NPPES file of Aug 9, 2026

Shawn Yeow Chong Ong, M.D.

Student in an Organized Health Care Education/Training Program · New Haven, CT

Shawn Yeow Chong Ong, M.D. is a student in an organized health care education/training program with a practice address in New Haven, Connecticut, and NPI 1154778512, issued on May 16, 2016. Check the license with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1154778512
Name
Shawn Yeow Chong Ong
Credential
M.D.
Primary taxonomy
Student in an Organized Health Care Education/Training Program 390200000X
Practice location
1450 Chapel St, New Haven, CT 06511
Phone
(203) 789-4044
Enumerated
May 16, 2016
Record last updated
Jun 26, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20210706001692); accepts Medicare assignment
Medical or professional school
University Of Arizona College Of Medicine, 2016
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1450 Chapel St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Pirjo Aalto-Fischer, LCSWClinical Social Worker1225473655
  2. Elie AbdelnourPsychiatry Physician1790346070
  3. Katherine AdamsSpeech-Language Pathologist1023851821
  4. Oluwatosin Adeyemo, M.D. , MPHObstetrics Physician1447696844
  5. Elizabeth Ahmed, M.D.Family Medicine Physician1376551879
  6. Sohee Ahn, PHARMDPharmacist1649894387

Verify Shawn Yeow Chong Ong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Connecticut board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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36% more Medicare Part D claims than the average student in an organized health care education/training program in 2024

251 Medicare Part D claims for 39 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D. 40 claims were for opioids.

  1. Shawn Ong251
  2. Specialty average185

Most prescribed

  1. Pregabalin38 claims
  2. Amlodipine Besylate18 claims
  3. Omeprazole17 claims
  4. Oxycodone Hcl16 claims
  5. Fluticasone Propionate13 claims
  6. Rosuvastatin Calcium13 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

  1. Cornell Scott Hill Health CorporationNew Haven, CT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Shawn Yeow Chong Ong among 5,184 student in an organized health care education/training program records in Connecticut

Shawn Yeow Chong Ong, M.D. is one of 5,184 student in an organized health care education/training program records with a practice address in Connecticut. 32% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 11% of them.

  • NPI issued2016 · 11% of these records are older, 87% newer
  • In a Medicare fileYes · 32% of these records are
  • In the CMS Doctors and Clinicians fileYes · 4% of these records are
  • Graduated2016 · median 2017 among the 207 with a school on file
  • Record last updated2019 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,845 student in an organized health care education/training program records list a practice address in New Haven

They are 1,845 of the 9,793 NPPES records with a practice address in New Haven, and 5,184 student in an organized health care education/training program records in Connecticut.

The 8 student in an organized health care education/training program records with the nearest ZIP codes

  1. Rachelle Busman, M.A.New Haven, CT 065111649503517
  2. Philip Butler, M.D.New Haven, CT 065111063723732
  3. Heather Douglas-Palumberi, M.A.New Haven, CT 065111093035693
  4. Margaret Gaskell, B.ANew Haven, CT 065111740513613
  5. Robert Hayter, M.D.New Haven, CT 065111134455801
  6. Gina Moreggi, BANew Haven, CT 065111750614624
  7. Andrew Nerlinger, M.D.New Haven, CT 065111386845204
  8. Marsha Nevers, M.A.New Haven, CT 065111487978748

Common questions

What is Shawn Yeow Chong Ong, M.D.'s NPI number?

Shawn Yeow Chong Ong, M.D.'s National Provider Identifier (NPI) is 1154778512, issued on May 16, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Shawn Yeow Chong Ong, M.D. located?

The NPPES record lists a practice address at 1450 Chapel St, New Haven, CT, 06511. Phone: (203) 789-4044. Providers update this record themselves, so call before visiting.

How can I verify Shawn Yeow Chong Ong, M.D.'s license?

Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.

How much does Shawn Yeow Chong Ong, M.D. prescribe under Medicare Part D?

In 2024, Shawn Yeow Chong Ong, M.D. had 251 Medicare Part D claims for 39 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.