Cathy J. Chen, D.O.
Emergency Medicine Physician · Brooklyn, NY
Cathy J. Chen, D.O. is an emergency medicine physician with a practice address in Brooklyn, New York, and NPI 1306378500, issued on Mar 28, 2017. Check the license (New York 309844, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Cathy J. Chen
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 309844 NY
25MB13164400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 374 Stockholm St, Brooklyn, NY 11237
- Phone
- (718) 963-7272
- Enumerated
- Mar 28, 2017
- Record last updated
- Jul 31, 2026
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 5,025 in New York → Look up another NPI →
Also registered at 374 Stockholm St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nikoo AdiliStudent in an Organized Health Care Education/Training Program1235708330
- Valencia Adjei, MDStudent in an Organized Health Care Education/Training Program1669305793
Verify Cathy J. Chen 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 309844Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average emergency medicine physician in 2024
20 Medicare Part D claims for 17 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Cathy J. Chen among 5,025 emergency medicine physician records in New York
Cathy J. Chen, D.O. is one of 5,025 emergency medicine physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 71% of them.
- NPI issued2017 · 71% of these records are older, 25% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
719 emergency medicine physician records list a practice address in Brooklyn
They are 719 of the 64,057 NPPES records with a practice address in Brooklyn, and 5,025 emergency medicine physician records in New York.
All 5,025 in New York → Every provider in Brooklyn → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Karen Ambert, MD MPHBrooklyn, NY 112371831563071
- Erick Araujo, P.A.Brooklyn, NY 112371285650630
- Alyssa Cocchiara, D.O.Brooklyn, NY 112371750732665
- Michael GarciaBrooklyn, NY 112371801310701
- Jeanette Haslett, MDBrooklyn, NY 112371134370810
- Mark HugBrooklyn, NY 112371194068205
- Ernel Lewis, M.D.Brooklyn, NY 112371063473999
- Mary Angeli Lock, M.D.Brooklyn, NY 112371174948905
Common questions
What is Cathy J. Chen, D.O.'s NPI number?
Cathy J. Chen, D.O.'s National Provider Identifier (NPI) is 1306378500, issued on Mar 28, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Cathy J. Chen, D.O. located?
The NPPES record lists a practice address at 374 Stockholm St, Brooklyn, NY, 11237. Phone: (718) 963-7272. Providers update this record themselves, so call before visiting.
How can I verify Cathy J. Chen, D.O.'s license?
NPPES lists New York license number 309844, 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 Cathy J. Chen, D.O. prescribe under Medicare Part D?
In 2024, Cathy J. Chen, D.O. had 20 Medicare Part D claims for 17 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.