NPPES file of Aug 9, 2026

Andrew D. Gill, M.D.

Psychiatry Physician · Ashburham, MA

Andrew D. Gill, M.D. is a psychiatry physician with a practice address in Ashburham, Massachusetts, and NPI 1558445825, issued on Oct 24, 2006. Check the license (Massachusetts 36633, 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
1558445825
Name
Andrew D. Gill
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
36633 MA
Self-reported in NPPES; status is on the state search
Practice location
Mclean Hospital @ Naukeag, Ashburham, MA 01430
Phone
(978) 827-5115
Enumerated
Oct 24, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20081106000223); may accept Medicare assignment
Medical or professional school
Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University, 1972
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.
Download card Updates feed

Verify Andrew D. Gill 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 36633
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

85% fewer Medicare Part D claims than the average psychiatry physician in 2024

149 Medicare Part D claims for 15 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Andrew Gill149
  2. Specialty average1,000

Most prescribed

  1. Clonazepam21 claims
  2. Buprenorphine-Naloxone17 claims
  3. Dextroamphetamine-Amphetamine13 claims
  4. Lorazepam13 claims
  5. Bupropion Xl11 claims
  6. Lithium Carbonate11 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.

Andrew D. Gill among 2,736 psychiatry physician records in Massachusetts

Andrew D. Gill, 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 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 51% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 45% of these records are
  • Graduated1972 · median 2005 among the 1,219 with a school on file
  • 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).

Psychiatry Physician providers in Massachusetts

There are 2,736 psychiatry physician records in Massachusetts.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Jean Mesquita Mello, MDDevens, MA 014341053763730
  2. Amy Taylor, M.D.Ayer, MA 014341841277357
  3. Wendy Barry, CNPFitchburg, MA 014201124674213
  4. Nuzhat FarooquiGardner, MA 014401689772907
  5. David Gill, M.D.Gardner, MA 014401316933294
  6. Karen Leblanc, MDFitchburg, MA 014201770781130
  7. Cory Nohl, M.D.Gardner, MA 014401184880569
  8. Terry Osborne, D.O.Fitchburg, MA 014201811194913

Common questions

What is Andrew D. Gill, M.D.'s NPI number?

Andrew D. Gill, M.D.'s National Provider Identifier (NPI) is 1558445825, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Andrew D. Gill, M.D. located?

The NPPES record lists a practice address at Mclean Hospital @ Naukeag, Ashburham, MA, 01430. Phone: (978) 827-5115. Providers update this record themselves, so call before visiting.

How can I verify Andrew D. Gill, M.D.'s license?

NPPES lists Massachusetts license number 36633, 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 Andrew D. Gill, M.D. prescribe under Medicare Part D?

In 2024, Andrew D. Gill, M.D. had 149 Medicare Part D claims for 15 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), 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.