Mark E Mass, MD - Medicare Emergency Medicine in Lake Forest, IL

Mark E Mass, MD is a medicare enrolled "Clinic/center - Urgent Care" physician in Lake Forest, Illinois. He went to University Of Illinois College Of Med (chi/peor/rock/chm-urb) and graduated in 1988 and has 36 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Mass Medical Sc and his current practice location is 1025 W Everett Rd, Suite 101, Lake Forest, Illinois. You can reach out to his office (for appointments etc.) via phone at (847) 234-7950.

Mark E Mass is licensed to practice in Illinois (license number 036-093222) 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 1841276847.

Contact Information

Mark E Mass, MD
1025 W Everett Rd, Suite 101,
Lake Forest, IL 60045-2697
(847) 234-7950
(847) 234-7940

Map and Direction




Physician's Profile

Full NameMark E Mass
GenderMale
SpecialityEmergency Medicine
Experience36 Years
Location1025 W Everett Rd, 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:
  • Mark E Mass attended and graduated from University Of Illinois College Of Med (chi/peor/rock/chm-urb) in 1988
  NPI Data:
  • NPI Number: 1841276847
  • Provider Enumeration Date: 12/21/2005
  • Last Update Date: 04/23/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 1850580291
  • Enrollment ID: I20110114001063

Medical Identifiers

Medical identifiers for Mark E Mass such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1841276847NPI-NPPES
36093222MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207PE0004XEmergency Medicine - Emergency Medical Services 36093222 (Illinois)Secondary
261QU0200XClinic/center - Urgent Care 036-093222 (Illinois)Primary
2083X0100XPreventive Medicine - Occupational Medicine 036-093222 (Illinois)Secondary
207P00000XEmergency Medicine 036-093222 (Illinois)Secondary
261QX0100XClinic/center - Occupational Medicine 036-093222 (Illinois)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Central Dupage HospitalWinfield, ILHospital
Northwestern Lake Forest HospitalLake forest, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mass Medical Sc40828484602

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. Mark E Mass allows following entities to bill medicare on his behalf.
Entity NameMass Medical Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215379524
PECOS PAC ID: 4082848460
Enrollment ID: O20131018001021

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. Mark E Mass 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
Mark E Mass, MD
475 Mccormick Dr,
Lake Forest, IL 60045-3349

Ph: (847) 814-9376
Mark E Mass, MD
1025 W Everett Rd, Suite 101,
Lake Forest, IL 60045-2697

Ph: (847) 234-7950

Reviews and Comments



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.