Siamak Tadayon, PA-C
- Medicare services, 2024
- 24
- Medicare patients, 2024
- 25
- Part D claims, 2024
- 124
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 1901 First Avenue, New York, NY 10029
- Practice phone
- Call (212) 423-6262
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Siamak Tadayon's professional email, personal email and mobile number
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Siamak Tadayon is a surgical physician assistant in New York, New York
Siamak Tadayon practices at NYC Health + Hospitals/Metropolitan in New York, New York, part of NYC.
Siamak Tadayon's NPI, 1366596272, was assigned on January 22, 2007. Siamak Tadayon holds New York license 008794-1.
- NPI
- 1366596272NPI Registry (opens in a new tab)
- NPI enumeration date
- January 22, 2007
- NPI status
- Active
- Practice phone
- (212) 423-6262
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Siamak Tadayon practices at NYC Health + Hospitals/Metropolitan in New York, New York
Siamak Tadayon's primary practice is NYC Health + Hospitals/Metropolitan, at 1901 First Avenue, New York, NY 10029 in New York County. The practice phone is (212) 423-6262.
- NYC Health + Hospitals/Metropolitan1901 First Avenue, New York, NY 10029 · New York CountyPhone(212) 423-6262
Source: Dmand AI Affiliation Data
Siamak Tadayon is affiliated with 2 sites of care and 2 medical groups
Siamak Tadayon's primary practice is NYC Health + Hospitals/Metropolitan in New York, New York, part of NYC. The medical group on file is Physician Affiliate Group of New York (PAGNY). Dmand AI also links Siamak Tadayon to 1 more breast imaging center and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Siamak Tadayon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Siamak Tadayon practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NYC Health + Hospitals/Metropolitan | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Siamak Tadayon is one of 1,635 surgical physician assistants in New York
Surgical is Siamak Tadayon's primary specialty in the NPI Registry, under taxonomy code 363AS0400X. Siamak Tadayon is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Siamak Tadayon is licensed in New York.
Specialties and state licenses
- Surgical physician assistant, New YorkPrimary
Surgical physician assistants near Siamak Tadayon
Counts of surgical 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
Siamak Tadayon billed Medicare for 24 services in 2024
CMS data shows 24 Medicare services from Siamak Tadayon across 1 procedure code in 2024, for 25 Medicare patients. Medicare paid $1,162 for them. Every service was in a facility, such as a hospital, rather than an office.
Siamak Tadayon compared with the New York median for surgical physician assistants, 2024
- Siamak Tadayon
- New York median
- Medicare services
- 24vs 11779% below
- Medicare patients
- 25vs 5151% below
- Part D claims
- 30vs 11073% below
Medians across 1,072 surgical physician assistants in New York with Dmand AI profiles that report each measure.
Siamak Tadayon's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Siamak Tadayon and other surgical physician assistants in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Siamak Tadayon treated 25 Medicare patients in 2024, average age 65
CMS counts 25 Medicare patients who saw Siamak Tadayon in 2024. The largest group is 65 to 74, with 13 patients. 68% of them have high blood pressure, and 56% have high cholesterol. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Siamak Tadayon's median patient age at 42, with 48% women.
Siamak Tadayon's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Siamak Tadayon's Medicare patients, 2024
- High blood pressure68%
- High cholesterol56%
- Diabetes48%
Share of Medicare patients with each condition. A patient can have several.
Siamak Tadayon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 42
Patient panel by sex, all payers
- Women48%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Siamak Tadayon wrote 124 Medicare Part D claims in 2024
In 2024, Siamak Tadayon wrote 124 Medicare Part D claims for 87 patients. 95% of them were for generic drugs. CMS names the drug for 30 of them, across 1 drug with 11 or more claims each, at $26 in total drug cost.
Siamak Tadayon's Part D claims by kind of drug, 2024
- Generic118 claims95%
- Brand-name and other6 claims5%
Siamak Tadayon'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 Siamak Tadayon's Part D claims, 2024
- Antibiotics19%24 of 124 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
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Siamak Tadayon is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Siamak Tadayon'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (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 Siamak Tadayon
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Siamak Tadayon's NPI number?
Siamak Tadayon's NPI number is 1366596272. It was assigned on January 22, 2007, and it is active in the NPI Registry.
What does Siamak Tadayon specialize in?
Siamak Tadayon is a surgical physician assistant in New York, New York. The primary specialty in the NPI Registry is Surgical Physician Assistant (taxonomy code 363AS0400X).
Where does Siamak Tadayon practice?
Siamak Tadayon practices at 1901 First Avenue, New York, NY 10029. Siamak Tadayon's primary practice is NYC Health + Hospitals/Metropolitan in New York, New York, part of NYC. Dmand AI also links Siamak Tadayon to 1 breast imaging center and 1 medical group.
What is Siamak Tadayon's office phone number?
The practice phone on file for Siamak Tadayon is (212) 423-6262.
What is Siamak Tadayon's medical license number?
Siamak Tadayon holds New York license 008794-1.
Which hospitals is Siamak Tadayon affiliated with?
Siamak Tadayon practices at NYC Health + Hospitals/Metropolitan in New York, New York.
What medical group is Siamak Tadayon part of?
Siamak Tadayon is linked to Physician Affiliate Group of New York (PAGNY). Dmand AI links Siamak Tadayon to 1 more medical group.
Does Siamak Tadayon accept Medicare?
Yes. CMS data shows Siamak Tadayon billed Medicare for 24 services in 2024.
How many Medicare patients does Siamak Tadayon see?
CMS counts 25 Medicare patients who saw Siamak Tadayon in 2024, with an average age of 65.
Is Siamak Tadayon board certified?
Yes. Siamak Tadayon is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 3 more questionsShow fewer questions
What services does Siamak Tadayon bill to Medicare?
In 2024, Siamak Tadayon's most billed Medicare services were emergency department visit (99283).
What drugs does Siamak Tadayon prescribe most?
In 2024 Medicare Part D data, Siamak Tadayon's most prescribed drugs by claims were Ibuprofen.
How long has Siamak Tadayon been practicing?
Siamak Tadayon's NPI was assigned in 2007.
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