MRS. MARY COLLEEN WELLES APN
NPI 1366768764
Clinical Nurse Specialist - Oncology in Chicago, IL

Q: What is Mary Welles's NPI number?

The NPI number for Mary Welles is 1366768764. It was assigned to this individual provider in the NPPES registry on April 12, 2010.

Q: What is Mary Welles's specialty?

The primary specialty registered for this NPI is Clinical Nurse Specialist, specializing in Oncology, with taxonomy code 364SX0200X.

Q: When was this NPI record last updated?

The NPPES record for Mary Welles was last updated on April 12, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 12, 2010PECOS EnrolledAccepts Medicare Assignment

94.1/100

CMS Quality Rating

676 N SAINT CLAIR ST, SUITE 2125, CHICAGO, IL 60611(312) 926-5400(312) 926-8885 Get Directions Write a Review

NPPES record last updated: April 12, 2010. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Mrs. Mary Colleen Welles Apn NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. MARY COLLEEN WELLES APN (NPI 1366768764) is an individual oncology provider in Chicago, Illinois, licensed in Illinois (209.002324) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and is a graduate of Rush Medical College Of Rush University (1994).

NPPES Registry Identity

NPI1366768764

Entity TypeIndividualFemale

Primary Taxonomy364SX0200X

Provider Legal NameMRS. MARY COLLEEN WELLESCredential: APN

Location Address676 N SAINT CLAIR ST, SUITE 2125Chicago, IL 60611-2927

Mailing Address676 N Saint Clair St, Suite 2125Chicago, IL 60611-2927 · (312) 926-5400 · Fax (312) 926-8885

Phone(312) 926-5400

Fax(312) 926-8885

Sole ProprietorNo

Medical School CMSRush Medical College Of Rush UniversityGraduated 1994

Enumeration DateApril 12, 2010

✔ NPI 1366768764 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Nurse Specialist · OncologyPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code364SX0200X

License✔ Licensed in IL · 209.002324

676 N SAINT CLAIR ST, Chicago, IL 60611

Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mrs. Mary Colleen Welles Apn is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113253022

PECOS Enrollment IDI20190731000701

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

36 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northwestern Memorial Hospital

Acute Care Hospitals · Chicago, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140281

Location251 E Huron StChicago, IL 60611 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

94.1/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

82.59

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. LISA RAUBOLT

Social Worker (Clinical)

676 N SAINT CLAIR ST
CHICAGO, IL 60611

Cook County (312) 926-4512

JULIANNA L ROTH MD

Internal Medicine

676 N SAINT CLAIR ST, SUITE 2300
CHICAGO, IL 60611

Cook County (312) 926-6000

ANKIT BHARAT MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

676 N SAINT CLAIR ST, SUITE 650
CHICAGO, IL 60611

Cook County (312) 926-7628

JOAQUIN CARLOS BRIEVA MD

Dermatology

676 N SAINT CLAIR ST, SUITE 1600
CHICAGO, IL 60611

Cook County (312) 695-8106

JOHN M SHAW MD

Internal Medicine (Medical Oncology)

676 N SAINT CLAIR ST, STE 2140
CHICAGO, IL 60611

Cook County (312) 664-5400

MELVIN J GOLDSTEIN, M.D.,S.C.

Internal Medicine (Gastroenterology)

676 N SAINT CLAIR ST, SUITE 1525
CHICAGO, IL 60611

Cook County (312) 337-1556

DR. HOWARD M. AROF M.D.

Obstetrics & Gynecology

676 N SAINT CLAIR ST, #1880
CHICAGO, IL 60611

Cook County (312) 642-9844

DR. MARIA MATSANGOU M.D.

Internal Medicine (Hematology & Oncology)

676 N SAINT CLAIR ST, SUITE 850
CHICAGO, IL 60611

Cook County (312) 695-6182

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Welles's NPI number?

The NPI number for Mary Welles is 1366768764. It was assigned to this individual provider in the NPPES registry on April 12, 2010.

Where is Mary Welles located?

Mary Welles practices at 676 N Saint Clair St Suite 2125, Chicago, IL 60611. The listed phone number is (312) 926-5400.

What is Mary Welles's specialty?

The primary specialty registered for this NPI is Clinical Nurse Specialist, specializing in Oncology, with taxonomy code 364SX0200X.

Is Mary Welles enrolled in Medicare?

Yes. Mary Welles is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Mary Welles affiliated with any hospitals?

According to CMS data, Mary Welles is affiliated with Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Mary Welles was last updated on April 12, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.