DR. YUMI KOH DO, MPH
NPI 1245488642
Internal Medicine in Norwalk, CT
About Dr. Yumi Koh Do, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. YUMI KOH DO, MPH (NPI 1245488642) is an individual internal medicine provider in Norwalk, Connecticut, licensed in Connecticut (050890) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS, maintains a secondary practice location in Meriden, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (2008).
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
Dr. Yumi Koh Do, Mph 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 Yumi Koh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Danbury, CT 06810
- Reassigned Medicare billing, Connecticut enrollment
- 818 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06854 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Yumi Koh's NPI number?
The NPI number for Yumi Koh is 1245488642. It was assigned to this individual provider in the NPPES registry on August 28, 2008.
Where is Yumi Koh located?
Yumi Koh practices at 49 Day St, Norwalk, CT 06854. The listed phone number is (203) 854-9292.
What is Yumi Koh's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Yumi Koh enrolled in Medicare?
Yes. Yumi Koh 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 Yumi Koh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Yumi Koh reassigns Medicare benefits to Nuvance Health Medical Practice Ct, Inc. (Danbury, CT). 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 Yumi Koh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Yumi Koh accept?
Health plans from Anthem Blue Cross and Blue Shield list Yumi Koh 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.
When was this NPI record last updated?
The NPPES record for Yumi Koh was last updated on October 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Yumi Koh, DO, MPH · NPI 1245488642
Internal Medicine physician in Norwalk, Connecticut. Individual provider, active in the CMS NPPES registry since August 28, 2008.
## Identity
- **NPI:** 1245488642 (Entity type: Individual)
- **Enumerated:** August 28, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 050890 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 49 DAY ST, Norwalk, CT 06854-4901
- **Phone:** (203) 854-9292 · **Fax:** (203) 854-9437
## 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:** Nuvance Health Medical Practice Ct, Inc. (NPI 1407898117, Danbury, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York College Of Osteo Medicine Of New York Institute Of Technology, class of 2008
## Record status
- **NPPES last updated:** October 16, 2026
- **Other identifiers:** Medicaid 004236346 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1245488642) · Data from the CMS NPPES public registry.