DIEM HONG VO DO
NPI 1881981553
Family Medicine in Coldwater, MI
About Diem Hong Vo Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIEM HONG VO DO (NPI 1881981553) is an individual family medicine provider in Coldwater, Michigan, licensed in California (20A13901) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS and maintains a secondary practice location in Bluefield.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Diem Hong Vo Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Diem Vo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lancaster, CA 93534
- Reassigned Medicare billing, California enrollment
- 13,921 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49036 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 6
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 Diem Vo's NPI number?
The NPI number for Diem Vo is 1881981553. It was assigned to this individual provider in the NPPES registry on July 1, 2011.
Where is Diem Vo located?
Diem Vo practices at 370 E Chicago St, Coldwater, MI 49036. The listed phone number is (517) 279-5378.
What is Diem Vo's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Diem Vo enrolled in Medicare?
Yes. Diem Vo is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Diem Vo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diem Vo reassigns Medicare benefits to Southern California Permanente Medical Group (Lancaster, CA). 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 Diem Vo'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 Diem Vo was last updated on December 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Diem Hong Vo, DO · NPI 1881981553
Family Medicine physician in Coldwater, Michigan. Individual provider, active in the CMS NPPES registry since July 1, 2011.
## Identity
- **NPI:** 1881981553 (Entity type: Individual)
- **Enumerated:** July 1, 2011
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 20A13901 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 370 E CHICAGO ST, Coldwater, MI 49036-2062
- **Phone:** (517) 279-5378
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Southern California Permanente Medical Group (NPI 1982863783, Lancaster, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 15, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1881981553) · Data from the CMS NPPES public registry.