John K Byun, MD - Medicare Radiation Oncology in Stony Brook, NY

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John K Byun, MD is a medicare enrolled "Radiology - Radiation Oncology" physician in Stony Brook, New York. He graduated from medical school in 2014 and has 12 years of diverse experience with area of expertise as Radiation Oncology. He is a member of the group practice Stanford Health Care and his current practice location is 101 Nicolls Rd, Stony Brook, New York. You can reach out to his office (for appointments etc.) via phone at (631) 444-2325.

John K Byun is licensed to practice in New York (license number 345605) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1528487089.

Contact Information

John K Byun, MD
101 Nicolls Rd,
Stony Brook, NY 11794-0001
(631) 444-2325
Not Available

Map and Direction




Physician's Profile

Full NameJohn K Byun
GenderMale
SpecialityRadiation Oncology
Experience12 Years
Location101 Nicolls Rd, Stony Brook, New York
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • John K Byun graduated from medical school in 2014
  NPI Data:
  • NPI Number: 1528487089
  • Provider Enumeration Date: 04/14/2014
  • Last Update Date: 08/11/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 4486985173
  • Enrollment ID: I20240719002320

Medical Identifiers

Medical identifiers for John K Byun such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1528487089NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology 345605 (New York)Primary
2085R0001XRadiology - Radiation Oncology 25MA10129400 (New Jersey)Secondary
2085R0001XRadiology - Radiation Oncology C197416 (California)Secondary
2085R0001XRadiology - Radiation Oncology 281113 (Massachusetts)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Eden Medical CenterCastro valley, CAHospital
Stanford Health CareStanford, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Stanford Health Care67097974913152

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. John K Byun allows following entities to bill medicare on his behalf.
Entity NameStanford Health Care
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437292927
PECOS PAC ID: 6709797491
Enrollment ID: O20031124000348
Entity NameLpch Medical Group Div of Lucile
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417907940
PECOS PAC ID: 0840298543
Enrollment ID: O20061113000232
Entity NameGrass Valley Radiation Oncology
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649895194
PECOS PAC ID: 3779902192
Enrollment ID: O20201002001867

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. John K Byun is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
John K Byun, MD
Po Box 419033,
Boston, MA 02241-9033

Ph: (631) 444-2325		John K Byun, MD
101 Nicolls Rd,
Stony Brook, NY 11794-0001

Ph: (631) 444-2325

Reviews and Comments


Radiology Doctors in Stony Brook, NY

Dr. Avraham Bluestone, MD,PHD
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: Stony Brook Radiology, Hsc L4, Room 120, Stony Brook, NY 11794
Phone: 631-444-5400    Fax: 631-444-7538
Kathleen Marie Finzel, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 101 Nicolls Rd Rm 120, Health Science Center Leve 4 8460, Stony Brook, NY 11794
Phone: 631-444-5400    
Dr. Corazon Cabahug, MD
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Practice Location: University Hospital At Stony Brook, Level 4, Stony Brook, NY 11794
Phone: 631-444-6919    
Mingqian Huang, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: Nicolls Road And Health Sciences, Hsc Level 4 Room 120, Stony Brook, NY 11794
Phone: 631-444-7955    
Dr. Punit Chhaganlal Aghera, M.D.
Radiology
Medicare: Not Enrolled in Medicare
Practice Location: Hsc L4 Rm 120, Stony Brook, NY 11794
Phone: 631-444-5400    Fax: 631-444-7538
Charles Jonathan Lugo, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 101 Nicolls Rd, Stony Brook, NY 11794
Phone: 631-444-5400    Fax: 631-444-7538
Dr. Kevin Scott Baker, MD
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: Hsc Level 4 Rm 120, Department Of Radiology, Stony Brook, NY 11794
Phone: 631-444-5400    Fax: 631-444-7538

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.