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ARCHIE LIM ONG M.D.
NPI 1093979486
Psychiatry & Neurology - Vascular Neurology in Lake Forest, IL

Active since July 15, 2008PECOS EnrolledAccepts Medicare Assignment
94.1/100
CMS Quality Rating
1000 N WESTMORELAND RD, LAKE FOREST, IL 60045(847) 535-8500(847) 535-8499 Get Directions Write a Review

NPPES record last updated: November 22, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 22, 2023, Feb 16, 2021, Dec 11, 2020 and 1 more (4 updates tracked since 2019).

About Archie Lim Ong M.d. NPPES

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

ARCHIE LIM ONG M.D. (NPI 1093979486) is an individual vascular neurology provider in Lake Forest, Illinois, licensed in Illinois (036130377) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1093979486
Entity TypeIndividualMale
Primary Taxonomy2084V0102X
Provider Legal NameARCHIE LIM ONGCredential: M.D.
Location Address1000 N WESTMORELAND RDLake Forest, IL 60045-1658
Mailing Address2650 Ridge Ave Ste 1223Evanston, IL 60201-1700 · (847) 570-2040
Phone(847) 535-8500
Fax(847) 535-8499
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateJuly 15, 2008
Last NPPES UpdateNovember 22, 20234 updates tracked since enumeration
NPPES CertifiedNovember 22, 2023
✔ NPI 1093979486 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Vascular NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084V0102X
License✔ Licensed in IL · 036130377
Definition
Vascular Neurology is a subspecialty in the evaluation, prevention, treatment and recovery from vascular diseases of the nervous system. This subspecialty includes the diagnosis and treatment of vascular events of arterial or venous origin from a large number of causes that affect the brain or spinal cord such as ischemic stroke, intracranial hemorrhage, spinal cord ischemia and spinal cord hemorrhage.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License 036130337 (IL)
1000 N WESTMORELAND RD, Lake Forest, IL 60045
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1880 W Central Rd Ste 4100Arlington Heights, IL 60005-2383 · Phone (847) 618-4400 · Fax (847) 618-4409
Location 29700 Kenton Ave, Suite 404Skokie, IL 60076-1259 · Phone (847) 933-3910

Other Identifiers 1

Other036130377IL · State License

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

Archie Lim Ong M.d. 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 ID547401010
PECOS Enrollment IDI20130725000361
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

3

Medicare enrollment records show Archie Ong reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Northwest Community Health Services Inc
14 mi
Internal Medicine
3040 W SALT CREEK LN
Arlington Heights, IL 60005
  • Reassigned Medicare billing, Illinois enrollment
  • 346 clinicians in this Medicare group
NPI 1134433154 (847) 618-3481
Endeavor Health Medical Group
16 mi
Anesthesiology
2650 RIDGE AVE, ANESTHESIOLOGY ROOM 3905
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1265695944 (847) 570-2760
Northwestern Medical Faculty Foundation
25 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

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 9

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.

Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg J1569
The Gammagard Liquid injection is a type of immune globulin therapy. It's used to boost your body's immune system, helping it fight off infections. The therapy involves injecting a liquid form of proteins, collected from healthy donors, into your body. This is a 500mg dose.
3,460 services12 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.
175 services110 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
166 services154 patients
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365
This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.
127 services35 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
97 services97 patients
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.
81 services67 patients

Hospital Affiliations CMS Care Compare 3

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

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140010
Location2650 Ridge AveEvanston, IL 60201 · Cook County
Emergency services Birthing friendly

Northwestern Lake Forest Hospital

Acute Care Hospitals · Lake Forest, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140130
Location1000 N Westmoreland RoadLake Forest, IL 60045 · Lake County
Emergency services Birthing friendly

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 60045 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
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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
Quality82.59
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.

CONSOLIDATED PATHOLOGY CONSULTANTS SC
Pathology (Anatomic Pathology & Clinical Pathology)
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 996-1030
JENNIFER M NGUYEN MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
CAROLINE LANG OVERMAN PT, DPT
Physical Therapist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-6430
CASEY DUGAN PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 582-2134
MRS. TAYLOR MORGAN SARES PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-8500
DR. POOJA NAYAK MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
ANDREW MIN JUN CHOI MD
Hospitalist
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 234-5600
IRENE ZHU PA-C
Physician Assistant
1000 N WESTMORELAND RD
LAKE FOREST, IL 60045
Lake County (847) 535-7058

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 Archie Ong's NPI number?

The NPI number for Archie Ong is 1093979486. It was assigned to this individual provider in the NPPES registry on July 15, 2008.

Where is Archie Ong located?

Archie Ong practices at 1000 N Westmoreland Rd, Lake Forest, IL 60045. The listed phone number is (847) 535-8500.

What is Archie Ong's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Vascular Neurology, with taxonomy code 2084V0102X.

Is Archie Ong enrolled in Medicare?

Yes. Archie 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 Archie Ong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Archie Ong reassigns Medicare benefits to 3 organizations: Northwest Community Health Services Inc (Arlington Heights, IL), Endeavor Health Medical Group (Evanston, IL) and Northwestern Medical Faculty Foundation (Carol Stream, 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 Archie Ong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Archie Ong affiliated with any hospitals?

According to CMS data, Archie Ong is affiliated with Northshore University Healthsystem - Evanston Hospital, Northwestern Lake Forest Hospital and Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Archie Ong was last updated on November 22, 2023. 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.