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CECILIA ONG MD
NPI 1013336734
Surgery in Chicago, IL

Active since April 09, 2014PECOS EnrolledAccepts Medicare Assignment
5841 S. MARYLAND AVE MC 1052, DEPT OF GME ROOM J-141, CHICAGO, IL 60637(773) 702-6760 Get Directions Write a Review

NPPES record last updated: July 30, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Cecilia Ong Md NPPES

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

CECILIA ONG MD (NPI 1013336734) is an individual surgery provider in Chicago, Illinois, licensed in Illinois (036.156949) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with Adventist La Grange Memorial Hospital, and maintains a secondary practice location in Durham.

NPPES Registry Identity

NPI1013336734
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameCECILIA ONGCredential: MD
Location Address5841 S. MARYLAND AVE MC 1052, DEPT OF GME ROOM J-141Chicago, IL 60637-1470
Mailing Address5841 S. Maryland Ave Mc 1052, Dept Of Gme Room J-141Chicago, IL 60637-1470
Phone(773) 702-6760
Sole ProprietorNo
Medical School CMSDuke University School Of MedicineGraduated 2014
Enumeration DateApril 9, 2014
Last NPPES UpdateJuly 30, 2021
NPPES CertifiedJune 5, 2021
✔ NPI 1013336734 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in IL · 036.156949
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
5841 S. MARYLAND AVE MC 1052, Chicago, IL 60637
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Secondary Practice Location 1

Location 12301 Erwin RdDurham, NC 27705-4699 · Phone (919) 684-8111

Accepted Insurance

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

Cecilia Ong 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 ID8628427234
PECOS Enrollment IDI20231207003380
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

4

Medicare enrollment records show Cecilia Ong reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The University Of Chicago Medical Center
Same address
General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,905 clinicians in this Medicare group
NPI 1033218128 (773) 702-1530
University Of Chicago
Same address
Multi-Specialty
5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 2,237 clinicians in this Medicare group
NPI 1821048786 (773) 702-9200
Adventist Health Partners, Inc
8.9 mi
Family Medicine
6283 S ARCHER AVE
Chicago, IL 60638
  • Reassigned Medicare billing, Illinois enrollment
  • 381 clinicians in this Medicare group
NPI 1346592664 (773) 585-3131
Ahp Specialty Care Nfp
16 mi
Specialist
1 SALT CREEK LN
Hinsdale, IL 60521
  • Reassigned Medicare billing, Illinois enrollment
  • 44 clinicians in this Medicare group
NPI 1619334406 (630) 286-5500

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.

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.
15 services15 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
15 services11 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.
14 services14 patients

Hospital Affiliations CMS Care Compare 4

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

Adventist La Grange Memorial Hospital

Acute Care Hospitals · La Grange, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140065
Location5101 S Willow Springs RdLa Grange, IL 60525 · Cook County
Emergency services

The University Of Chicago Medical Center

Acute Care Hospitals · Chicago, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140088
Location5841 South MarylandChicago, IL 60637 · Cook County
Emergency services Birthing friendly

Adventist Hinsdale Hospital

Acute Care Hospitals · Hinsdale, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140122
Location120 North Oak StHinsdale, IL 60521 · Du Page County
Emergency services Birthing friendly

Ingalls Memorial Hospital

Acute Care Hospitals · Harvey, IL
2/5 CMS rating
OwnershipPhysician
CMS Certification Number140191
Location1 Ingalls DriveHarvey, IL 60426 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60637 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
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Cecilia Ong's NPI number?

The NPI number for Cecilia Ong is 1013336734. It was assigned to this individual provider in the NPPES registry on April 9, 2014.

Where is Cecilia Ong located?

Cecilia Ong practices at 5841 S. Maryland Ave Mc 1052 Dept Of Gme Room J-141, Chicago, IL 60637. The listed phone number is (773) 702-6760.

What is Cecilia Ong's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Cecilia Ong enrolled in Medicare?

Yes. Cecilia Ong 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 Cecilia Ong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cecilia Ong reassigns Medicare benefits to 4 organizations: The University Of Chicago Medical Center (Chicago, IL), University Of Chicago (Chicago, IL), Adventist Health Partners, Inc (Chicago, IL) and Ahp Specialty Care Nfp (Hinsdale, 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 Cecilia Ong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Cecilia Ong accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Cecilia Ong 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 Cecilia Ong affiliated with any hospitals?

According to CMS data, Cecilia Ong is affiliated with Adventist La Grange Memorial Hospital, The University Of Chicago Medical Center, Adventist Hinsdale Hospital and Ingalls Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Cecilia Ong was last updated on July 30, 2021. 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.