Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JI-WEON PARK MD
NPI 1952573511
Pathology - Anatomic Pathology & Clinical Pathology in Lake Forest, IL

Q: What is Ji-weon Park's NPI number?

The NPI number for Ji-weon Park is 1952573511. It was assigned to this individual provider in the NPPES registry on March 24, 2008.

Q: What is Ji-weon Park's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for Ji-weon Park was last updated on October 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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 March 24, 2008PECOS EnrolledAccepts Medicare Assignment

1000 N WESTMORELAND RD # LL0519, LAKE FOREST, IL 60045(847) 535-6218(847) 535-6237 Get Directions Write a Review

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

Record update history: Oct 18, 2026, Mar 24, 2023 (2 updates tracked since 2023).

On this page

About Dr. Ji-weon Park Md NPPES

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

DR. JI-WEON PARK MD (NPI 1952573511) is an individual anatomic pathology & clinical pathology provider in Lake Forest, Illinois, licensed in Illinois (036137671) and active in the NPI registry since March 2008. She is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and maintains a secondary practice location in Saint Louis.

NPPES Registry Identity

NPI1952573511

Entity TypeIndividualFemale

Primary Taxonomy207ZP0102X

Provider Legal NameDR. JI-WEON PARKCredential: MD

Location Address1000 N WESTMORELAND RD # LL0519Lake Forest, IL 60045-1658

Mailing Address1000 N Westmoreland Rd # Ll0519Lake Forest, IL 60045-1658 · (847) 535-6218 · Fax (847) 535-6237

Phone(847) 535-6218

Fax(847) 535-6237

Sole ProprietorNo

Medical School CMSOtherGraduated 2005

Enumeration DateMarch 24, 2008

Last NPPES UpdateOctober 18, 20262 updates tracked since enumeration

NPPES CertifiedMarch 24, 2023

✔ NPI 1952573511 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

Licenses✔ Licensed in IL · 036137671✔ Licensed in MO · 2010009848

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

1000 N WESTMORELAND RD # LL0519, Lake Forest, IL 60045

Open in Google Maps ↗

Secondary Practice Location 1

Location 1216 S Kingshighway BlvdSaint Louis, MO 63110-1026 · Phone (314) 362-5641 · Fax (314) 362-0369

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. Ji-weon Park 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 ID6204960867

PECOS Enrollment IDI20150824000203

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

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

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

University Pathology Diagnostics Sc

28 mi

Anatomic Pathology & Clinical Pathology

1653 W CONGRESS PKWY, 570 JELKE
Chicago, IL 60612

Reassigned Medicare billing, Illinois enrollment
25 clinicians in this Medicare group

NPI 1275088130 (312) 942-8850

University Pathologists P C

28 mi

Anatomic Pathology & Clinical Pathology

1653 W CONGRESS PKWY
Chicago, IL 60612

Reassigned Medicare billing, Illinois enrollment
21 clinicians in this Medicare group

NPI 1003890534 (312) 942-5700

Pathology Associates Of Aurora LLC

42 mi

Anatomic Pathology & Clinical Pathology

2000 OGDEN AVE
Aurora, IL 60504

Reassigned Medicare billing, Illinois enrollment
5 clinicians in this Medicare group

NPI 1427370956 (630) 978-6700

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 15

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

1,143 services571 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

571 services99 patients

Special stained specimen slides to examine tissue, initial procedure 88342

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

315 services242 patients

Microscopic genetic analysis of tumor, manual 88360

Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.

247 services63 patients

Pathology examination of tissue using a microscope, moderately high complexity 88307

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

208 services95 patients

Cell examination of specimen, concentration technique 88108

Cell examination of a specimen using a concentration technique is a lab process that enhances the detection of cells in a sample. This method helps to focus on key areas of the sample, making it easier to spot abnormalities or changes. It's a crucial part of diagnosing and monitoring certain health conditions.

164 services109 patients

Blood smear interpretation by physician with written report 85060

Blood smear interpretation is a lab test where your doctor examines a sample of your blood under a microscope. They look for abnormalities in your blood cells which can help diagnose various conditions. You'll receive a written report of the findings.

97 services80 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.

79 services24 patients

Evaluation of fine needle aspirate with interpretation and report 88173

This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.

71 services63 patients

Evaluation of fine needle aspirate 88172

Evaluation of fine needle aspirate is a diagnostic procedure where a thin needle is used to collect cells from a lump or mass. This sample is then examined under a microscope to determine the nature of the lump, whether it's benign (non-cancerous) or malignant (cancerous).

68 services60 patients

Preparation of tissue for examination by removing any calcium present 88311

This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.

50 services39 patients

Pathology examination of tissue using a microscope, moderately low complexity 88304

A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.

46 services38 patients

Pathology examination of specimen during surgery, first tissue block 88331

A pathology examination during surgery involves the immediate analysis of a removed tissue sample. This helps the surgeon make decisions during your operation. The "first tissue block" refers to the initial sample examined. It's a vital step to ensure your health.

18 services13 patients

Bone marrow, smear interpretation 85097

Bone marrow smear interpretation is a procedure where a small sample of your bone marrow is taken and examined under a microscope. This helps doctors identify any abnormal cells or signs of diseases such as anemia, leukemia, or infections. It's a crucial step in diagnosing various blood disorders.

17 services17 patients

Pathology examination of tissue using a microscope, high complexity 88309

A high complexity pathology examination involves studying body tissue under a microscope to identify any abnormalities. This intricate process helps in diagnosing various conditions and deciding on the best treatment plan.

14 services12 patients

Hospital Affiliations CMS Care Compare 5

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 Medicine Mchenry

Acute Care Hospitals · Mchenry, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140116

Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry 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

Advocate Condell Medical Center

Acute Care Hospitals · Libertyville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140202

Location801 S Milwaukee AveLibertyville, IL 60048 · 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.

Reported Quality Measures

Quantitative Immunohistochemical (IHC) Evaluation of Human Epidermal Growth Factor Receptor 2 Testing (HER2) for Breast Cancer Patients

This is a measure based on whether quantitative evaluation of Human Epidermal Growth Factor Receptor 2 Testing (HER2) by immunohistochemistry (IHC) uses the system recommended in the current ASCO/CAP Guidelines for Human Epidermal Growth Factor Receptor 2…

100%24 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 2

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

MUHAMMAD U AHMED MD

Pathology (Anatomic Pathology & Clinical Pathology)

1000 N WESTMORELAND RD # LL0519
LAKE FOREST, IL 60045

Lake County (847) 535-6218

CHERISE MEYERSON

Pathology (Anatomic Pathology & Clinical Pathology)

1000 N WESTMORELAND RD # LL0519
LAKE FOREST, IL 60045

Lake County (847) 535-6218

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 Ji-weon Park's NPI number?

The NPI number for Ji-weon Park is 1952573511. It was assigned to this individual provider in the NPPES registry on March 24, 2008.

Where is Ji-weon Park located?

Ji-weon Park practices at 1000 N Westmoreland Rd # Ll0519, Lake Forest, IL 60045. The listed phone number is (847) 535-6218.

What is Ji-weon Park's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Ji-weon Park enrolled in Medicare?

Yes. Ji-weon Park 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 Ji-weon Park's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ji-weon Park reassigns Medicare benefits to 4 organizations: Northwestern Medical Faculty Foundation (Carol Stream, IL), University Pathology Diagnostics Sc (Chicago, IL), University Pathologists P C (Chicago, IL) and Pathology Associates Of Aurora LLC (Aurora, 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 Ji-weon Park's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ji-weon Park affiliated with any hospitals?

According to CMS data, Ji-weon Park is affiliated with Northshore University Healthsystem - Evanston Hospital, Northwestern Medicine Mchenry, Northwestern Lake Forest Hospital, Advocate Condell Medical Center and Northwestern Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Ji-weon Park was last updated on October 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.