Robert Wiesen, MD
NPI 1437103678 · Gastroenterology Physician · Somerville, NJ
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Wiesen, MD is a Gastroenterology Physician provider in Somerville, NJ (NPI 1437103678).
Provider details
- NPI number
- 1437103678
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA07943500 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
865 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 306 | $136 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 123 | $97 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 87 | $178 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 76 | $143 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 74 | $8 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 262 | 91 |
| Pantoprazole Sodium | 95 | 29 |
| Linaclotidebrand: Linzess | 67 | 18 |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab | 41 | 41 |
| Dicyclomine Hcl | 41 | 17 |
| Famotidine | 40 | 14 |
| Mesalamine | 30 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,075 across 58 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-20
- Last updated
- 2010-02-24
Frequently asked questions
- What is Robert Wiesen's NPI number?
- Robert Wiesen's National Provider Identifier (NPI) is 1437103678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Wiesen's specialty?
- Robert Wiesen is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Wiesen located?
- Robert Wiesen's practice location on file with NPPES is 286 E Main St, Somerville, NJ 08876-3006.
- What is Robert Wiesen's phone number?
- The practice phone number listed in the NPPES registry for Robert Wiesen is (908) 231-1999.
- Does Robert Wiesen accept Medicare?
- Robert Wiesen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Wiesen's NPI active?
- Yes — Robert Wiesen's NPI (1437103678) is active in the NPPES registry as of the last update on 2010-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.