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JASON D YANG
NPI 1003445164
Internal Medicine - Rheumatology in Worcester, MA

Active since April 02, 2020PECOS EnrolledAccepts Medicare Assignment
119 BELMONT ST, WORCESTER, MA 01605(508) 334-5224(508) 334-1053 Get Directions Write a Review

NPPES record last updated: March 12, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Mar 12, 2026, Apr 23, 2020, Apr 2, 2020 (3 updates tracked since 2020).

About Jason D Yang NPPES

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

JASON D YANG (NPI 1003445164) is an individual rheumatology provider in Worcester, Massachusetts, licensed in Massachusetts (1015462) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Medical Center/university Campus, and maintains a secondary practice location in Worcester.

NPPES Registry Identity

NPI1003445164
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameJASON D YANG
Location Address119 BELMONT STWorcester, MA 01605-2903
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977
Phone(508) 334-5224
Fax(508) 334-1053
Sole ProprietorNo
Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 2020
Enumeration DateApril 2, 2020
Last NPPES UpdateMarch 12, 20263 updates tracked since enumeration
NPPES CertifiedMarch 12, 2026
✔ NPI 1003445164 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in MA · 1015462
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
119 BELMONT ST, Worcester, MA 01605
Open in Google Maps ↗

Secondary Practice Location 1

Location 155 Lake Ave NWorcester, MA 01655-0002 · Phone (508) 334-5224 · Fax (508) 334-1053

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.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

Jason D Yang 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 ID547680928
PECOS Enrollment IDI20260422000261
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 Jason Yang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Umass Memorial Medical Group Inc
1.7 mi
Internal Medicine
55 LAKE AVE N
Worcester, MA 01655
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2,902 clinicians in this Medicare group
NPI 1760445373 (508) 334-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

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

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220163
Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County
Emergency services Birthing friendly

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.

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.

DR. PANKAJ ANIL KSHEERSAGAR M.B.B.S.,M.D
Family Medicine
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-5571
SANDRA BELLINI N.P.
Nurse Practitioner (Neonatal, Critical Care)
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-6470
BENJAMIN D. HAMAR MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-0550
WALTER J ZAWACKI NP
Nurse Practitioner
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-8934
CARYN SULLIVAN LCSW
Social Worker
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-1000
WAYNE WAYFU CHAN M.D.
Orthopaedic Surgery
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-9750
NICHOLAS PAICOS PA STUDENT
Physician Assistant
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (508) 334-8515
HERE WE GROW BABY LLC
Clinic/Center (Birthing)
119 BELMONT ST
WORCESTER, MA 01605
Worcester County (774) 420-5202

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 Jason Yang's NPI number?

The NPI number for Jason Yang is 1003445164. It was assigned to this individual provider in the NPPES registry on April 2, 2020.

Where is Jason Yang located?

Jason Yang practices at 119 Belmont St, Worcester, MA 01605. The listed phone number is (508) 334-5224.

What is Jason Yang's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Jason Yang enrolled in Medicare?

Yes. Jason Yang 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 Jason Yang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jason Yang reassigns Medicare benefits to Umass Memorial Medical Group Inc (Worcester, MA). 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 Jason Yang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jason Yang accept?

Health plans from Anthem Blue Cross and Blue Shield list Jason Yang 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 Jason Yang affiliated with any hospitals?

According to CMS data, Jason Yang is affiliated with Umass Memorial Medical Center/University Campus.

When was this NPI record last updated?

The NPPES record for Jason Yang was last updated on March 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.