TONG GAN M.D.
NPI 1275941791
Colon & Rectal Surgery in Grand Rapids, MI
About Tong Gan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TONG GAN M.D. (NPI 1275941791) is an individual colon & rectal surgery provider in Grand Rapids, Michigan, licensed in Michigan (4301507236) and active in the NPI registry since July 2014. He is enrolled in Medicare PECOS, is affiliated with Lakeland Hospital, St Joseph, and is a graduate of Ohio State University College Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses
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
Tong Gan 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 Tong Gan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Grand Rapids, MI 49546
- Reassigned Medicare billing, Michigan enrollment
- 2,446 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 8
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Lakeland Hospital, St Joseph
Acute Care Hospitals · St Joseph, MISpectrum Health
Acute Care Hospitals · Grand Rapids, MICorewell Health Pennock Hospital
Critical Access Hospitals · Hastings, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49546 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
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 Tong Gan's NPI number?
The NPI number for Tong Gan is 1275941791. It was assigned to this individual provider in the NPPES registry on July 28, 2014.
Where is Tong Gan located?
Tong Gan practices at 4100 Lake Dr SE Ste 205, Grand Rapids, MI 49546. The listed phone number is (616) 267-7100.
What is Tong Gan's specialty?
The primary specialty registered for this NPI is Colon & Rectal Surgery with taxonomy code 208C00000X.
Is Tong Gan enrolled in Medicare?
Yes. Tong Gan 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 Tong Gan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tong Gan reassigns Medicare benefits to Spectrum Health Primary Care Partners (Grand Rapids, MI). 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 Tong Gan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tong Gan accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Tong Gan 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 Tong Gan affiliated with any hospitals?
According to CMS data, Tong Gan is affiliated with Lakeland Hospital, St Joseph, Spectrum Health and Corewell Health Pennock Hospital.
When was this NPI record last updated?
The NPPES record for Tong Gan was last updated on October 10, 2022. 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.
# Tong Gan, M.D. · NPI 1275941791
Colon & Rectal Surgery physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since July 28, 2014.
## Identity
- **NPI:** 1275941791 (Entity type: Individual)
- **Enumerated:** July 28, 2014
- **Primary specialty:** Colon & Rectal Surgery · taxonomy 208C00000X
- **State license:** 4301507236 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 4100 LAKE DR SE STE 205, Grand Rapids, MI 49546-8292
- **Phone:** (616) 267-7100
## 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:** Spectrum Health Primary Care Partners (NPI 1528374683, Grand Rapids, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio State University College Of Medicine, class of 2014
## Record status
- **NPPES last updated:** October 10, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1275941791) · Data from the CMS NPPES public registry.