Doctor profile · Federal record
Dr. Christopher Marshall, M.D.
Gastroenterology Physician (CMS: Gastroenterology) · Worcester, MA
- NPI 1942306261
- Accepts Medicare
- MIPS 89.0 / 100 · 2023
- 22 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
55 Lake Ave N
Worcester, MA 016550002
(508) 334-3068 - Additional location
-
119 Belmont St
Worcester, MA 016052903 - Additional location
-
157 Union St
Marlborough, MA 017521228 - Additional location
-
21 Eastern Ave
Worcester, MA 016053094
(508) 856-2500 - Mailing address
-
Po Box 415348
Boston, MA 022415348
Show 1 more location
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- May 15, 2024
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Massachusetts #234202
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1942306261. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
601
Distinct HCPCS
10
Medicare allowed
$77,800
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 74 | 74 | $133 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 72 | 72 | $243 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 56 | 49 | $114 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 53 | 42 | $81 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 52 | 48 | $99 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 50 | 50 | $91 | |
91110 |
Imaging of digestive tract done from the inside of the digestive tract | 42 | 41 | $114 | |
G0500 |
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 | 30 | 30 | $5 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 25 | 25 | $136 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 24 | 23 | $94 |
In context: peer comparison
Among 20 peers in this city , average services per provider: 36. This provider delivers 17× the peer median.Open Payments
Industry payments received
All-time total
$2,353
Transactions
10
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Medtronic, Inc. | 4 | $1,840.27 | |
| Boston Scientific Corporation | 4 | $400.62 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $71.48 | |
| Janssen Biotech, Inc. | 1 | $40.21 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
502
Patients
253
Total drug cost
$49,933
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 104 | 36 | $2,474 |
| Gavilyte-C (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 87 | 81 | $1,578 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 74 | 74 | $1,098 |
| Omeprazole | Generic | 68 | 24 | $1,838 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 38 | 38 | $2,553 |
| Linzess (Linaclotide) | Brand | 34 | 0 | $19,306 |
| Famotidine | Generic | 25 | 0 | $375 |
| Mesalamine | Generic | 19 | 0 | $12,845 |
| Colestipol Hcl | Generic | 15 | 0 | $1,146 |
| Loperamide (Loperamide Hcl) | Brand | 14 | 0 | $286 |
Hospital affiliations
Frequently asked questions
What is Dr. Christopher Marshall's medical specialty?
Dr. Christopher Marshall practices Gastroenterology Physician in Worcester, MA.
Where does Dr. Christopher Marshall practice?
Dr. Christopher Marshall practices at 55 Lake Ave N, Worcester, MA 016550002. Office phone: 5083343068.
What is Dr. Christopher Marshall's NPI?
Dr. Christopher Marshall's National Provider Identifier (NPI) is 1942306261, issued by NPPES.
Does Dr. Christopher Marshall accept Medicare assignment?
Yes. Dr. Christopher Marshall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Christopher Marshall commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (HCPCS 43239). Source: CMS Medicare Physician & Other Practitioners file.