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DR. OMAR SHAMSI MD
NPI 1053599233
Internal Medicine - Obesity Medicine in Elmhurst, IL

Active since February 09, 2008PECOS EnrolledAccepts Medicare Assignment
91.35/100
CMS Quality Rating
1200 S YORK ST, SUITE 1240, ELMHURST, IL 60126(331) 221-6140(331) 221-3838 Get Directions Write a Review

NPPES record last updated: July 15, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 15, 2024, Jan 21, 2016 (2 updates tracked since 2016).

About Dr. Omar Shamsi Md NPPES

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

DR. OMAR SHAMSI MD (NPI 1053599233) is an individual obesity medicine provider in Elmhurst, Illinois, licensed in Illinois (036125176) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS, is affiliated with Elmhurst Memorial Hospital, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1053599233
Entity TypeIndividualMale
Primary Taxonomy207RB0002X
Provider Legal NameDR. OMAR SHAMSICredential: MD
Location Address1200 S YORK ST, SUITE 1240Elmhurst, IL 60126-5626
Mailing Address1200 S York St, Suite 1240Elmhurst, IL 60126-5626 · (331) 221-6140 · Fax (331) 221-3838
Phone(331) 221-6140
Fax(331) 221-3838
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateFebruary 9, 2008
Last NPPES UpdateJuly 15, 20242 updates tracked since enumeration
NPPES CertifiedOctober 24, 2023
✔ NPI 1053599233 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Obesity MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RB0002X
License✔ Licensed in IL · 036125176
Definition
An internal medicine physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity.
Also ListedInternal MedicineTaxonomy 207R00000X · License 036125176 (IL)
1200 S YORK ST, Elmhurst, IL 60126
Open in Google Maps ↗

Other Identifiers 2

Other01066903AIN · Indiana Professional Licensing Agency Medical Licensing Board
Medicaid200967190AIN

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Omar Shamsi Md 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 ID7810055225
PECOS Enrollment IDI20150521001161
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Omar Shamsi reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Edward Health Ventures
Same address
Clinic/Center
1200 S YORK ST, STE 3160
Elmhurst, IL 60126
  • Reassigned Medicare billing, Illinois enrollment
  • 561 clinicians in this Medicare group
NPI 1275963027 (331) 221-9090
Endeavor Health Medical Group
19 mi
Allergy & Immunology
1000 CENTRAL ST
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1497701882 (847) 570-5235

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
274 services160 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.
39 services38 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
28 services28 patients

Hospital Affiliations CMS Care Compare

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

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL
4/5 CMS rating
OwnershipProprietary
CMS Certification Number140200
Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County
Emergency services Birthing friendly

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.

91.35/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality82.71
Promoting Interoperability100
Improvement Activities40

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.

KELLY ABATE MD LLC
Dermatology
1200 S YORK ST, SUITE 3240
ELMHURST, IL 60126
Dupage County (630) 758-8688
NICOLE J MORRISSEY DPT
Physical Therapist
1200 S YORK ST
ELMHURST, IL 60126
Dupage County (331) 221-6050
YOGEN YATIN PATEL
Physical Medicine & Rehabilitation (Sports Medicine)
1200 S YORK ST
ELMHURST, IL 60126
Dupage County (331) 221-9095
ROSALBA I RUBINO
Nurse Practitioner
1200 S YORK ST
ELMHURST, IL 60126
Dupage County (331) 221-1000
DR. ALEX BRYAN BEHAR M.D.
Physical Medicine & Rehabilitation
1200 S YORK ST
ELMHURST, IL 60126
Dupage County (331) 221-9095
DR. SARAH MARIA SARHADDI PSYD
Psychologist (Clinical)
1200 S YORK ST
ELMHURST, IL 60126
Dupage County (331) 221-6134
ASHLEY VERBUS
Nurse Practitioner
1200 S YORK ST
ELMHURST, IL 60126
Dupage County (630) 527-3200
DR. CHRISTINE MARIE GRESIK M.D.
Surgery
1200 S YORK ST, STE. 3280
ELMHURST, IL 60126
Dupage County (630) 758-8640

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 Omar Shamsi's NPI number?

The NPI number for Omar Shamsi is 1053599233. It was assigned to this individual provider in the NPPES registry on February 9, 2008.

Where is Omar Shamsi located?

Omar Shamsi practices at 1200 S York St Suite 1240, Elmhurst, IL 60126. The listed phone number is (331) 221-6140.

What is Omar Shamsi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Obesity Medicine, with taxonomy code 207RB0002X.

Is Omar Shamsi enrolled in Medicare?

Yes. Omar Shamsi 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.

Which organizations bill Medicare for Omar Shamsi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Omar Shamsi reassigns Medicare benefits to 2 organizations: Edward Health Ventures (Elmhurst, IL) and Endeavor Health Medical Group (Evanston, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Omar Shamsi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Omar Shamsi accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Omar Shamsi 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 Omar Shamsi affiliated with any hospitals?

According to CMS data, Omar Shamsi is affiliated with Elmhurst Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Omar Shamsi was last updated on July 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.