NPPES file of Aug 9, 2026

Diane Cecilia Greer, MD

Geriatric Psychiatry Physician · Chelsea, MA

Diane Cecilia Greer, MD is a geriatric psychiatry physician with a practice address in Chelsea, Massachusetts, and NPI 1225019151, issued on Nov 8, 2005. Check the license (Massachusetts 71019, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1225019151
Name
Diane Cecilia Greer
Credential
MD
Primary taxonomy
Geriatric Psychiatry Physician 2084P0805X
License number
71019 MA
Self-reported in NPPES; status is on the state search
Practice location
151 Everette Ave Chc, Chelsea, MA 02150
Phone
(617) 889-8515
Enumerated
Nov 8, 2005
Record last updated
Jul 13, 2026
Fax
(617) 889-8509
Medicare enrollment
Enrolled (PECOS I20051029000155); accepts Medicare assignment
Medical or professional school
University Of Pittsburgh School Of Medicine, 1987
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Diane Cecilia Greer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 71019
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

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39% more Medicare Part D claims than the average geriatric psychiatry physician in 2024

2,068 Medicare Part D claims for 181 beneficiaries, against an average of 1,485 among the 473 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.

  1. Diane Greer2,068
  2. Specialty average1,485

Most prescribed

  1. Clonazepam211 claims
  2. Trazodone Hcl174 claims
  3. Lorazepam136 claims
  4. Mirtazapine99 claims
  5. Gabapentin89 claims
  6. Quetiapine Fumarate85 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

  1. The General Hospital CorporationBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Diane Cecilia Greer among 45 geriatric psychiatry physician records in Massachusetts

Diane Cecilia Greer, MD is one of 45 geriatric psychiatry physician records with a practice address in Massachusetts. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 80% newer
  • In a Medicare fileYes · 60% of these records are
  • In the CMS Doctors and Clinicians fileYes · 42% of these records are
  • Graduated1987 · median 1990 among the 19 with a school on file
  • Record last updated2026 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0805X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Psychiatry Physician providers in Massachusetts

There are 45 geriatric psychiatry physician records in Massachusetts.

The 8 geriatric psychiatry physician records with the nearest ZIP codes

  1. Stephen Pinals, M.D.Everett, MA 021491184720898
  2. David Harnett, MDMedford, MA 021551417921925
  3. Lakshmi Mudunuri, M.D.Medford, MA 021551508847823
  4. Sally Thompson, MDSomerville, MA 021431760592489
  5. Jeffrey Friedman, M.D.Cambridge, MA 021391356308126
  6. Max Baranovsky, MDBrighton, MA 021351568455939
  7. David AdamowiczBoston, MA 021151154987857
  8. Caroline Bader, M.D.Boston, MA 021151538587589

Common questions

What is Diane Cecilia Greer, MD's NPI number?

Diane Cecilia Greer, MD's National Provider Identifier (NPI) is 1225019151, issued on Nov 8, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Diane Cecilia Greer, MD located?

The NPPES record lists a practice address at 151 Everette Ave Chc, Chelsea, MA, 02150. Phone: (617) 889-8515. Providers update this record themselves, so call before visiting.

How can I verify Diane Cecilia Greer, MD's license?

NPPES lists Massachusetts license number 71019, 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 Diane Cecilia Greer, MD prescribe under Medicare Part D?

In 2024, Diane Cecilia Greer, MD had 2,068 Medicare Part D claims for 181 beneficiaries; the average among geriatric psychiatry physician prescribers was 1,485. 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.