Robert Thomas Chatalbash, MD
Gastroenterology Physician · Bay Shore, NY
Robert Thomas Chatalbash, MD is a gastroenterology physician with a practice address in Bay Shore, New York, and NPI 1770696197, issued on Aug 17, 2006. Check the license (New York 1640901, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Robert Thomas Chatalbash
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 1640901 NY
Self-reported in NPPES; status is on the state search - Practice location
- 375 East Main Street, Bay Shore, NY 11706
- Phone
- (631) 968-8288
- Enumerated
- Aug 17, 2006
- Record last updated
- Feb 16, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (631) 968-8268
- Medicaid ID
- 01257249 NY
- Medicare enrollment
- Enrolled (PECOS I20100521000116); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,797 in New York → Look up another NPI →
Also registered at 375 East Main Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Thomas Chatalbash 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 1640901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% more Medicare Part D claims than the average gastroenterology physician in 2024
1,464 Medicare Part D claims for 361 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium366 claims
- Omeprazole301 claims
- Dicyclomine Hcl133 claims
- Famotidine111 claims
- Linzess59 claims
- Sod Sulf-Potass Sulf-Mag Sulf56 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 PCBay Shore, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Thomas Chatalbash among 1,797 gastroenterology physician records in New York
Robert Thomas Chatalbash, MD 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
- Graduated1984 · median 1999 among the 1,378 with a school on file
- Record last updated2010 · 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 Bay Shore → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Neeraj Anand, MDBay Shore, NY 117061386874329
- Jeffrey Ashkin, MDBay Shore, NY 117061972619823
- Paul Broomfield, MDBay Shore, NY 117061043323462
- Michael Delman, MDBay Shore, NY 117061902862907
- Aaron Harrison, MDBay Shore, NY 117061487767802
- Shaliesha Hinds Allen, MDBay Shore, NY 117061629562335
- Frank Karpowicz, MDBay Shore, NY 117061134232556
- Darius Sorbi, M.D.Bay Shore, NY 117061598726077
Common questions
What is Robert Thomas Chatalbash, MD's NPI number?
Robert Thomas Chatalbash, MD's National Provider Identifier (NPI) is 1770696197, issued on Aug 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Thomas Chatalbash, MD located?
The NPPES record lists a practice address at 375 East Main Street, Bay Shore, NY, 11706. Phone: (631) 968-8288. Providers update this record themselves, so call before visiting.
How can I verify Robert Thomas Chatalbash, MD's license?
NPPES lists New York license number 1640901, 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 Robert Thomas Chatalbash, MD prescribe under Medicare Part D?
In 2024, Robert Thomas Chatalbash, MD had 1,464 Medicare Part D claims for 361 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Robert Thomas Chatalbash, MD'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.