Physician Profile
Unclaimed ProfileAbout KOFF
Based in Chevy Chase, MD, Jonathan M Koff, M.D. is listed in the NPI registry under gastroenterology. Jonathan graduated from Boston University School of Medicine in 1997.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Koff specialise in?
Dr. Koff is a gastroenterology in Chevy Chase, MD. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where is Dr. Koff located?
Dr. Koff is listed at 5550 FRIENDSHIP BLVD STE T90, Chevy Chase, MD 20815. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Koff's phone number?
The number on file is (301) 718-0600. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Koff's NPI number?
Dr. Koff's National Provider Identifier is 1104926302. 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 Dr. Koff go to medical school?
Dr. Koff attended Boston University School of Medicine, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Koff been practising?
Dr. Koff has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Koff do most often?
According to Medicare billing data, Dr. Koff performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and biopsy of large bowel using a flexible endoscope; provides treatments such as administration of chemotherapy into vein, 1 hour or less and infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Koff confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Koff. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (301) 718-0600
- Email not available
Practice Locations
5550 FRIENDSHIP BLVD STE T90
Chevy Chase, MD 20815
Procedures Most Often Billed to Medicare
22,579 services · 1,284 patients · 16 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
227 |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
112 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
53 |
| Insertion of guide wire with dilation of esophagus using a flexible endoscope | Procedure | 43248 |
25 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
13 |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
78 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
31 |
| Injection, vedolizumab, intravenous, 1 mg | Drug given | J3380 |
19,800 |
| Injection, infliximab, excludes biosimilar, 10 mg | Drug given | J1745 |
1,420 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
373 |
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 gastroenterology specialists at this location 6
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
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 — 29 related providers in 4 groups
Other gastroenterology specialists in Chevy Chase 5
Same specialty, same city.
Trained at Boston University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Boston University School 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 MD who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.