Dr. Hang Sik Byun, MD
- Medicare services, 2019
- 15
- Medicare patients, 2024
- 15
- Part D claims, 2019
- 15
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 79-01 Broadway, Elmhurst, NY 11373
- Practice phone
- Call (718) 334-1141
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Byun'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. Hang Sik Byun is a neurosurgeon in Elmhurst, New York
Dr. Byun practices at NYC Health + Hospitals/Elmhurst in Elmhurst, New York, part of NYC.
Dr. Byun's NPI, 1073544565, was assigned on July 5, 2006. Dr. Byun holds New York license 1111711.
- NPI
- 1073544565NPI Registry (opens in a new tab)
- NPI enumeration date
- July 5, 2006
- NPI status
- Active
- Practice phone
- (718) 334-1141
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 87
- Medical school graduation
- 1965
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Hang Sik Byun practices at NYC Health + Hospitals/Elmhurst in Elmhurst, New York
Dr. Byun's primary practice is NYC Health + Hospitals/Elmhurst, at 79-01 Broadway, Elmhurst, NY 11373 in Queens County. The practice phone is (718) 334-1141.
- NYC Health + Hospitals/Elmhurst79-01 Broadway, Elmhurst, NY 11373 · Queens CountyPhone(718) 334-1141
Source: Dmand AI Affiliation Data
Dr. Hang Sik Byun is affiliated with 1 site of care and 1 medical group
Dr. Byun's primary practice is NYC Health + Hospitals/Elmhurst in Elmhurst, New York, part of NYC. The medical group on file is Mount Sinai Elmhurst Faculty Practice Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hang Sik Byun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Byun practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| NYC Health + Hospitals/Elmhurst | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Hang Sik Byun is one of 455 neurosurgeons in New York
Neurological surgery is Dr. Byun's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Byun is licensed in New York.
Specialties and state licenses
- Neurological surgery, New YorkPrimary
Neurosurgeons near Dr. Byun
Counts of neurosurgeons 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. Hang Sik Byun billed Medicare for 15 services in 2019
CMS data shows 15 Medicare services from Dr. Byun across 1 procedure code in 2019, all of them office visits, for 15 Medicare patients. Medicare paid $712 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Byun's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 152019: 15No change
Dr. Byun compared with the New York median for neurosurgeons, 2019
- Dr. Byun
- New York median
- Medicare services
- 15vs 16291% below
- Medicare patients
- 15vs 11387% below
- Part D claims
- 15vs 2232% below
Medians across 411 neurosurgeons in New York with Dmand AI profiles that report each measure.
Dr. Byun's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Byun?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Byun and other neurosurgeons in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hang Sik Byun treated 15 Medicare patients in 2024, average age 77
CMS counts 15 Medicare patients who saw Dr. Byun in 2024. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Byun's median patient age at 72, with 49% women.
Chronic conditions among Dr. Byun's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Byun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Hang Sik Byun wrote 15 Medicare Part D claims in 2019
In 2019, Dr. Byun wrote 15 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $143 in total drug cost. In 2017, CMS named 20 claims across 1 drug.
Dr. Byun's most prescribed drugs by claims, 2019
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, 2017 to 2019
- 2017
- 2019
- Claims for drugs CMS names
- 2017: 202019: 1525%
Drugs named by CMS: 1 in 2019, 1 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Hang Sik Byun has 1 publication on record
Dmand AI links 1 paper to Dr. Byun in 2022. Dr. Byun's most frequent co-authors are Zachary Lee Hickman, MD and Salazar A. Jones, MD.
Dr. Byun's most frequent co-authors
Recent publications by Dr. Byun
See who Dr. Byun researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Byun works with, so you can find a warm path to the right neurosurgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Hang Sik Byun received $510 in industry payments from 2017 to 2025
CMS Open Payments shows 13 general payments to Dr. Byun from 6 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $259.
General payments to Dr. Byun by program year, 2017 to 2025
Companies that paid Dr. Byun the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Hang Sik Byun'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Hang Sik Byun
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. Hang Sik Byun's NPI number?
Dr. Hang Sik Byun's NPI number is 1073544565. It was assigned on July 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Hang Sik Byun?
Dr. Hang Sik Byun is a neurosurgeon in Elmhurst, New York. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Hang Sik Byun practice?
Dr. Byun practices at 79-01 Broadway, Elmhurst, NY 11373. Dr. Byun's primary practice is NYC Health + Hospitals/Elmhurst in Elmhurst, New York, part of NYC.
What is Dr. Hang Sik Byun's office phone number?
The practice phone on file for Dr. Byun is (718) 334-1141.
What is Dr. Hang Sik Byun's medical license number?
Dr. Byun holds New York license 1111711.
Which hospitals is Dr. Hang Sik Byun affiliated with?
Dr. Byun practices at NYC Health + Hospitals/Elmhurst in Elmhurst, New York.
What medical group is Dr. Hang Sik Byun part of?
Dr. Byun is linked to Mount Sinai Elmhurst Faculty Practice Group.
Does Dr. Hang Sik Byun accept Medicare?
Yes. CMS data shows Dr. Byun billed Medicare for 15 services in 2019.
How many Medicare patients does Dr. Hang Sik Byun see?
CMS counts 15 Medicare patients who saw Dr. Byun in 2024, with an average age of 77.
What services does Dr. Hang Sik Byun bill to Medicare?
In 2019, Dr. Byun's most billed Medicare services were office visit, established patient (99213).
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What drugs does Dr. Hang Sik Byun prescribe most?
In 2019 Medicare Part D data, Dr. Byun's most prescribed drugs by claims were Gabapentin.
Has Dr. Hang Sik Byun received payments from drug or device companies?
CMS Open Payments shows $510 in general payments to Dr. Byun from 6 companies from 2017 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Hang Sik Byun been practicing?
Dr. Byun graduated from medical school in 1965, 61 years ago.
Does Dr. Hang Sik Byun do research?
Dmand AI links 1 publication to Dr. Byun.
Who does Dr. Hang Sik Byun publish with?
Dr. Byun's most frequent co-authors are Zachary Lee Hickman, MD (1 shared paper) and Salazar A. Jones, MD (1 shared paper).
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