MARY MANSOUR RIWES D.O.
NPI 1750548434
Internal Medicine - Medical Oncology in Ann Arbor, MI

Active since May 20, 2008PECOS EnrolledAccepts Medicare Assignment
1500 E MEDICAL CENTER DR, ANN ARBOR, MI 48109(734) 936-4000 Get Directions Write a Review

NPPES record last updated: December 2, 2020. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mary Mansour Riwes D.o. NPPES

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

MARY MANSOUR RIWES D.O. (NPI 1750548434) is an individual medical oncology provider in Ann Arbor, Michigan, licensed in Michigan (5101020742) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (2007).

NPPES Registry Identity

NPI1750548434
Entity TypeIndividualFemale
Primary Taxonomy207RX0202X
Provider Legal NameMARY MANSOUR RIWESCredential: D.O.
Location Address1500 E MEDICAL CENTER DRAnn Arbor, MI 48109-5000
Mailing Address3621 S State StAnn Arbor, MI 48108-1633 · (734) 647-5299
Sole ProprietorNo
Medical School CMSNew York College Of Osteo Medicine Of New York Institute Of TechnologyGraduated 2007
Enumeration DateMay 20, 2008
Last NPPES UpdateDecember 2, 2020
NPPES CertifiedDecember 2, 2020
NPI 1750548434 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License Licensed in MI · 5101020742
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109

Other Names 1

Former Name (1)Mary Mansour D.o.

Accepted Insurance

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

Mary Mansour Riwes D.o. 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 ID4587892609
PECOS Enrollment IDI20140118000154
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 2

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 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
62 services13 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
53 services15 patients

Hospital Affiliations CMS Care Compare

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

University Of Michigan Health System

Acute Care Hospitals · Ann Arbor, MI
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230046
Location1500 E Medical Center Drive, Spc 5474Ann Arbor, MI 48109 · Washtenaw County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48109 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
$177.36 typical visit price
range $58.04 – $177.36
Typical copayment $44.34 (range $14.51 – $44.34)
Most-billed visit code 99205
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
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.

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.

Pathology (Forensic Pathology)
1500 E MEDICAL CENTER DR, 2ND FLOOR UNIVERSITY HOSPITAL RECP PATHOLOGY
ANN ARBOR, MI 48109
Internal Medicine (Gastroenterology)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Pathology (Cytopathology)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Pediatrics
1500 E MEDICAL CENTER DR, 12TH FLOOR C.S. MOTT CHILDREN'S HOSPITAL ROOM 525
ANN ARBOR, MI 48109
Pediatrics (Pediatric Infectious Diseases)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Physician Assistant
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Nurse Anesthetist, Certified Registered
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109
Family Medicine (Hospice and Palliative Medicine)
1500 E MEDICAL CENTER DR
ANN ARBOR, MI 48109

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 Riwes's NPI number?

The NPI number for Mary Riwes is 1750548434. It was assigned to this individual provider in the NPPES registry on May 20, 2008. The provider is also known as Mary Mansour D.O..

Where is Mary Riwes located?

Mary Riwes practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.

What is Mary Riwes's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Mary Riwes enrolled in Medicare?

Yes. Mary Riwes 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.

What insurance does Mary Riwes accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Mary Riwes as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mary Riwes affiliated with any hospitals?

According to CMS data, Mary Riwes is affiliated with University Of Michigan Health System.

When was this NPI record last updated?

The NPPES record for Mary Riwes was last updated on December 2, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.