Doctor profile · Federal record
Dr. Mary Marshall
Gastroenterology Physician (CMS: Internal Medicine) · Internal Medicine Physician · Mobile, AL
- NPI 1336502822
- Accepts Medicare
- MIPS 94.4 / 100 · 2023
- 10 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
75 S University Blvd Unit 6000
Mobile, AL 366083274
(251) 660-5555
fax (251) 660-5559 - Mailing address
-
Po Box 746450
Atlanta, GA 303746450
Credentials & registration
- NPI registered
- April 2016 — 10 yrs on file
- Profile last updated
- June 17, 2022
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State licenses (2)
- Alabama #MD.36662 · Alabama #36662
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1336502822. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
413
Distinct HCPCS
9
Medicare allowed
$44,625
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 151 | 99 | $91 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 59 | 56 | $215 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 50 | 47 | $78 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 41 | 41 | $124 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 35 | 34 | $88 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 35 | 19 | $74 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 19 | 18 | $59 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 12 | 12 | $164 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 11 | 11 | $47 |
In context: peer comparison
Among 13 peers in Mobile Gastroenterology Physician, average services per provider: 48. This provider delivers 8.6× the peer median.Open Payments
Industry payments received
All-time total
$970
Transactions
52
Manufacturers
9
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 29 | $457.98 | |
| Takeda Pharmaceuticals U.S.A., INC. | 11 | $277.68 | |
| Regeneron Healthcare Solutions, INC. | 2 | $56.79 | |
| Lilly USA, LLC | 3 | $50.12 | |
| Evoke Pharma, INC. | 2 | $34.40 | |
| Celgene Corporation | 2 | $33.60 | |
| Genzyme Corporation | 1 | $30.44 | |
| Aimmune Therapeutics, INC. | 1 | $14.60 | |
| Phathom Pharmaceuticals, INC. | 1 | $14.17 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
497
Patients
156
Total drug cost
$202,183
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 111 | 39 | $1,354 |
| Pantoprazole Sodium | Generic | 101 | 31 | $1,446 |
| Linzess (Linaclotide) | Brand | 81 | 20 | $47,811 |
| Famotidine | Generic | 79 | 25 | $1,339 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 47 | 41 | $3,685 |
| Xifaxan (Rifaximin) | Brand | 14 | 0 | $37,063 |
| Entyvio (Vedolizumab) | Brand | 13 | 0 | $106,288 |
| Ondansetron Hcl | Generic | 13 | 0 | $111 |
| Promethazine Hcl | Generic | 13 | 0 | $102 |
| Sucralfate | Generic | 13 | 0 | $1,175 |
Hospital affiliations
Frequently asked questions
What is Dr. Mary Marshall's medical specialty?
Dr. Mary Marshall practices Gastroenterology Physician in Mobile, AL.
Where does Dr. Mary Marshall practice?
Dr. Mary Marshall practices at 75 S University Blvd Unit 6000, Mobile, AL 366083274. Office phone: 2516605555.
What is Dr. Mary Marshall's NPI?
Dr. Mary Marshall's National Provider Identifier (NPI) is 1336502822, issued by NPPES.
Does Dr. Mary Marshall accept Medicare assignment?
Yes. Dr. Mary Marshall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Marshall commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); 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.