Ivan Chavarria-Siles, M.D.
Psychiatry Physician · Greenfield, MA
Ivan Chavarria-Siles, M.D. is a psychiatry physician with a practice address in Greenfield, Massachusetts, and NPI 1316212780, issued on Mar 18, 2012. Check the license (Massachusetts 266061, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ivan Chavarria-Siles
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 266061 MA
281523 NY
Self-reported in NPPES; status is on the state search - Practice location
- 164 High Street, Greenfield, MA 01301
- Phone
- (413) 773-2595
- Enumerated
- Mar 18, 2012
- Entity
- Type 1 · individual
Also registered at 164 High Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Fyler, MDPsychiatry Physician1538194089
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- Cynthia Lodding, MDEmergency Medicine Physician1346456688
- Aiswerya Madanam Sampath, MDInternal Medicine Physician1770848657
- Jose Rivadeneira Argudo, MDInternal Medicine Physician1952821647
Verify Ivan Chavarria-Siles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 266061Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
85% fewer Medicare Part D claims than the average psychiatry physician in 2024
153 Medicare Part D claims for 29 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Trazodone Hcl12 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.
Bills Medicare through one group practice
- Baystate Medical Practices IncGreenfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Psychiatry Physician providers in Massachusetts
There are 2,736 psychiatry physician records in Massachusetts.
Other psychiatry physician records in Massachusetts
- Karen Abdool, M.D., PH.DLynn, MA1942472824
- Harmony Abejuela, M.D.Quincy, MA1316259492
- Marielle Abell, PAAmherst, MA1275644072
- Steven Ablon, MDBoston, MA1083604839
- Keith Ablow, M.D.Newbury, MA1245423615
- Yousef Abou-Allaban, MDWalpole, MA1922040666
- Habiba Abozeid, MDBoston, MA1689408346
- Margarita Abramovich, MDPittsfield, MA1154883239
- Howard Abrams, MDSalem, MA1821102773
- David Abramson, MDCambridge, MA1376679787
Common questions
What is Ivan Chavarria-Siles, M.D.'s NPI number?
Ivan Chavarria-Siles, M.D.'s National Provider Identifier (NPI) is 1316212780, issued on Mar 18, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Ivan Chavarria-Siles, M.D. located?
The NPPES record lists a practice address at 164 High Street, Greenfield, MA, 01301. Phone: (413) 773-2595. Providers update this record themselves, so call before visiting.
How can I verify Ivan Chavarria-Siles, M.D.'s license?
NPPES lists Massachusetts license number 266061, 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 Ivan Chavarria-Siles, M.D. prescribe under Medicare Part D?
In 2024, Ivan Chavarria-Siles, M.D. had 153 Medicare Part D claims for 29 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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 27, 2026.