Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

CHI Young Ok, MD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1437315892

CHI Young Ok, MD practises Pathology in Worcester, Massachusetts. Qualified in 2004, 22 years ago. Practices with Physicians Referral Service, a 2,727-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
22
Licensed in
MA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

281 Lincoln St Med Staff Svcs
Worcester, MA 01605-2138 Not confirmed with CMS for 18 years — call before visiting
Phone: (508) 334-8015
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence 237148 (MA)

Record details

NPI number1437315892
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 5, 2008
Last updated in NPPESAugust 5, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Also practisesHEMATOLOGY
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Physicians Referral Service — 2727 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients740
Services billed 1,616 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at Physicians Referral Service

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2727 clinicians in the practice; 12 are shown here.

Other providers in Worcester