Chelsea Rachael Cosner
Child & Adolescent Psychiatry Physician · Boston, MA
Chelsea Rachael Cosner is a child & adolescent psychiatry physician with a practice address in Boston, Massachusetts, and NPI 1003393380, issued on Jul 19, 2018. Check the license (Massachusetts 1018908, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Chelsea Rachael Cosner
- Primary taxonomy
- Child & Adolescent Psychiatry Physician 2084P0804X
- License numbers
- 1018908 MA
D0090427 MD
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 724-5600
- Enumerated
- Jul 19, 2018
- Record last updated
- Oct 9, 2025
- Entity
- Type 1 · individual
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Affan Aamir, MD, PHARMD, RPHStudent in an Organized Health Care Education/Training Program1821890377
- Matthew AbadirAnesthesiology Physician1699120550
- Taimur AbbasiInternal Medicine Physician1841673522
- Megan Abbott, MDAnesthesiology Physician1730839333
- Moustafa AbdallaStudent in an Organized Health Care Education/Training Program1952046062
- Shadi Abdar Esfahani, MD, MPHDiagnostic Radiology Physician1497137590
Verify Chelsea Rachael Cosner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1018908Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 84.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Child & Adolescent Psychiatry Physician providers in Massachusetts
There are 336 child & adolescent psychiatry physician records in Massachusetts.
Other child & adolescent psychiatry physician records in Massachusetts
- Patricia Abbott, MDWestwood, MA1417001686
- Annah Abrams, MDBoston, MA1689665234
- Ashley Adams, MDBoston, MA1790342053
- David Adams, MDBoston, MA1942752993
- Peter Adams, M.D.Newton, MA1710138011
- Solomon Adelsky, M.D.Cambridge, MA1023350931
- David Agger, LICSWFalmouth, MA1588764633
- Blaise Aguirre, MDBelmont, MA1619936846
- Ireen Ahmed, MDBoston, MA1548674807
- Mary Ahn, M.D.Boston, MA1952429532
Common questions
What is Chelsea Rachael Cosner's NPI number?
Chelsea Rachael Cosner's National Provider Identifier (NPI) is 1003393380, issued on Jul 19, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Chelsea Rachael Cosner located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 724-5600. Providers update this record themselves, so call before visiting.
How can I verify Chelsea Rachael Cosner's license?
NPPES lists Massachusetts license number 1018908, 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.
What is Chelsea Rachael Cosner's MIPS final score?
The 2023 MIPS final score is 84.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.