Shirley Ponnaiya, DO
Internal Medicine Physician · Riverhead, NY
Shirley Ponnaiya, DO is an internal medicine physician with a practice address in Riverhead, New York, and NPI 1235870676, issued on Apr 6, 2022. Check the license (New York 335729, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Shirley Ponnaiya
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 335729 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1 Heroes Way, Riverhead, NY 11901
- Phone
- (631) 506-4311
- Enumerated
- Apr 6, 2022
- Record last updated
- Aug 20, 2025
- Medicare enrollment
- Enrolled (PECOS I20250731002102); accepts Medicare assignment
- Medical or professional school
- Rocky Vista University College Of Osteopathic Med, 2022
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 1 Heroes Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shah Ahmed, MDAnesthesiology Physician1215399902
- Orseola Arapi, MDStudent in an Organized Health Care Education/Training Program1003610023
- Chloe Argenziano, PA-CSurgical Physician Assistant1871475889
- Kian AvillaStudent in an Organized Health Care Education/Training Program1518807999
- Maria AzimInternal Medicine Physician1750969895
Verify Shirley Ponnaiya 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 335729Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
145 Medicare Part D claims for 54 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium20 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.
Bills Medicare through one group practice
- Central Suffolk HospitalRiverhead, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shirley Ponnaiya among 12,067 internal medicine physician records in New York
Shirley Ponnaiya, DO is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2022 · median 2002 among the 7,221 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 internal medicine physician records list a practice address in Riverhead
They are 16 of the 982 NPPES records with a practice address in Riverhead, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Riverhead → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Maria AzimRiverhead, NY 119011750969895
- Afzal ButtRiverhead, NY 119011083653794
- Eugenio Crisostomo, M.D.Riverhead, NY 119011225099625
- Maureen Crowley, MD, MPHRiverhead, NY 119011346324209
- Michael Dempsey, M.D.Riverhead, NY 119011770508079
- Marie-Jose Dorval-Dorcely, M.DRiverhead, NY 119011093894446
- Michael Ghiassi, DORiverhead, NY 119011255950440
- Laura Gilmartin, M.D.Riverhead, NY 119011134296247
Common questions
What is Shirley Ponnaiya, DO's NPI number?
Shirley Ponnaiya, DO's National Provider Identifier (NPI) is 1235870676, issued on Apr 6, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Shirley Ponnaiya, DO located?
The NPPES record lists a practice address at 1 Heroes Way, Riverhead, NY, 11901. Phone: (631) 506-4311. Providers update this record themselves, so call before visiting.
How can I verify Shirley Ponnaiya, DO's license?
NPPES lists New York license number 335729, 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 Shirley Ponnaiya, DO prescribe under Medicare Part D?
In 2024, Shirley Ponnaiya, DO had 145 Medicare Part D claims for 54 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.