Andrew Todd Marshall, M.D.
Gastroenterology Physician · Hewlett, NY
Andrew Todd Marshall, M.D. is a gastroenterology physician with a practice address in Hewlett, New York, and NPI 1801846290, issued on May 10, 2006. Check the license (New York 193405, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Andrew Todd Marshall
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 193405 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1800 Rockaway Ave, Hewlett, NY 11557
- Phone
- (516) 593-2629
- Enumerated
- May 10, 2006
- Record last updated
- Aug 15, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090909000297); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,797 in New York → Look up another NPI →
Also registered at 1800 Rockaway Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Andrew Todd Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 193405Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,188 Medicare Part D claims for 321 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium368 claims
- Omeprazole154 claims
- Amlodipine Besylate136 claims
- Simvastatin111 claims
- Losartan Potassium93 claims
- Sod Sulf-Potass Sulf-Mag Sulf88 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Optum Medical Care PCMount Kisco, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Todd Marshall among 1,797 gastroenterology physician records in New York
Andrew Todd Marshall, M.D. is one of 1,797 gastroenterology physician records with a practice address in New York. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 44% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1992 · median 1999 among the 1,378 with a school on file
- Record last updated2018 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in New York
There are 1,797 gastroenterology physician records in New York.
All 1,797 in New York → Every provider in Hewlett → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Steven Kadish, MDLawrence, NY 115591154303683
- Yitzhak Twersky, M.D.Lawrence, NY 115591386625556
- Syed Karim, DOEast Meadow, NY 115541073047114
- Seth LipkaEast Meadow, NY 115541831404052
- Paul Mustacchia, M.D.East Meadow, NY 115541285693820
- Richard Rubin, MDEast Meadow, NY 115541851381750
- Atul Sinha, MDEast Meadow, NY 115541427518513
- Joel Loewenstein, MDLong Beach, NY 115611174501795
Common questions
What is Andrew Todd Marshall, M.D.'s NPI number?
Andrew Todd Marshall, M.D.'s National Provider Identifier (NPI) is 1801846290, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Todd Marshall, M.D. located?
The NPPES record lists a practice address at 1800 Rockaway Ave, Hewlett, NY, 11557. Phone: (516) 593-2629. Providers update this record themselves, so call before visiting.
How can I verify Andrew Todd Marshall, M.D.'s license?
NPPES lists New York license number 193405, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Andrew Todd Marshall, M.D. prescribe under Medicare Part D?
In 2024, Andrew Todd Marshall, M.D. had 2,188 Medicare Part D claims for 321 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Andrew Todd Marshall, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.