Ashby Thomas, M.D.
Gastroenterology Physician · New Hyde Park, NY
Ashby Thomas, M.D. is a gastroenterology physician with a practice address in New Hyde Park, New York, and NPI 1366767154, issued on Apr 5, 2010. Check the license (New York 263731, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ashby Thomas
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 263731 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2001 Marcus Ave, New Hyde Park, NY 11042
- Phone
- (516) 775-7770
- Enumerated
- Apr 5, 2010
- Record last updated
- Oct 7, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161206001999); accepts Medicare assignment
- Medical or professional school
- Js Weill Medical College, Cornell University, 2010
- 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 2001 Marcus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ashby Thomas 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 263731Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average gastroenterology physician in 2024
1,065 Medicare Part D claims for 327 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Omeprazole184 claims
- Pantoprazole Sodium167 claims
- Famotidine133 claims
- Gavilyte-G52 claims
- Mesalamine52 claims
- Dicyclomine Hcl39 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 MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- North Shore Lij Medical Group AT North Nassau, PCNew Hyde Park, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ashby Thomas among 1,797 gastroenterology physician records in New York
Ashby Thomas, 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 2010, is newer than 73% of them.
- NPI issued2010 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2010 · median 1999 among the 1,378 with a school on file
- Record last updated2016 · 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).
40 gastroenterology physician records list a practice address in New Hyde Park
They are 40 of the 4,217 NPPES records with a practice address in New Hyde Park, and 1,797 gastroenterology physician records in New York.
All 1,797 in New York → Every provider in New Hyde Park → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Gregory Ackert, M.D.New Hyde Park, NY 110421417991803
- Allen Ahdoot, M.D.New Hyde Park, NY 110421053364323
- Paul Berg, MDNew Hyde Park, NY 110421003870429
- Jeffrey Berger, M.D.New Hyde Park, NY 110421174526941
- Eugene Bonapace, M.D.New Hyde Park, NY 110421053316505
- Anthony Celifarco, M.D.New Hyde Park, NY 110421205839305
- Robert Gal, MDNew Hyde Park, NY 110421356396675
- Lev Ginzburg, M.D.New Hyde Park, NY 110421528086212
Common questions
What is Ashby Thomas, M.D.'s NPI number?
Ashby Thomas, M.D.'s National Provider Identifier (NPI) is 1366767154, issued on Apr 5, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Ashby Thomas, M.D. located?
The NPPES record lists a practice address at 2001 Marcus Ave, New Hyde Park, NY, 11042. Phone: (516) 775-7770. Providers update this record themselves, so call before visiting.
How can I verify Ashby Thomas, M.D.'s license?
NPPES lists New York license number 263731, 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 Ashby Thomas, M.D. prescribe under Medicare Part D?
In 2024, Ashby Thomas, M.D. had 1,065 Medicare Part D claims for 327 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Ashby Thomas, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.3 of 100. 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.