Dr. Simon Forbes Desjardins, MD
- Medicare services, 2022
- 183
- Part D claims, 2024
- 21
- Hospital affiliations
- 2
- Industry payments
- $282
- Medical groups
- 6
- Practice address
- 115 Mill Street, Belmont, MA 02478
- Practice phone
- Call (617) 855-3450
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Desjardins' 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. Simon Forbes Desjardins is a psychiatrist in Belmont, Massachusetts
Dr. Desjardins practices at McLean Hospital in Belmont, Massachusetts, part of Mass General Brigham.
Dr. Desjardins' NPI, 1821387580, was assigned on April 4, 2011. Dr. Desjardins holds Massachusetts license 281954.
- NPI
- 1821387580NPI Registry (opens in a new tab)
- NPI enumeration date
- April 4, 2011
- NPI status
- Active
- Practice phone
- (617) 855-3450
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Simon Forbes Desjardins practices at McLean Hospital in Belmont, Massachusetts
Dr. Desjardins' primary practice is McLean Hospital, at 115 Mill Street, Belmont, MA 02478 in Middlesex County. The practice phone is (617) 855-3450.
- McLean Hospital115 Mill Street, Belmont, MA 02478 · Middlesex CountyPhone(617) 855-3450
Source: Dmand AI Affiliation Data
Dr. Simon Forbes Desjardins is affiliated with 3 sites of care and 6 medical groups
Dr. Desjardins' primary practice is McLean Hospital in Belmont, Massachusetts, part of Mass General Brigham. Dr. Desjardins is also affiliated with Sturdy Memorial Hospital. The medical group on file is McLean Hospital. Dmand AI also links Dr. Desjardins to 5 more medical groups and 1 group practice or clinic, 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. Simon Forbes Desjardins' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Desjardins practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McLean Hospital | Available with a free account |
| +2 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Simon Forbes Desjardins is one of 1,857 psychiatrists in Massachusetts
Psychiatry is Dr. Desjardins' primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dmand AI has Dr. Desjardins' licenses on file in 4 states: Massachusetts, California, New York and Rhode Island.
Specialties and state licenses
- Psychiatry, MassachusettsPrimary
- California license
- New York license
- Rhode Island license
Psychiatrists near Dr. Desjardins
Counts of psychiatrists 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. Simon Forbes Desjardins billed Medicare for 183 services in 2022
CMS data shows 183 Medicare services from Dr. Desjardins across 2 procedure codes in 2022. Medicare paid $10,971 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Desjardins' Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 912022: 183101%
Dr. Desjardins compared with the Massachusetts median for psychiatrists, 2022
- Dr. Desjardins
- Massachusetts median
- Medicare services
- 183vs 1726% above
- Part D claims
- 137vs 9249% above
Medians across 2,056 psychiatrists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Desjardins' most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Desjardins and other psychiatrists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Simon Forbes Desjardins' patients have a median age of 49
Across all payers, Dmand AI patient panel data puts Dr. Desjardins' median patient age at 49, with 17% women.
Dr. Desjardins' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women17%
- Men83%
Source: Dmand AI Patient Panel Data
Dr. Simon Forbes Desjardins wrote 21 Medicare Part D claims in 2024
In 2024, Dr. Desjardins wrote 21 Medicare Part D claims. 100% of them were for generic drugs. They cover 8 drugs, with $1,349 in total drug cost. In 2020, CMS named 274 claims across 11 drugs.
Dr. Desjardins' most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 2742021: 13750%
Drugs named by CMS: 8 in 2021, 11 in 2020.
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
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Dr. Simon Forbes Desjardins received $282 in industry payments from 2017 to 2019
CMS Open Payments shows 5 general payments to Dr. Desjardins from 3 drug and device companies from 2017 to 2019. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $133.
General payments to Dr. Desjardins by program year, 2017 to 2019
Companies that paid Dr. Desjardins the most, 2017 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Simon Forbes Desjardins'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Simon Forbes Desjardins
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. Simon Forbes Desjardins' NPI number?
Dr. Simon Forbes Desjardins' NPI number is 1821387580. It was assigned on April 4, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Simon Forbes Desjardins?
Dr. Simon Forbes Desjardins is a psychiatrist in Belmont, Massachusetts. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Simon Forbes Desjardins practice?
Dr. Desjardins practices at 115 Mill Street, Belmont, MA 02478. Dr. Desjardins' primary practice is McLean Hospital in Belmont, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Desjardins to 5 medical groups and 1 group practice or clinic.
What is Dr. Simon Forbes Desjardins' office phone number?
The practice phone on file for Dr. Desjardins is (617) 855-3450.
What is Dr. Simon Forbes Desjardins' medical license number?
Dr. Desjardins holds Massachusetts license 281954, one of the licenses on file in 4 states.
Which states has Dr. Simon Forbes Desjardins been licensed in?
Dmand AI has state licenses on file for Dr. Desjardins in Massachusetts, California, New York and Rhode Island.
Which hospitals is Dr. Simon Forbes Desjardins affiliated with?
Dr. Desjardins practices at McLean Hospital in Belmont, Massachusetts. Dr. Desjardins is also affiliated with Sturdy Memorial Hospital.
What medical group is Dr. Simon Forbes Desjardins part of?
Dr. Desjardins is linked to McLean Hospital. Dmand AI links Dr. Desjardins to 5 more medical groups.
Does Dr. Simon Forbes Desjardins accept Medicare?
Yes. CMS data shows Dr. Desjardins billed Medicare for 183 services in 2022.
What services does Dr. Simon Forbes Desjardins bill to Medicare?
In 2022, Dr. Desjardins' most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99239).
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What drugs does Dr. Simon Forbes Desjardins prescribe most?
In 2021 Medicare Part D data, Dr. Desjardins' most prescribed drugs by claims were Fluoxetine HCl, Sertraline HCl and Trazodone HCl.
Has Dr. Simon Forbes Desjardins received payments from drug or device companies?
CMS Open Payments shows $282 in general payments to Dr. Desjardins from 3 companies from 2017 to 2019. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Simon Forbes Desjardins been practicing?
Dr. Desjardins' NPI was assigned in 2011.
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