 800 N Westmoreland Rd Ste 100, Lake Forest, Illinois. You can reach out to her office (for appointments etc.) via phone at (224) 271-4650.

Dr Mary S Maish is licensed to practice in Illinois (license number 036147674) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1750316774.

Contact Information

Dr Mary S Maish, MD
800 N Westmoreland Rd Ste 100,
Lake Forest, IL 60045-1671
(224) 271-4650
(224) 234-4336

Map and Direction




Physician's Profile

Full NameDr Mary S Maish
GenderFemale
SpecialityThoracic Surgery
Experience31 Years
Location800 N Westmoreland Rd Ste 100, Lake Forest, Illinois
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Mary S Maish attended and graduated from Rush Medical College Of Rush University in 1993
  NPI Data:
  • NPI Number: 1750316774
  • Provider Enumeration Date: 07/11/2006
  • Last Update Date: 12/05/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 0547226789
  • Enrollment ID: I20181129000993

Medical Identifiers

Medical identifiers for Dr Mary S Maish such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1750316774NPI-NPPES
00G868960MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208G00000XThoracic Surgery (cardiothoracic Vascular Surgery) 036147674 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northwestern Lake Forest HospitalLake forest, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Waukegan Clinic Corp428463108631

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. Dr Mary S Maish allows following entities to bill medicare on her behalf.
Entity NameWaukegan Clinic Corp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1306937289
PECOS PAC ID: 4284631086
Enrollment ID: O20061108000240

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. Dr Mary S Maish 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
Dr Mary S Maish, MD
800 N Westmoreland Rd Ste 100,
Lake Forest, IL 60045-1671

Ph: (224) 271-4650
Dr Mary S Maish, MD
800 N Westmoreland Rd Ste 100,
Lake Forest, IL 60045-1671

Ph: (224) 271-4650

Reviews and Comments


Thoracic Surgery (Cardiothoracic Vascular Surgery) Doctors in Lake Forest, IL

Dr. Milton Weinberg Jr., M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
Medicare: Not Enrolled in Medicare
Practice Location: 983 Kirkhill Ln, Lake Forest, IL 60045
Phone: 847-482-1773    Fax: 847-482-1774

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.