Christopher Marshall, M.D.
NPI 1942306261 · Gastroenterology Physician · Worcester, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Marshall, M.D. is a Gastroenterology Physician provider in Worcester, MA (NPI 1942306261).
Provider details
- NPI number
- 1942306261
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 234202 (MA)
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
625 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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 94 | $249 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 63 | $97 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 58 | $51 |
| Imaging of Digestive Tract Done From the Inside of the Digestive Tract91110 | 56 | $113 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 54 | $131 |
| 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 Monito |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 102 | 33 |
| Omeprazole | 96 | 26 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 88 | 87 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 77 | 75 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 48 | 48 |
| Famotidine | 20 | — |
| Linaclotidebrand: Linzess |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,353 across 10 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
Additional practice locations (3)
- 157 Union StMarlborough, MA 01752-1228Phone: (508) 334-3068
- 21 Eastern AveWorcester, MA 01605-3094Phone: (508) 856-2500
- 119 Belmont StWorcester, MA 01605-2903Phone: (508) 334-3068
Registry dates
- Enumerated
- 2006-09-15
- Last updated
- 2024-05-15
- Certified
- 2024-05-15
Frequently asked questions
- What is Christopher Marshall's NPI number?
- Christopher Marshall's National Provider Identifier (NPI) is 1942306261, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Marshall's specialty?
- Christopher Marshall is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Marshall located?
- Christopher Marshall's practice location on file with NPPES is 55 Lake Ave N, Worcester, MA 01655-0002.
- What is Christopher Marshall's phone number?
- The practice phone number listed in the NPPES registry for Christopher Marshall is (508) 334-3068.
- Does Christopher Marshall accept Medicare?
- Christopher Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Marshall's NPI active?
- Yes — Christopher Marshall's NPI (1942306261) is active in the NPPES registry as of the last update on 2024-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.