Physician Profile
Tong Gan, M.D.
Unclaimed ProfileAbout Dr. Gan
Tong Gan, M.D. is a healthcare provider in Grand Rapids, MI specializing in colon & rectal surgery. Tong trained at Ohio State University College of Medicine, graduating in 2014. Medicare claims data shows Tong provided 147 services to 139 patients. The services billed most often include moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monit, subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, and removal of polyps or growths of large bowel using an endoscope with mechanical snare.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (616) 267-7100
- Email not available
Practice Locations
4100 LAKE DR SE STE 205
Grand Rapids, MI 49546
Procedures Most Often Billed to Medicare
147 services · 139 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
20 | As often as other peers in Colon & Rectal Surgery |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
17 | As often as other peers in Colon & Rectal Surgery |
| Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monit | Billing code | G0500 |
31 | As often as other peers in Colon & Rectal Surgery |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
21 | Less often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
17 | Less often than most peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
15 | Less often than most peers in Colon & Rectal Surgery |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
13 | Less often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
13 | Less often than most peers in Colon & Rectal Surgery |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other colorectal surgeons at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other colorectal surgeons in Grand Rapids 6
Same specialty, same city.
Trained at Ohio State University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2014 at Ohio State University College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 8
Providers in MI who bill this service to Medicare most often.
Common questions
What does Tong Gan specialize in?
Tong Gan is a colorectal surgeon in Grand Rapids, MI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Colon & Rectal Surgery”.
NPI registry
Where is Tong Gan located?
Tong Gan is listed at 4100 Lake Dr Se Ste 205, Grand Rapids, MI 49546. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Tong Gan's phone number?
The number on file is (616) 267-7100. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Tong Gan?
Tong Gan's National Provider Identifier is 1275941791. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Tong Gan train?
Tong Gan attended Ohio State University College of Medicine, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Tong Gan have?
Tong Gan has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What does Tong Gan do most often?
According to Medicare billing data, Tong Gan performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of large bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Tong Gan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Tong Gan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.