Physician Profile
Surianarayanan Karthikeyan, MD
Unclaimed ProfileAbout Dr. Karthikeyan
Surianarayanan Karthikeyan, MD practices gastroenterology in Fargo, ND. According to Medicare claims data, Surianarayanan cared for 235 Medicare patients across 247 services. The services billed most often include biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. The provider's National Provider Identifier (NPI) is 1881725836.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (701) 234-2525
- Email not available
Practice Locations
321 8TH AVE N
Fargo, ND 58102
80 WEST AVENUE SUITE 203
Brockport, NY 14420
50 LeRoy St
Potsdam, NY 13676
105 County Route 45A Ste 400
Oswego, NY 13126
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Most searched procedures
Lower endoscopy
Upper endoscopy
Capsule and physiology testing
Diagnostic Testing
Liver procedures
Treatments
Procedures Most Often Billed to Medicare
247 services · 235 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
72 | As often as other peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
51 | As often as other peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
26 | Less often than most peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
17 | As often as other peers in Gastroenterology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
35 | As often as other peers in Gastroenterology |
| Colorectal cancer screening; colonoscopy on individual at high risk | Billing code | G0105 |
17 | Less often than most peers in Gastroenterology |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
15 | Less often than most peers in Gastroenterology |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
14 | Less often than most peers in Gastroenterology |
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 gastroenterologists at this location 1
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 — 28 related providers in 4 groups
Other gastroenterologists in Fargo 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1979 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 5
Providers in ND who bill this service to Medicare most often.
Common questions
What does Dr. Karthikeyan specialize in?
Dr. Karthikeyan is a gastroenterologist in Fargo, ND. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Dr. Karthikeyan located?
Dr. Karthikeyan is listed at 321 8Th Ave N, Fargo, ND 58102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Karthikeyan's phone number?
The number on file is (701) 234-2525. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Karthikeyan's NPI number?
Dr. Karthikeyan's National Provider Identifier is 1881725836. 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. Karthikeyan go to medical school?
Dr. Karthikeyan attended Other, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Karthikeyan been practicing?
Dr. Karthikeyan has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Karthikeyan do most often?
According to Medicare billing data, Dr. Karthikeyan performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, 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
Has Dr. Karthikeyan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Karthikeyan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.