Onyoo Park
Emergency Medicine Physician · Boston, MA
Onyoo Park is an emergency medicine physician with a practice address in Boston, Massachusetts, and NPI 1073269965, issued on Mar 1, 2022. Check the license (Massachusetts 3014461, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Onyoo Park
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 3014461 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Harrison Ave, Boston, MA 02118
- Phone
- (617) 638-8000
- Enumerated
- Mar 1, 2022
- Record last updated
- Jun 5, 2023
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 800 Harrison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elaina AlzaibakStudent in an Organized Health Care Education/Training Program1730027269
- Sheyla BarriosCase Manager/Care Coordinator1174359723
- Alexa Baughan, MDEmergency Medicine Physician1225788086
- Bezawit BegosewCase Manager/Care Coordinator1508683491
- Gina Berrettoni, PTAPhysical Therapy Assistant1740602903
- Aubrey Brown, MDStudent in an Organized Health Care Education/Training Program1962105759
Verify Onyoo Park in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 3014461Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average emergency medicine physician in 2024
29 Medicare Part D claims for 22 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.
Onyoo Park among 1,829 emergency medicine physician records in Massachusetts
Onyoo Park is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% 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 95% of them.
- NPI issued2022 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2023 · 57% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
543 emergency medicine physician records list a practice address in Boston
They are 543 of the 41,865 NPPES records with a practice address in Boston, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Boston → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Evan Berg, MDBoston, MA 021181982692596
- Edward Bernstein, MDBoston, MA 021181568434926
- Andreas Dewitz, MDBoston, MA 021181740267434
- Kathryn Dyer, MDBoston, MA 021181851363048
- James Feldman, MDBoston, MA 021181801868682
- Jerrilyn Jones, MDBoston, MA 021181467435396
- Joseph Kahn, M.D.Boston, MA 021181144293572
- Ricky Kue, M.D., M.P.H.Boston, MA 021181134102395
Common questions
What is Onyoo Park's NPI number?
Onyoo Park's National Provider Identifier (NPI) is 1073269965, issued on Mar 1, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Onyoo Park located?
The NPPES record lists a practice address at 800 Harrison Ave, Boston, MA, 02118. Phone: (617) 638-8000. Providers update this record themselves, so call before visiting.
How can I verify Onyoo Park's license?
NPPES lists Massachusetts license number 3014461, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Onyoo Park prescribe under Medicare Part D?
In 2024, Onyoo Park had 29 Medicare Part D claims for 22 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.