Stephen Siu, PA-C
- Medicare patients, 2024
- 61
- Part D claims, 2024
- 108
- MIPS score, 2024
- 89
- Industry payments
- $363
- Affiliated sites
- 2
- Practice address
- 2432 Grand Concourse, Bronx, NY 10458
- Practice phone
- Call (516) 326-4160
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Advanced Dermatology
Bronx, New York
Find Stephen Siu's professional email, personal email and mobile number
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Stephen Siu is a physician assistant in Bronx, New York
Stephen Siu practices at Advanced Dermatology in Bronx, New York.
Stephen Siu's NPI, 1831732577, was assigned on October 25, 2019. Stephen Siu graduated from Stanford University School of Medicine in 2020. Stephen Siu holds New York license 032611-01.
- NPI
- 1831732577NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466864822
- NPI enumeration date
- October 25, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (516) 326-4160
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Stephen Siu practices at Advanced Dermatology in Bronx, New York
Stephen Siu's primary practice is Advanced Dermatology, at 2432 Grand Concourse, Bronx, NY 10458 in Bronx County. The practice phone is (516) 326-4160.
- Advanced Dermatology2432 Grand Concourse, Bronx, NY 10458 · Bronx CountyPhone(516) 326-4160
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Stephen Siu is affiliated with 3 sites of care and 2 medical groups
Stephen Siu's primary practice is Advanced Dermatology in Bronx, New York. The medical group on file is Advanced Dermatology, P.C. Dmand AI also links Stephen Siu to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Stephen Siu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Stephen Siu practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Advanced Dermatology | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Stephen Siu is one of 11,456 physician assistants in New York
Physician assistant is Stephen Siu's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Dmand AI has Stephen Siu's licenses on file in 2 states: New York and California.
Specialties and state licenses
- Physician assistant, New YorkPrimary
- California license
Physician assistants near Stephen Siu
Counts of physician assistants 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
Stephen Siu treated 61 Medicare patients in 2024, average age 76
CMS counts 61 Medicare patients who saw Stephen Siu in 2024. The largest group is 75 to 84, with 34 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 23% are also on Medicaid. Their average risk score is 1.98, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Stephen Siu's median patient age at 44, with 60% women.
Stephen Siu's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Stephen Siu's Medicare patients by sex, 2024
- Women2948%
- Men3252%
Chronic conditions among Stephen Siu's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Cancer41%
- Diabetes38%
- Ischemic heart disease36%
- Anxiety31%
- Arthritis31%
- Atrial fibrillation21%
Share of Medicare patients with each condition. A patient can have several.
Stephen Siu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 44
Patient panel by sex, all payers
- Women60%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Stephen Siu wrote 108 Medicare Part D claims in 2024
In 2024, Stephen Siu wrote 108 Medicare Part D claims for 57 patients. 80% of them were for generic drugs.
Stephen Siu's Part D claims by kind of drug, 2024
- Generic86 claims80%
- Brand-name and other22 claims20%
Drug classes CMS tracks in Stephen Siu's Part D claims, 2024
- Opioids29%31 of 108 claims
- Antibiotics10%11 of 108 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
Stephen Siu scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Stephen Siu for performance year 2024, reported as part of a group. Stephen Siu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Stephen Siu's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Stephen Siu received $363 in industry payments in 2025
CMS Open Payments shows 9 general payments to Stephen Siu from 7 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Galderma Laboratories, L.P. paid the most, $150.
Companies that paid Stephen Siu the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Stephen Siu graduated from Stanford University School of Medicine
Stephen Siu graduated from Stanford University School of Medicine in 2020.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Stephen Siu'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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)Clinician Public Reporting: Overall MIPS Performance (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 Stephen Siu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Stephen Siu's NPI number?
Stephen Siu's NPI number is 1831732577. It was assigned on October 25, 2019, and it is active in the NPI Registry.
What does Stephen Siu specialize in?
Stephen Siu is a physician assistant in Bronx, New York. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Stephen Siu practice?
Stephen Siu practices at 2432 Grand Concourse, Bronx, NY 10458. Stephen Siu's primary practice is Advanced Dermatology in Bronx, New York. Dmand AI also links Stephen Siu to 2 group practices and clinics and 1 medical group.
What is Stephen Siu's office phone number?
The practice phone on file for Stephen Siu is (516) 326-4160.
What is Stephen Siu's medical license number?
Stephen Siu holds New York license 032611-01, one of the licenses on file in 2 states.
Which states has Stephen Siu been licensed in?
Dmand AI has state licenses on file for Stephen Siu in New York and California.
What medical group is Stephen Siu part of?
Stephen Siu is linked to Advanced Dermatology, P.C. Dmand AI links Stephen Siu to 1 more medical group.
Does Stephen Siu accept Medicare?
Yes. CMS lists Stephen Siu as accepting Medicare assignment.
What is Stephen Siu's MIPS score?
Stephen Siu's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Stephen Siu see?
CMS counts 61 Medicare patients who saw Stephen Siu in 2024, with an average age of 76.
Show 3 more questionsShow fewer questions
Where did Stephen Siu go to medical school?
Stephen Siu graduated from Stanford University School of Medicine in 2020.
Has Stephen Siu received payments from drug or device companies?
CMS Open Payments shows $363 in general payments to Stephen Siu from 7 companies from 2025 to 2025. The largest total came from Galderma Laboratories, L.P.
How long has Stephen Siu been practicing?
Stephen Siu graduated from medical school in 2020, 6 years ago.
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