Dr. Linden Joy Cassidy, MD
- Part D claims, 2024
- 50
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Cassidy'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. Linden Joy Cassidy is a psychiatrist in Boston, Massachusetts
Dr. Cassidy practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Cassidy's NPI, 1891769519, was assigned on February 17, 2006. Dr. Cassidy holds Massachusetts license 78703.
- NPI
- 1891769519NPI Registry (opens in a new tab)
- NPI enumeration date
- February 17, 2006
- NPI status
- Active
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Linden Joy Cassidy practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Cassidy's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Linden Joy Cassidy is affiliated with 2 sites of care
Dr. Cassidy's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Cassidy to 1 community health center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Linden Joy Cassidy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cassidy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Linden Joy Cassidy is one of 1,857 psychiatrists in Massachusetts
Psychiatry is Dr. Cassidy's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Cassidy is licensed in Massachusetts.
Specialties and state licenses
- Psychiatry, MassachusettsPrimary
Psychiatrists near Dr. Cassidy
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. Linden Joy Cassidy's patients have a median age of 23
Across all payers, Dmand AI patient panel data puts Dr. Cassidy's median patient age at 23, with 100% women.
Dr. Cassidy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 23
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Linden Joy Cassidy wrote 50 Medicare Part D claims in 2024
In 2024, Dr. Cassidy wrote 50 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 23 of them, across 2 drugs with 11 or more claims each, at $914 in total drug cost. In 2023, CMS named 11 claims across 1 drug.
Dr. Cassidy'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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 112024: 23109%
Drugs named by CMS: 2 in 2024, 1 in 2023.
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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Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Dr. Linden Joy Cassidy'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 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) |
| 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. Linden Joy Cassidy
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. Linden Joy Cassidy's NPI number?
Dr. Linden Joy Cassidy's NPI number is 1891769519. It was assigned on February 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Linden Joy Cassidy?
Dr. Linden Joy Cassidy is a psychiatrist in Boston, Massachusetts. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Linden Joy Cassidy practice?
Dr. Cassidy practices at 55 Fruit Street, Boston, MA 02114. Dr. Cassidy's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Cassidy to 1 community health center.
What is Dr. Linden Joy Cassidy's office phone number?
The practice phone on file for Dr. Cassidy is (617) 726-2000.
What is Dr. Linden Joy Cassidy's medical license number?
Dr. Cassidy holds Massachusetts license 78703.
Which hospitals is Dr. Linden Joy Cassidy affiliated with?
Dr. Cassidy practices at Massachusetts General Hospital in Boston, Massachusetts.
What drugs does Dr. Linden Joy Cassidy prescribe most?
In 2024 Medicare Part D data, Dr. Cassidy's most prescribed drugs by claims were Bupropion XL and Dextroamphetamine-Amphetamine.
How long has Dr. Linden Joy Cassidy been practicing?
Dr. Cassidy's NPI was assigned in 2006.
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