Mrs Mary Colleen Welles, APN - Medicare Certified Clinical Nurse Specialist (cns) in Chicago, IL

Mrs Mary Colleen Welles, APN is a medicare enrolled "Clinical Nurse Specialist - Oncology" in Chicago, Illinois. She went to Rush Medical College Of Rush University and graduated in 1994 and has 30 years of diverse experience with area of expertise as Certified Clinical Nurse Specialist (cns). She is a member of the group practice Northwestern Medical Faculty Foundation and her current practice location is 676 N Saint Clair St, Suite 2125, Chicago, Illinois. You can reach out to her office (for appointments etc.) via phone at (312) 926-5400.

Mrs Mary Colleen Welles is licensed to practice in Illinois (license number 209.002324) 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 1366768764.

Contact Information

Mrs Mary Colleen Welles, APN
676 N Saint Clair St, Suite 2125,
Chicago, IL 60611-2927
(312) 926-5400
(312) 926-8885

Map and Direction




Provider's Profile

Full NameMrs Mary Colleen Welles
GenderFemale
SpecialityCertified Clinical Nurse Specialist (cns)
Experience30 Years
Location676 N Saint Clair St, Chicago, 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:
  • Mrs Mary Colleen Welles attended and graduated from Rush Medical College Of Rush University in 1994
  NPI Data:
  • NPI Number: 1366768764
  • Provider Enumeration Date: 04/12/2010
  • Last Update Date: 04/12/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 7113253022
  • Enrollment ID: I20190731000701

Medical Identifiers

Medical identifiers for Mrs Mary Colleen Welles such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366768764NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
364SX0200XClinical Nurse Specialist - Oncology 209.002324 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northwestern Memorial HospitalChicago, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Northwestern Medical Faculty Foundation45875768143352

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. Mrs Mary Colleen Welles allows following entities to bill medicare on her behalf.
Entity NameNorthwestern Medical Faculty Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1346235314
PECOS PAC ID: 4587576814
Enrollment ID: O20031105000541

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. Mrs Mary Colleen Welles 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
Mrs Mary Colleen Welles, APN
676 N Saint Clair St, Suite 2125,
Chicago, IL 60611-2927

Ph: (312) 926-5400
Mrs Mary Colleen Welles, APN
676 N Saint Clair St, Suite 2125,
Chicago, IL 60611-2927

Ph: (312) 926-5400

Reviews and Comments


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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.

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