Joshua Ryan Leo, M.D., M.P.H.
Psychiatry Physician · Brookline, MA
Joshua Ryan Leo, M.D., M.P.H. is a psychiatry physician with a practice address in Brookline, Massachusetts, and NPI 1376785022, issued on Mar 26, 2009. Check the license (Massachusetts 249733, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Joshua Ryan Leo
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 249733 MA
Self-reported in NPPES; status is on the state search - Practice location
- 111 Cypress St, Brookline, MA 02445
- Phone
- (617) 582-1191
- Enumerated
- Mar 26, 2009
- Record last updated
- Apr 20, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (617) 582-1175
- Medicare enrollment
- Enrolled (PECOS I20140618000085); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Also registered at 111 Cypress St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joshua Ryan Leo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 249733Check 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
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joshua Ryan Leo among 2,736 psychiatry physician records in Massachusetts
Joshua Ryan Leo, M.D., M.P.H. is one of 2,736 psychiatry physician records with a practice address in Massachusetts. 65% 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 66% of them.
- NPI issued2009 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2009 · median 2005 among the 1,219 with a school on file
- Record last updated2014 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
117 psychiatry physician records list a practice address in Brookline
They are 117 of the 2,357 NPPES records with a practice address in Brookline, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Brookline → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Michele Baker, M.D.Brookline, MA 024451871544379
- Ellen Blumenthal, MDBrookline, MA 024451770552861
- Ethel Bullitt, M.D.Brookline, MA 024451700833183
- Eugene Cacciola, M.D.Brookline, MA 024451881682466
- Eugene Fierman, M.D.Brookline, MA 024451366429839
- Linda Gross, M.D.Brookline, MA 024451588603674
- Hilary Hoge, M.D.Brookline, MA 024451023000841
- Jonathan Kolb, MDBrookline, MA 024451821088394
Common questions
What is Joshua Ryan Leo, M.D., M.P.H.'s NPI number?
Joshua Ryan Leo, M.D., M.P.H.'s National Provider Identifier (NPI) is 1376785022, issued on Mar 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Joshua Ryan Leo, M.D., M.P.H. located?
The NPPES record lists a practice address at 111 Cypress St, Brookline, MA, 02445. Phone: (617) 582-1191. Providers update this record themselves, so call before visiting.
How can I verify Joshua Ryan Leo, M.D., M.P.H.'s license?
NPPES lists Massachusetts license number 249733, 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.
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.