Dr. Ian Gerard Johnson, MD
- Medicare patients, 2024
- 17
- Part D claims, 2024
- 261
- Hospital affiliations
- 3
- Medical groups
- 3
- State license
- 1
- Practice address
- 1153 Centre Street, Jamaica Plain, MA 02130
- Practice phone
- Call (617) 983-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ian Gerard Johnson is an addiction psychiatry physician in Jamaica Plain, Massachusetts
Dr. Johnson practices at Brigham and Women's Faulkner Hospital in Jamaica Plain, Massachusetts, part of Mass General Brigham.
Dr. Johnson's NPI, 1942763115, was assigned on April 12, 2019. Dr. Johnson graduated from George Washington University School of Medicine in 2019. Dr. Johnson holds Massachusetts license 1015490.
- NPI
- 1942763115NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274079561
- NPI enumeration date
- April 12, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 983-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ian Gerard Johnson practices at Brigham and Women's Faulkner Hospital in Jamaica Plain, Massachusetts
Dr. Johnson's primary practice is Brigham and Women's Faulkner Hospital, at 1153 Centre Street, Jamaica Plain, MA 02130 in Suffolk County. The practice phone is (617) 983-7000.
- Brigham and Women's Faulkner Hospital1153 Centre Street, Jamaica Plain, MA 02130 · Suffolk CountyPhone(617) 983-7000
Source: Dmand AI Affiliation Data
Dr. Ian Gerard Johnson is affiliated with 4 sites of care and 3 medical groups
Dr. Johnson's primary practice is Brigham and Women's Faulkner Hospital in Jamaica Plain, Massachusetts, part of Mass General Brigham. Dr. Johnson is also affiliated with Brigham and Women's Hospital. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Dr. Johnson to 1 more hospital, 2 medical groups and 1 hospital outpatient department, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ian Gerard Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brigham and Women's Faulkner Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Ian Gerard Johnson is one of 28 addiction psychiatry physicians in Massachusetts
Addiction psychiatry is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 2084P0802X. Dr. Johnson is licensed in Massachusetts.
Specialties and state licenses
- Addiction psychiatry, MassachusettsPrimary
Addiction psychiatry physicians near Dr. Johnson
Counts of addiction psychiatry physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ian Gerard Johnson treated 17 Medicare patients in 2024, average age 64
CMS counts 17 Medicare patients who saw Dr. Johnson in 2024. The largest group is 85 and over, with 0 patients. 75% of them have anxiety, and 75% have depression. Their average risk score is 1.30, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 60, with 41% women.
Dr. Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Johnson's Medicare patients, 2024
- Anxiety75%
- Depression75%
- Mood disorders75%
- Alcohol and drug use disorders71%
Share of Medicare patients with each condition. A patient can have several.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women41%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ian Gerard Johnson wrote 261 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 261 Medicare Part D claims for 33 patients. 97% of them were for generic drugs. CMS names the drug for 140 of them, across 6 drugs with 11 or more claims each, at $7,429 in total drug cost. In 2022, CMS named 87 claims across 6 drugs.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic253 claims97%
- Brand-name and other8 claims3%
Dr. Johnson's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 872024: 14061%
Drugs named by CMS: 6 in 2024, 6 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ian Gerard Johnson offers telehealth to Medicare patients
Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johnson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ian Gerard Johnson graduated from George Washington University School of Medicine
Dr. Johnson graduated from George Washington University School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ian Gerard Johnson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ian Gerard Johnson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ian Gerard Johnson's NPI number?
Dr. Ian Gerard Johnson's NPI number is 1942763115. It was assigned on April 12, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Ian Gerard Johnson?
Dr. Ian Gerard Johnson is an addiction psychiatry physician in Jamaica Plain, Massachusetts. The primary specialty in the NPI Registry is Addiction Psychiatry Physician (taxonomy code 2084P0802X).
Where does Dr. Ian Gerard Johnson practice?
Dr. Johnson practices at 1153 Centre Street, Jamaica Plain, MA 02130. Dr. Johnson's primary practice is Brigham and Women's Faulkner Hospital in Jamaica Plain, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Johnson to 1 hospital, 2 medical groups and 1 hospital outpatient department.
What is Dr. Ian Gerard Johnson's office phone number?
The practice phone on file for Dr. Johnson is (617) 983-7000.
What is Dr. Ian Gerard Johnson's medical license number?
Dr. Johnson holds Massachusetts license 1015490.
Which hospitals is Dr. Ian Gerard Johnson affiliated with?
Dr. Johnson practices at Brigham and Women's Faulkner Hospital in Jamaica Plain, Massachusetts. Dr. Johnson is also affiliated with Brigham and Women's Hospital. Dmand AI links Dr. Johnson to 1 more hospital.
What medical group is Dr. Ian Gerard Johnson part of?
Dr. Johnson is linked to Brigham and Women's Hospital. Dmand AI links Dr. Johnson to 2 more medical groups.
Does Dr. Ian Gerard Johnson accept Medicare?
Yes. CMS lists Dr. Johnson as accepting Medicare assignment.
Does Dr. Ian Gerard Johnson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Johnson as offering telehealth services.
How many Medicare patients does Dr. Ian Gerard Johnson see?
CMS counts 17 Medicare patients who saw Dr. Johnson in 2024, with an average age of 64.
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Where did Dr. Ian Gerard Johnson go to medical school?
Dr. Johnson graduated from George Washington University School of Medicine in 2019.
What drugs does Dr. Ian Gerard Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Buprenorphine-Naloxone, Gabapentin and Fluoxetine HCl.
How long has Dr. Ian Gerard Johnson been practicing?
Dr. Johnson graduated from medical school in 2019, 7 years ago.
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