Richard M. Chasin, M.D.
Psychiatry Physician · Cambridge, MA
Richard M. Chasin, M.D. is a psychiatry physician with a practice address in Cambridge, Massachusetts, and NPI 1447304514, issued on Jan 23, 2007. Check the license (Massachusetts 27518, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Richard M. Chasin
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 27518 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Appleton St, Cambridge, MA 02138
- Phone
- (617) 547-5988
- Enumerated
- Jan 23, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,736 in Massachusetts → Look up another NPI →
Verify Richard M. Chasin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 27518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average psychiatry physician in 2024
75 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. 15 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen15 claims
- Sertraline Hcl15 claims
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.
Richard M. Chasin among 2,736 psychiatry physician records in Massachusetts
Richard M. Chasin, M.D. 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 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 37% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2007 · 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).
213 psychiatry physician records list a practice address in Cambridge
They are 213 of the 5,145 NPPES records with a practice address in Cambridge, and 2,736 psychiatry physician records in Massachusetts.
All 2,736 in Massachusetts → Every provider in Cambridge → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Hans Agrawal, M.D.Cambridge, MA 021381609833805
- Menekse Alpay, MDCambridge, MA 021381861476467
- Paul Cannistraro, M.D.Cambridge, MA 021381639165988
- Andrew Clark, MDCambridge, MA 021381720056047
- Joseph D'Afflitti, MDCambridge, MA 021381902859986
- Catherine Fullerton, MDCambridge, MA 021381427039601
- Susan Kattlove, MDCambridge, MA 021381144219783
- Kevin Majeres, MDCambridge, MA 021381659333714
Common questions
What is Richard M. Chasin, M.D.'s NPI number?
Richard M. Chasin, M.D.'s National Provider Identifier (NPI) is 1447304514, issued on Jan 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Richard M. Chasin, M.D. located?
The NPPES record lists a practice address at 2 Appleton St, Cambridge, MA, 02138. Phone: (617) 547-5988. Providers update this record themselves, so call before visiting.
How can I verify Richard M. Chasin, M.D.'s license?
NPPES lists Massachusetts license number 27518, 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 Richard M. Chasin, M.D. prescribe under Medicare Part D?
In 2024, Richard M. Chasin, M.D. had 75 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.