Physician Profile
Nathan A. Merriman, MD
Unclaimed ProfileAbout Dr. Merriman
Nathan A. Merriman, MD is a healthcare provider in Newark, DE specializing in gastroenterology. Nathan trained at University of North Carolina at Chapel Hill School of Medicine, graduating in 2002. Nathan is also listed as specializing in specialist. According to Medicare claims data, Nathan cared for 153 Medicare patients across 166 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, and study of esophagus to assess movement. This provider record is associated with NPI 1174686042.
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
- (302) 738-5300
- Email not available
Practice Locations
4745 OGLETOWN STANTON ROAD MEDICAL ARTS PAVILION, SUITE 134
Newark, DE 19713
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
166 services · 153 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
28 | Less often than most peers in Gastroenterology |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
23 | Less often than most peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
22 | Less often than most peers in Gastroenterology |
| Study of esophagus to assess movement | Treatment | 91010 |
27 | Too few peers to compare |
| Monitoring and recording of esophageal function through nasal tube with electrode | Treatment | 91037 |
25 | Too few peers to compare |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
41 | 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 2
Same specialty, same street address — most likely the same department or group.
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.
Other gastroenterologists in Newark 6
Same specialty, same city.
More connections — 22 related providers in 3 groups
Trained at University of North Carolina at Chapel Hill School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at University of North Carolina at Chapel Hill School of Medicine 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 6
Providers in DE who bill this service to Medicare most often.
Common questions
What is Dr. Merriman's specialty?
Dr. Merriman is a gastroenterologist in Newark, DE. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where can I find Dr. Merriman?
Dr. Merriman is listed at 4745 Ogletown Stanton Road Medical Arts Pavilion, Suite 134, Newark, DE 19713. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Merriman?
The number on file is (302) 738-5300. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Merriman's NPI number?
Dr. Merriman's National Provider Identifier is 1174686042. 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
What is Dr. Merriman's medical education?
Dr. Merriman attended University of North Carolina at Chapel Hill School of Medicine, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Merriman been practicing?
Dr. Merriman has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Merriman known for?
According to Medicare billing data, Dr. Merriman 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; provides treatments such as study of esophagus to assess movement and monitoring and recording of esophageal function through nasal tube with electrode, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Merriman confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Merriman. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.