Ian Gerard Johnson, MD
Addiction Psychiatry Physician · Jamaica Plain, MA
Ian Gerard Johnson, MD is an addiction psychiatry physician with a practice address in Jamaica Plain, Massachusetts, and NPI 1942763115, issued on Apr 12, 2019. Check the license (Massachusetts 1015490, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ian Gerard Johnson
- Credential
- MD
- Primary taxonomy
- Addiction Psychiatry Physician 2084P0802X
- License number
- 1015490 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1153 Centre St, Jamaica Plain, MA 02130
- Phone
- (617) 983-7474
- Enumerated
- Apr 12, 2019
- Record last updated
- Jul 8, 2024
- Medicare enrollment
- Enrolled (PECOS I20240723002164); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest addiction psychiatry physician records → All 33 in Massachusetts → Look up another NPI →
Also registered at 1153 Centre St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Bachman, M.D.Cardiovascular Disease Physician1861452898
- Eva Balash, MDDermatology Physician1952405045
- Dhirendra Bana, M.D.Internal Medicine Physician1639134323
- Joseph Barr, MDOrthopaedic Surgery Physician1770564916
- Gary Brockington, MDSpecialist1376538983
- William BromstedtClinical Social Worker1649786559
Verify Ian Gerard Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1015490Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average addiction psychiatry physician in 2024
261 Medicare Part D claims for 33 beneficiaries, against an average of 716 among the 421 providers of this specialty who prescribed in Part D.
Most prescribed
- Buprenorphine-Naloxone35 claims
- Gabapentin33 claims
- Fluoxetine Hcl20 claims
- Dextroamphetamine-Amphetamine19 claims
- Escitalopram Oxalate17 claims
- Buprenorphine Hcl16 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
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian Gerard Johnson among 33 addiction psychiatry physician records in Massachusetts
Ian Gerard Johnson, MD is one of 33 addiction psychiatry physician records with a practice address in Massachusetts. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 88% of them.
- NPI issued2019 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated2019 · median 1999 among the 18 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0802X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Psychiatry Physician providers in Massachusetts
There are 33 addiction psychiatry physician records in Massachusetts.
All 33 in Massachusetts → Every provider in Jamaica Plain → Addiction Psychiatry Physician nationwide →
The 8 addiction psychiatry physician records with the nearest ZIP codes
- Laurence Ducomb, MDJamaica Plain, MA 021301497734768
- Juan Condemarin, MDBrighton, MA 021351083894059
- Jose Dominguez, MD, MPHCambridge, MA 021391821676156
- David Mann, M.D.Cambridge, MA 021391427047398
- Tauheed ZamanCambridge, MA 021391740505312
- William-Bernard Reid-Varley, M.D.Boston, MA 021181205290228
- Mark Albanese, M.D.Somerville, MA 021431366475675
- Gregory Acampora, M.D.Boston, MA 021141255431177
Common questions
What is Ian Gerard Johnson, MD's NPI number?
Ian Gerard Johnson, MD's National Provider Identifier (NPI) is 1942763115, issued on Apr 12, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ian Gerard Johnson, MD located?
The NPPES record lists a practice address at 1153 Centre St, Jamaica Plain, MA, 02130. Phone: (617) 983-7474. Providers update this record themselves, so call before visiting.
How can I verify Ian Gerard Johnson, MD's license?
NPPES lists Massachusetts license number 1015490, 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 Ian Gerard Johnson, MD prescribe under Medicare Part D?
In 2024, Ian Gerard Johnson, MD had 261 Medicare Part D claims for 33 beneficiaries; the average among addiction psychiatry physician prescribers was 716. 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.