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CHI YOUNG OK M.D.
NPI 1437315892
Pathology - Anatomic Pathology & Clinical Pathology in Worcester, MA

Active since August 05, 2008PECOS EnrolledAccepts Medicare Assignment
81.38/100
CMS Quality Rating
281 LINCOLN ST, MED STAFF SVCS, WORCESTER, MA 01605(508) 334-8015 Get Directions Write a Review

NPPES record last updated: August 5, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Chi Young Ok M.d. NPPES

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

CHI YOUNG OK M.D. (NPI 1437315892) is an individual anatomic pathology & clinical pathology provider in Worcester, Massachusetts, licensed in Massachusetts (237148) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1437315892
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameCHI YOUNG OKCredential: M.D.
Location Address281 LINCOLN ST, MED STAFF SVCSWorcester, MA 01605-2138
Mailing Address281 Lincoln St, Med Staff SvcsWorcester, MA 01605-2138 · (508) 334-8015
Phone(508) 334-8015
Sole ProprietorNo
Medical School CMSOtherGraduated 2004
Enumeration DateAugust 5, 2008
✔ NPI 1437315892 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in MA · 237148
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.
281 LINCOLN ST, Worcester, MA 01605
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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

Chi Young Ok 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 ID345558946
PECOS Enrollment IDI20151001000446
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 Reassignment

Medicare enrollment records show Chi Ok reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Physicians Referral Service
1,573 mi
Multi-Specialty
1515 HOLCOMBE BLVD
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 2,675 clinicians in this Medicare group
NPI 1073574810 (713) 792-6161

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 12

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.

Molecular pathology procedure; physician interpretation and report G0452
A molecular pathology procedure involves analyzing your body's cells at a molecular level to identify any abnormalities. This can help detect diseases early. A physician will interpret the results and provide a detailed report, explaining the findings clearly.
518 services438 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.
310 services55 patients
Flow cytometry technique for dna or cell analysis, 16 or more markers 88189
Flow cytometry is a method used to measure and analyze cells. It uses a beam of light to detect up to 16 or more markers on cells, helping to identify their type, function, or abnormalities. This technique aids in diagnosing various health conditions.
176 services164 patients
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.
128 services71 patients
Flow cytometry technique for dna or cell analysis, 9 to 15 markers 88188
Flow cytometry is a technique used to measure physical and chemical characteristics of cells or particles. It can analyze multiple markers (9 to 15) on a cell, helping to identify its type and function. This process can also examine DNA within cells for any abnormalities.
84 services83 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.
80 services67 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01605 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
$134.47 typical visit price
range $58.86 – $177.36
Typical copayment $33.61 (range $14.71 – $44.34)
Most-billed visit code 99204
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

81.38/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality81.25
Promoting Interoperability100
Improvement Activities40
Cost49.97

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.

STACY AILEEN MEULENAERE OTR/L
Occupational Therapist
281 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 334-1000
RACHEL NOONE PA-C
Physician Assistant
281 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 334-6158
DR. THOMAS EVANS M.D.
Emergency Medicine
281 LINCOLN ST, MED STAFF SVCS
WORCESTER, MA 01605
Worcester County (508) 334-8015
RAJIV BALASURIYA M.D.
Family Medicine
281 LINCOLN ST, MEDICAL STAFF SVCS
WORCESTER, MA 01605
Worcester County (508) 334-8015
DR. DANIEL LEE M.D., PHD
Internal Medicine (Medical Oncology)
281 LINCOLN ST, MEDICAL STAFF SVCS
WORCESTER, MA 01605
Worcester County (508) 334-1131
MEGAN ELIZABETH KLEIN MS, CCC-SLP
Speech-Language Pathologist
281 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 334-1000
ANKUR SHAH NARAIN MD
Orthopaedic Surgery
281 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 334-1955
THOMAS MICHAEL CERVANTES
Plastic Surgery (Surgery of the Hand)
281 LINCOLN ST
WORCESTER, MA 01605
Worcester County (508) 334-1000

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 Chi Ok's NPI number?

The NPI number for Chi Ok is 1437315892. It was assigned to this individual provider in the NPPES registry on August 5, 2008.

Where is Chi Ok located?

Chi Ok practices at 281 Lincoln St Med Staff Svcs, Worcester, MA 01605. The listed phone number is (508) 334-8015.

What is Chi Ok's specialty?

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

Is Chi Ok enrolled in Medicare?

Yes. Chi Ok 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 organization bills Medicare for Chi Ok's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chi Ok reassigns Medicare benefits to Physicians Referral Service (Houston, TX). The 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 Chi Ok's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Chi Ok was last updated on August 5, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.