Mary Colleen Welles, APN
Oncology Clinical Nurse Specialist · Chicago, IL
Mary Colleen Welles, APN is an oncology clinical nurse specialist with a practice address in Chicago, Illinois, and NPI 1366768764, issued on Apr 12, 2010. Check the license (Illinois 209.002324, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Colleen Welles
- Credential
- APN
- Primary taxonomy
- Oncology Clinical Nurse Specialist 364SX0200X
- License number
- 209.002324 IL
Self-reported in NPPES; status is on the state search - Practice location
- 676 N Saint Clair St, Chicago, IL 60611
- Phone
- (312) 926-5400
- Enumerated
- Apr 12, 2010
- Record last updated
- Apr 12, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (312) 926-8885
- Medicare enrollment
- Enrolled (PECOS I20190731000701); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 1994
- Entity
- Type 1 · individual
8 nearest oncology clinical nurse specialist records → All 27 in Illinois → Look up another NPI →
Also registered at 676 N Saint Clair St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sharon Adam, M.D.Diagnostic Radiology Physician1619361763
- Jessica Altman, MDHematology & Oncology Physician1831391200
- Rama AlzeinStudent in an Organized Health Care Education/Training Program1528904133
- Sarah Anderson, NPNurse Practitioner1043243355
- Michael Angarone, D.O.Infectious Disease Physician1194806190
- Cara Angelotta, MDPsychiatry Physician1194017525
Verify Mary Colleen Welles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.002324Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Colleen Welles among 27 oncology clinical nurse specialist records in Illinois
Mary Colleen Welles, APN is one of 27 oncology clinical nurse specialist records with a practice address in Illinois. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 52% of them.
- NPI issued2010 · 52% of these records are older, 41% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileYes · 22% of these records are
- Record last updated2010 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 364SX0200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Oncology Clinical Nurse Specialist providers in Illinois
There are 27 oncology clinical nurse specialist records in Illinois.
All 27 in Illinois → Every provider in Chicago → Oncology Clinical Nurse Specialist nationwide →
The 8 oncology clinical nurse specialist records with the nearest ZIP codes
- Maryanne Fishman, R.N., M.S., A.O.C.N.Chicago, IL 606111184839656
- Kimberly Valachovic, APNChicago, IL 606111902166754
- Melissa Arangoa, MS,APN,ACNS-BC,AOCNSChicago, IL 606371194235283
- Barbara Gordon, MSNChicago, IL 606371972746238
- Linda JanischChicago, IL 606371851518070
- Carol White, RN, APNChicago, IL 606371114140498
- Trudi Sabaj, APN-CNSNaperville, IL 605631952525305
- Joann Petty, APN CNSWarrenville, IL 605551780889626
Common questions
What is Mary Colleen Welles, APN's NPI number?
Mary Colleen Welles, APN's National Provider Identifier (NPI) is 1366768764, issued on Apr 12, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary Colleen Welles, APN located?
The NPPES record lists a practice address at 676 N Saint Clair St, Chicago, IL, 60611. Phone: (312) 926-5400. Providers update this record themselves, so call before visiting.
How can I verify Mary Colleen Welles, APN's license?
NPPES lists Illinois license number 209.002324, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
What is Mary Colleen Welles, APN's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.