Stuart E. Chassen
- Part D claims, 2024
- 80
- Industry payments
- $23
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 3443 213th St, Bayside, NY 11361-1554
- Practice phone
- Call (718) 229-6600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Weiss&chassen
Dental practice · Bayside, New York
Find Stuart Chassen'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.
Stuart E. Chassen is an endodontist in Bayside, New York
Stuart Chassen practices at Weiss&chassen in Bayside, New York.
Stuart Chassen's NPI, 1326137555, was assigned on October 12, 2006. Stuart Chassen holds New York license 033951.
- NPI
- 1326137555NPI Registry (opens in a new tab)
- NPI enumeration date
- October 12, 2006
- NPI status
- Active
- Practice phone
- (718) 229-6600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Stuart E. Chassen practices at Weiss&chassen in Bayside, New York
Stuart Chassen's primary practice is Weiss&chassen, at 3443 213th St, Bayside, NY 11361-1554. The practice phone is (718) 229-6600.
- Weiss&chassen3443 213th St, Bayside, NY 11361-1554Phone(718) 229-6600
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Stuart E. Chassen is affiliated with 1 site of care and 1 medical group
Stuart Chassen's primary practice is Weiss&chassen in Bayside, New York. Dmand AI also links Stuart Chassen to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Stuart E. Chassen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Stuart Chassen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Weiss&chassen | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Stuart E. Chassen is one of 172 endodontists in New York
Endodontics is Stuart Chassen's primary specialty in the NPI Registry, under taxonomy code 1223E0200X. Stuart Chassen is licensed in New York.
Specialties and state licenses
- Endodontist, New YorkPrimary
Endodontists near Stuart Chassen
Counts of endodontists 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
Stuart E. Chassen's patients have a median age of 59
Across all payers, Dmand AI patient panel data puts Stuart Chassen's median patient age at 59, with 0% women.
Stuart Chassen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Stuart E. Chassen wrote 80 Medicare Part D claims in 2024
In 2024, Stuart Chassen wrote 80 Medicare Part D claims for 61 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Stuart Chassen's Part D claims, 2024
- Antibiotics89%71 of 80 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Stuart E. Chassen received $23 in industry payments in 2025
CMS Open Payments shows 1 general payment to Stuart Chassen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Dentsply Sirona Inc paid the most, $23.
Companies that paid Stuart Chassen the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Stuart E. Chassen'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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 Stuart E. Chassen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Stuart E. Chassen's NPI number?
Stuart E. Chassen's NPI number is 1326137555. It was assigned on October 12, 2006, and it is active in the NPI Registry.
What does Stuart E. Chassen specialize in?
Stuart E. Chassen is an endodontist in Bayside, New York. The primary specialty in the NPI Registry is Endodontist (taxonomy code 1223E0200X).
Where does Stuart E. Chassen practice?
Stuart Chassen practices at 3443 213th St, Bayside, NY 11361-1554. Stuart Chassen's primary practice is Weiss&chassen in Bayside, New York. Dmand AI also links Stuart Chassen to 1 medical group.
What is Stuart E. Chassen's office phone number?
The practice phone on file for Stuart Chassen is (718) 229-6600.
What is Stuart E. Chassen's medical license number?
Stuart Chassen holds New York license 033951.
Has Stuart E. Chassen received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Stuart Chassen from 1 company from 2025 to 2025. The largest total came from Dentsply Sirona Inc.
How long has Stuart E. Chassen been practicing?
Stuart Chassen's NPI was assigned in 2006.
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