Zachary Kassir
- Part D claims, 2024
- 345
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Year NPI issued
- 2022
- Practice address
- 330 Brookline Avenue, Boston, MA 02215
- Practice phone
- Call (617) 667-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Zachary Kassir'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.
Zachary Kassir is an internist in Boston, Massachusetts
Zachary Kassir practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health.
Zachary Kassir's NPI, 1346971546, was assigned on June 20, 2022. Zachary Kassir graduated from University of Pittsburgh School of Medicine in 2022. Zachary Kassir holds Massachusetts license 1024498.
- NPI
- 1346971546NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002296464
- NPI enumeration date
- June 20, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 667-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Zachary Kassir practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts
Zachary Kassir's primary practice is Beth Israel Deaconess Medical Center, at 330 Brookline Avenue, Boston, MA 02215 in Suffolk County. The practice phone is (617) 667-7000.
- Beth Israel Deaconess Medical Center330 Brookline Avenue, Boston, MA 02215 · Suffolk CountyPhone(617) 667-7000
Source: Dmand AI Affiliation Data
Zachary Kassir is affiliated with 1 site of care and 2 medical groups
Zachary Kassir's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health. The medical group on file is Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI also links Zachary Kassir to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Zachary Kassir's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Zachary Kassir practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Beth Israel Deaconess Medical Center | Available with a free account |
| +1 medical group | 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 Beth Israel Lahey Health and 6.2K+ hospitals, with verified contacts in the same login.
Zachary Kassir is one of 5,528 internists in Massachusetts
Internal medicine is Zachary Kassir's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Zachary Kassir is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Zachary Kassir
Counts of internists 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
Zachary Kassir's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Zachary Kassir's median patient age at 70, with 43% women.
Zachary Kassir's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women43%
- Men54%
Source: Dmand AI Patient Panel Data
Zachary Kassir wrote 345 Medicare Part D claims in 2024
In 2024, Zachary Kassir wrote 345 Medicare Part D claims for 78 patients. 86% of them were for generic drugs. CMS names the drug for 108 of them, across 7 drugs with 11 or more claims each, at $807 in total drug cost.
Zachary Kassir's Part D claims by kind of drug, 2024
- Generic298 claims86%
- Brand-name and other47 claims14%
Zachary Kassir'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.
Drug classes CMS tracks in Zachary Kassir's Part D claims, 2024
- Opioids3%11 of 345 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How Zachary Kassir takes part in Medicare
Zachary Kassir accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Zachary Kassir graduated from University of Pittsburgh School of Medicine
Zachary Kassir graduated from University of Pittsburgh School of Medicine in 2022.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Zachary Kassir'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) |
| 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 Zachary Kassir
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Zachary Kassir's NPI number?
Zachary Kassir's NPI number is 1346971546. It was assigned on June 20, 2022, and it is active in the NPI Registry.
What does Zachary Kassir specialize in?
Zachary Kassir is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Zachary Kassir practice?
Zachary Kassir practices at 330 Brookline Avenue, Boston, MA 02215. Zachary Kassir's primary practice is Beth Israel Deaconess Medical Center in Boston, Massachusetts, part of Beth Israel Lahey Health. Dmand AI also links Zachary Kassir to 1 medical group.
What is Zachary Kassir's office phone number?
The practice phone on file for Zachary Kassir is (617) 667-7000.
What is Zachary Kassir's medical license number?
Zachary Kassir holds Massachusetts license 1024498.
Which hospitals is Zachary Kassir affiliated with?
Zachary Kassir practices at Beth Israel Deaconess Medical Center in Boston, Massachusetts.
What medical group is Zachary Kassir part of?
Zachary Kassir is linked to Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP). Dmand AI links Zachary Kassir to 1 more medical group.
Does Zachary Kassir accept Medicare?
Yes. CMS lists Zachary Kassir as accepting Medicare assignment.
Where did Zachary Kassir go to medical school?
Zachary Kassir graduated from University of Pittsburgh School of Medicine in 2022.
What drugs does Zachary Kassir prescribe most?
In 2024 Medicare Part D data, Zachary Kassir's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Lisinopril.
How long has Zachary Kassir been practicing?
Zachary Kassir graduated from medical school in 2022, 4 years ago.
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