MR. KIMIYOSHI JAMES KOBAYASHI M.D.
NPI 1477793487
Internal Medicine in Worcester, MA
About Mr. Kimiyoshi James Kobayashi M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. KIMIYOSHI JAMES KOBAYASHI M.D. (NPI 1477793487) is an individual internal medicine provider in Worcester, Massachusetts, licensed in Massachusetts (253076) and active in the NPI registry since March 2009. He is enrolled in Medicare PECOS, is affiliated with Umass Memorial Medical Center/university Campus, and maintains a secondary practice location in Baltimore.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
Accepted 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
Mr. Kimiyoshi James Kobayashi 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.
Medicare Billing Reassignment
Medicare enrollment records show Kimiyoshi Kobayashi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Worcester, MA 01655
- Reassigned Medicare billing, Massachusetts enrollment
- 2,902 clinicians in this Medicare group
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
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.
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, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01655 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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.
WORCESTER, MA 01655
WORCESTER, MA 01655
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 Kimiyoshi Kobayashi's NPI number?
The NPI number for Kimiyoshi Kobayashi is 1477793487. It was assigned to this individual provider in the NPPES registry on March 3, 2009.
Where is Kimiyoshi Kobayashi located?
Kimiyoshi Kobayashi practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (508) 334-8515.
What is Kimiyoshi Kobayashi's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Kimiyoshi Kobayashi enrolled in Medicare?
Yes. Kimiyoshi Kobayashi 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 Kimiyoshi Kobayashi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kimiyoshi Kobayashi 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 Kimiyoshi Kobayashi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kimiyoshi Kobayashi accept?
Health plans from Taro Health list Kimiyoshi Kobayashi 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 Kimiyoshi Kobayashi affiliated with any hospitals?
According to CMS data, Kimiyoshi Kobayashi is affiliated with Umass Memorial Medical Center/University Campus.
When was this NPI record last updated?
The NPPES record for Kimiyoshi Kobayashi was last updated on November 4, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Mr. Kimiyoshi James Kobayashi, M.D. · NPI 1477793487
Internal Medicine physician in Worcester, Massachusetts. Individual provider, active in the CMS NPPES registry since March 3, 2009.
## Identity
- **NPI:** 1477793487 (Entity type: Individual)
- **Enumerated:** March 3, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 253076 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 LAKE AVE N, Worcester, MA 01655-0002
- **Phone:** (508) 334-8515 · **Fax:** (508) 334-6490
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Umass Memorial Medical Group Inc (NPI 1760445373, Worcester, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Johns Hopkins University School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** November 4, 2020
- **Other identifiers:** Medicaid 1202154 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1477793487) · Data from the CMS NPPES public registry.