Dr. Diana Y. Yoon-Schwartz, MD, PhD
- Part D claims, 2024
- 48
- Hospital affiliations
- 1
- Industry payments
- $12,760
- State license
- 1
- Year NPI issued
- 2008
- Practice address
- 50 Route 25A, Smithtown, NY 11787
- Practice phone
- Call (631) 862-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Yoon-Schwartz'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. Diana Y. Yoon-Schwartz is a plastic and reconstructive surgery physician in Smithtown, New York
Dr. Yoon-Schwartz practices at St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre.
Dr. Yoon-Schwartz's NPI, 1306003405, was assigned on May 18, 2008. Dr. Yoon-Schwartz graduated from New York University School of Medicine in 1998. Dr. Yoon-Schwartz holds New York license 243261.
- NPI
- 1306003405NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244306348
- NPI enumeration date
- May 18, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (631) 862-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Diana Y. Yoon-Schwartz practices at St. Catherine of Siena Hospital in Smithtown, New York
Dr. Yoon-Schwartz's primary practice is St. Catherine of Siena Hospital, at 50 Route 25A, Smithtown, NY 11787 in Suffolk County. The practice phone is (631) 862-3000.
- St. Catherine of Siena Hospital50 Route 25A, Smithtown, NY 11787 · Suffolk CountyPhone(631) 862-3000
Source: Dmand AI Affiliation Data
Dr. Diana Y. Yoon-Schwartz is affiliated with 2 sites of care
Dr. Yoon-Schwartz's primary practice is St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre. Dmand AI also links Dr. Yoon-Schwartz to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Diana Y. Yoon-Schwartz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yoon-Schwartz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Catherine of Siena 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 Diocese of Rockville Centre and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Diana Y. Yoon-Schwartz is one of 161 plastics and reconstructive surgery physicians in New York
Plastic and reconstructive surgery is Dr. Yoon-Schwartz's primary specialty in the NPI Registry, under taxonomy code 2086S0122X. Dr. Yoon-Schwartz is licensed in New York.
Specialties and state licenses
- Plastic and reconstructive surgery, New YorkPrimary
Plastics and reconstructive surgery physicians near Dr. Yoon-Schwartz
Counts of plastics and reconstructive surgery 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. Diana Y. Yoon-Schwartz's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Yoon-Schwartz's median patient age at 56, with 91% women.
Dr. Yoon-Schwartz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women91%
- Men4%
Source: Dmand AI Patient Panel Data
Dr. Diana Y. Yoon-Schwartz wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Yoon-Schwartz wrote 48 Medicare Part D claims for 12 patients. 88% of them were for generic drugs. CMS names the drug for 30 of them, across 2 drugs with 11 or more claims each, at $310 in total drug cost. In 2021, CMS named 17 claims across 1 drug.
Dr. Yoon-Schwartz's Part D claims by kind of drug, 2024
- Generic42 claims88%
- Brand-name and other6 claims13%
Dr. Yoon-Schwartz's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 172022: 3076%
Drugs named by CMS: 2 in 2022, 1 in 2021.
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 Dr. Diana Y. Yoon-Schwartz takes part in Medicare
Dr. Yoon-Schwartz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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.
Dr. Diana Y. Yoon-Schwartz received $12,760 in industry payments from 2016 to 2025
CMS Open Payments shows 124 general payments to Dr. Yoon-Schwartz from 18 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 66% of the total. Sientra, Inc. paid the most, $7,302.
General payments to Dr. Yoon-Schwartz by program year, 2016 to 2025
General payments to Dr. Yoon-Schwartz by kind, 2016 to 2025
- Food and beverage$8,45466%
- Consulting fees$2,92323%
- Travel and lodging$8837%
- Honoraria$5004%
Companies that paid Dr. Yoon-Schwartz the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Diana Y. Yoon-Schwartz graduated from New York University School of Medicine
Dr. Yoon-Schwartz graduated from New York University School of Medicine in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Diana Y. Yoon-Schwartz'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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. Diana Y. Yoon-Schwartz
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. Diana Y. Yoon-Schwartz's NPI number?
Dr. Diana Y. Yoon-Schwartz's NPI number is 1306003405. It was assigned on May 18, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Diana Y. Yoon-Schwartz?
Dr. Diana Y. Yoon-Schwartz is a plastic and reconstructive surgery physician in Smithtown, New York. The primary specialty in the NPI Registry is Plastic and Reconstructive Surgery Physician (taxonomy code 2086S0122X).
Where does Dr. Diana Y. Yoon-Schwartz practice?
Dr. Yoon-Schwartz practices at 50 Route 25A, Smithtown, NY 11787. Dr. Yoon-Schwartz's primary practice is St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre. Dmand AI also links Dr. Yoon-Schwartz to 1 physician office.
What is Dr. Diana Y. Yoon-Schwartz's office phone number?
The practice phone on file for Dr. Yoon-Schwartz is (631) 862-3000.
What is Dr. Diana Y. Yoon-Schwartz's medical license number?
Dr. Yoon-Schwartz holds New York license 243261.
Which hospitals is Dr. Diana Y. Yoon-Schwartz affiliated with?
Dr. Yoon-Schwartz practices at St. Catherine of Siena Hospital in Smithtown, New York.
Does Dr. Diana Y. Yoon-Schwartz accept Medicare?
Yes. CMS lists Dr. Yoon-Schwartz as accepting Medicare assignment.
Where did Dr. Diana Y. Yoon-Schwartz go to medical school?
Dr. Yoon-Schwartz graduated from New York University School of Medicine in 1998.
What drugs does Dr. Diana Y. Yoon-Schwartz prescribe most?
In 2022 Medicare Part D data, Dr. Yoon-Schwartz's most prescribed drugs by claims were Mupirocin and Cephalexin.
Has Dr. Diana Y. Yoon-Schwartz received payments from drug or device companies?
CMS Open Payments shows $12,760 in general payments to Dr. Yoon-Schwartz from 18 companies from 2016 to 2025. The largest total came from Sientra, Inc.
How long has Dr. Diana Y. Yoon-Schwartz been practicing?
Dr. Yoon-Schwartz graduated from medical school in 1998, 28 years ago.
Selling to plastic and reconstructive surgery practices?
See plastics and reconstructive surgery physicians in New York by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card