Doctor profile · Federal record
Dr. Andrew Marshall, M.D.
Gastroenterology Physician (CMS: Internal Medicine) · Hewlett, NY
- NPI 1801846290
- Accepts Medicare
- MIPS 84.1 / 100 · 2023
- 34 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1800 Rockaway Ave, Suite 201
Hewlett, NY 11557
(516) 593-2629 - Mailing address
-
16 Farmstead Ln
Brookville, NY 115452602
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- August 15, 2018
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- New York #193405
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1801846290. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
4,345
Distinct HCPCS
10
Medicare allowed
$241,449
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
36415 |
Insertion of needle into vein for collection of blood sample | 472 | 214 | $8 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 446 | 218 | $147 | |
80053 |
Blood test, comprehensive group of blood chemicals | 436 | 216 | $10 | |
80061 |
Blood test, lipids (cholesterol and triglycerides) | 415 | 207 | $13 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 291 | 167 | $103 | |
85025 |
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 222 | 178 | $8 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 195 | 182 | $17 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 160 | 159 | $206 | |
84443 |
Blood test, thyroid stimulating hormone (tsh) | 129 | 77 | $16 | |
81003 |
Automated urinalysis test | 121 | 119 | $2 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 98. This provider delivers 44× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,523
Patients
425
Total drug cost
$23,710
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 364 | 104 | $4,408 |
| Omeprazole | Generic | 163 | 50 | $2,556 |
| Amlodipine Besylate | Generic | 155 | 45 | $1,724 |
| Simvastatin | Generic | 110 | 30 | $1,300 |
| Losartan Potassium | Generic | 97 | 26 | $1,264 |
| Levothyroxine Sodium | Generic | 92 | 23 | $1,607 |
| Olmesartan Medoxomil | Generic | 79 | 17 | $1,815 |
| Pantoprazole Sodium | Generic | 76 | 24 | $1,052 |
| Zolpidem Tartrate | Generic | 73 | 19 | $535 |
| Alprazolam | Generic | 62 | 15 | $641 |
Frequently asked questions
What is Dr. Andrew Marshall's medical specialty?
Dr. Andrew Marshall practices Gastroenterology Physician in Hewlett, NY.
Where does Dr. Andrew Marshall practice?
Dr. Andrew Marshall practices at 1800 Rockaway Ave, Hewlett, NY 11557. Office phone: 5165932629.
What is Dr. Andrew Marshall's NPI?
Dr. Andrew Marshall's National Provider Identifier (NPI) is 1801846290, issued by NPPES.
Does Dr. Andrew Marshall accept Medicare assignment?
Yes. Dr. Andrew Marshall accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Andrew Marshall commonly perform?
Top Medicare-reported procedures in 2023: Insertion of needle into vein for collection of blood sample (HCPCS 36415); Established patient office or other outpatient visit (HCPCS 99214); Blood test, comprehensive group of blood chemicals (HCPCS 80053). Source: CMS Medicare Physician & Other Practitioners file.