Dr. Gregory H. Sirounian, MD
- Medicare services, 2024
- 2,146
- Medicare patients, 2024
- 541
- Part D claims, 2024
- 155
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Practice address
- 650 1st Ave, New York, NY 10016
- Practice phone
- Call (212) 263-0001
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nyumc Radiology Associates
New York, New York
Find Dr. Sirounian'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. Gregory H. Sirounian is an orthopedic surgeon in New York, New York
Dr. Sirounian practices at Nyumc Radiology Associates in New York, New York.
Dr. Sirounian's NPI, 1558356063, was assigned on September 12, 2005. Dr. Sirounian graduated from Oregon Health Sciences University School of Medicine in 1996. Dr. Sirounian holds Arizona license 30048.
- NPI
- 1558356063NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052396702
- NPI enumeration date
- September 12, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 263-0001
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory H. Sirounian practices at Nyumc Radiology Associates in New York, New York
Dr. Sirounian's primary practice is Nyumc Radiology Associates, at 650 1st Ave, New York, NY 10016 in New York County. The practice phone is (212) 263-0001.
- Nyumc Radiology Associates650 1st Ave, New York, NY 10016 · New York CountyPhone(212) 263-0001
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory H. Sirounian is affiliated with 6 sites of care and 3 medical groups
Dr. Sirounian's primary practice is Nyumc Radiology Associates in New York, New York. Dr. Sirounian is also affiliated with Tisch Hospital. The medical group on file is NYU Langone Orthopedic Surgery Associates. Dmand AI also links Dr. Sirounian to 3 more group practices and clinics, 2 medical groups and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory H. Sirounian's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sirounian practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nyumc Radiology Associates | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory H. Sirounian is one of 1,151 orthopedic surgeons in New York
Orthopaedic surgery is Dr. Sirounian's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dmand AI has Dr. Sirounian's licenses on file in 2 states: Arizona and New York.
Specialties and state licenses
- Orthopaedic surgery, ArizonaPrimary
- Adult reconstructive orthopaedic surgery, New York
Orthopedic surgeons near Dr. Sirounian
Counts of orthopedic surgeons 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. Gregory H. Sirounian billed Medicare for 2,146 services in 2024
CMS data shows 2,146 Medicare services from Dr. Sirounian across 12 procedure codes in 2024, for 541 Medicare patients. Medicare paid $237,379 for them.
Dr. Sirounian's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7102024: 84419%
- Drugs given in the office
- 2023: 5302024: 73939%
- Surgery
- 2023: 3852024: 48125%
- Other services
- 2023: 622024: 8232%
Where Dr. Sirounian's Medicare services took place, 2024
- In an office2,05896%
- In a facility884%
Dr. Sirounian compared with the New York median for orthopedic surgeons, 2024
- Dr. Sirounian
- New York median
- Medicare services
- 2,146vs 7263.0 times
- Medicare patients
- 541vs 2362.3 times
- Part D claims
- 121vs 7366% above
Medians across 1,081 orthopedic surgeons in New York with Dmand AI profiles that report each measure.
Dr. Sirounian'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 Dr. Sirounian and other orthopedic surgeons in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory H. Sirounian treated 541 Medicare patients in 2024, average age 75
CMS counts 541 Medicare patients who saw Dr. Sirounian in 2024. The largest group is 65 to 74, with 245 patients. 75% of them have arthritis, and 75% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sirounian's median patient age at 70, with 59% women.
Dr. Sirounian's Medicare patients by age, 2024
Dr. Sirounian's Medicare patients by sex, 2024
- Women34764%
- Men19436%
Chronic conditions among Dr. Sirounian's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease35%
- Diabetes30%
- Anxiety25%
- Mood disorders23%
- Cancer20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sirounian'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
- Women59%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory H. Sirounian wrote 155 Medicare Part D claims in 2024
In 2024, Dr. Sirounian wrote 155 Medicare Part D claims for 75 patients. 99% of them were for generic drugs. CMS names the drug for 121 of them, across 3 drugs with 11 or more claims each, at $421 in total drug cost. In 2023, CMS named 118 claims across 3 drugs.
Dr. Sirounian's Part D claims by kind of drug, 2024
- Generic154 claims99%
- Brand-name and other1 claims1%
Dr. Sirounian'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 Dr. Sirounian's Part D claims, 2024
- Opioids15%24 of 155 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1182024: 1213%
Drugs named by CMS: 3 in 2024, 3 in 2023.
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
Dr. Gregory H. Sirounian scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Sirounian for performance year 2024, reported as part of a group. Dr. Sirounian accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 46 procedures of hip replacement by Dr. Sirounian, more than 85% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Sirounian's MIPS scores, performance year 2024
- 91of 100Final score
- 91.8of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Sirounian ranks in Medicare procedure volume
- Knee replacement
- 82nd percentile57 procedures
- Hip replacement
- 85th percentile46 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gregory H. Sirounian received $6,889 in industry payments from 2016 to 2025
CMS Open Payments shows 139 general payments to Dr. Sirounian from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 62% of the total. Zimmer Biomet Holdings, Inc. paid the most, $3,880.
General payments to Dr. Sirounian by program year, 2016 to 2025
General payments to Dr. Sirounian by kind, 2016 to 2025
- Food and beverage$4,27462%
- Travel and lodging$2,49936%
- Education$1011%
- Gifts$150%
Companies that paid Dr. Sirounian 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. Gregory H. Sirounian graduated from Oregon Health Sciences University School of Medicine
Dr. Sirounian graduated from Oregon Health Sciences University School of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory H. Sirounian'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 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) |
| 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)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. Gregory H. Sirounian
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. Gregory H. Sirounian's NPI number?
Dr. Gregory H. Sirounian's NPI number is 1558356063. It was assigned on September 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory H. Sirounian?
Dr. Gregory H. Sirounian is an orthopedic surgeon in New York, New York. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Gregory H. Sirounian practice?
Dr. Sirounian practices at 650 1st Ave, New York, NY 10016. Dr. Sirounian's primary practice is Nyumc Radiology Associates in New York, New York. Dmand AI also links Dr. Sirounian to 3 group practices and clinics, 2 medical groups and 1 home health agency.
What is Dr. Gregory H. Sirounian's office phone number?
The practice phone on file for Dr. Sirounian is (212) 263-0001.
What is Dr. Gregory H. Sirounian's medical license number?
Dr. Sirounian holds Arizona license 30048, one of the licenses on file in 2 states.
Which states has Dr. Gregory H. Sirounian been licensed in?
Dmand AI has state licenses on file for Dr. Sirounian in Arizona and New York.
Which hospitals is Dr. Gregory H. Sirounian affiliated with?
Dr. Sirounian is affiliated with Tisch Hospital.
What medical group is Dr. Gregory H. Sirounian part of?
Dr. Sirounian is linked to NYU Langone Orthopedic Surgery Associates. Dmand AI links Dr. Sirounian to 2 more medical groups.
Does Dr. Gregory H. Sirounian accept Medicare?
Yes. CMS data shows Dr. Sirounian billed Medicare for 2,146 services in 2024, and Dr. Sirounian accepts Medicare assignment.
What is Dr. Gregory H. Sirounian's MIPS score?
Dr. Sirounian's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Gregory H. Sirounian see?
CMS counts 541 Medicare patients who saw Dr. Sirounian in 2024, with an average age of 75.
What services does Dr. Gregory H. Sirounian bill to Medicare?
In 2024, Dr. Sirounian's most billed Medicare services were injected or infused drug (J3301), surgery: bones and joints (20610) and office visit, established patient (99213).
Where did Dr. Gregory H. Sirounian go to medical school?
Dr. Sirounian graduated from Oregon Health Sciences University School of Medicine in 1996.
What drugs does Dr. Gregory H. Sirounian prescribe most?
In 2024 Medicare Part D data, Dr. Sirounian's most prescribed drugs by claims were Meloxicam, Diclofenac Sodium and Oxycodone HCl.
Has Dr. Gregory H. Sirounian received payments from drug or device companies?
CMS Open Payments shows $6,889 in general payments to Dr. Sirounian from 20 companies from 2016 to 2025. The largest total came from Zimmer Biomet Holdings, Inc.
How long has Dr. Gregory H. Sirounian been practicing?
Dr. Sirounian graduated from medical school in 1996, 30 years ago.
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