Lawrence Tse Siew, M.D.
Pediatric Emergency Medicine (Pediatrics) Physician · New Haven, CT
Lawrence Tse Siew, M.D. is a pediatric emergency medicine (pediatrics) physician with a practice address in New Haven, Connecticut, and NPI 1891933727, issued on Jan 30, 2009. Check the license (Connecticut 050576, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Lawrence Tse Siew
- Credential
- M.D.
- Primary taxonomy
- Pediatric Emergency Medicine (Pediatrics) Physician 2080P0204X
- License numbers
- 050576 CT
244113 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 York St Ste 1F, New Haven, CT 06511
- Phone
- (203) 737-7445
- Enumerated
- Jan 30, 2009
- Record last updated
- Jun 29, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120330000025); accepts Medicare assignment
- Medical or professional school
- Rutgers New Jersey Medical School, 2005
- Entity
- Type 1 · individual
8 nearest pediatric emergency medicine (pediatrics) physician records → All 50 in Connecticut → Look up another NPI →
Also registered at 100 York St Ste 1F
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie Leviter, MDPediatric Emergency Medicine (Pediatrics) Physician1497191472
- Storm Liebling, M.D.Emergency Medicine Physician1326466921
Verify Lawrence Tse Siew in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 050576Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lawrence Tse Siew among 50 pediatric emergency medicine (pediatrics) physician records in Connecticut
Lawrence Tse Siew, M.D. is one of 50 pediatric emergency medicine (pediatrics) physician records with a practice address in Connecticut. 18% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 40% newer
- In a Medicare fileYes · 18% of these records are
- In the CMS Doctors and Clinicians fileYes · 20% of these records are
- Graduated2005 · median 2009 among the 10 with a school on file
- Record last updated2012 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0204X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Emergency Medicine (Pediatrics) Physician providers in Connecticut
There are 50 pediatric emergency medicine (pediatrics) physician records in Connecticut.
All 50 in Connecticut → Every provider in New Haven → Pediatric Emergency Medicine (Pediatrics) Physician nationwide →
The 8 pediatric emergency medicine (pediatrics) physician records with the nearest ZIP codes
- Paul Aronson, M.D.New Haven, CT 065111225235682
- Julie Leviter, MDNew Haven, CT 065111497191472
- Sofia Grigoria Athanasopoulou, M.D.New Haven, CT 065101518522945
- Marc Auerbach, MDNew Haven, CT 065101679623839
- Carl Baum, MDNew Haven, CT 065101740261049
- Kirsten Bechtel, MDNew Haven, CT 065101477536688
- Sonali Bhalodkar, M.D.New Haven, CT 065101790217057
- Raymond Cai, MDNew Haven, CT 065101235698127
Common questions
What is Lawrence Tse Siew, M.D.'s NPI number?
Lawrence Tse Siew, M.D.'s National Provider Identifier (NPI) is 1891933727, issued on Jan 30, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence Tse Siew, M.D. located?
The NPPES record lists a practice address at 100 York St Ste 1F, New Haven, CT, 06511. Phone: (203) 737-7445. Providers update this record themselves, so call before visiting.
How can I verify Lawrence Tse Siew, M.D.'s license?
NPPES lists Connecticut license number 050576, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.