Dr. Jay Young Chun , MD
Neurological Surgery • Summit, NJ
33 Overlook Rd Ste 305
Summit, NJ 079013563
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
-
NPI assigned on May 1, 2006; this date does not establish years in practice.
-
Published CMS data list 93 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
-
Published Part B service records, 2024:
- 99213 — Established patient outpatient office visit: 55 service units.
- 99203 — New patient outpatient office visit: 38 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table · Guide: How to read Medicare Part B data
-
Published CMS data list 67 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
-
Published Part D records, 2024:
- Gabapentin — 25 prescription fills, including refills.
- Baclofen — 17 prescription fills, including refills.
- Cyclobenzaprine Hcl — 14 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 4 records in the table · Guide: How to read Medicare Part D prescriber data
-
Fewer Medicare Part B services than 80% of clinicians listed under Neurological Surgery in New Jersey (2024, 124 clinicians with data). Median for this group: 247. Middle half: 129 to 364.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
-
Medicare Part B services went from 146 in 2020 to 93 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
33 Overlook Rd Ste 305
Summit, NJ 079013563
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Neurological Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
74 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $9,991 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $7,808 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
74 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$526 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $755.53 across 10 records.
By nature of payment
- Food and Beverage: $755.53 across 10 records.
Reporting-company totals (3 largest of 5)
- Medtronic, Inc.: $411.35 across 6 records.
- EBI, LLC: $128.66 across 1 record.
- Highridge Medical LLC: $128.66 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Chun has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Chun as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Summit and New Jersey
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 80% of clinicians listed under Neurological Surgery in New Jersey (2024, 124 clinicians with data). Median for this group: 247. Middle half: 129 to 364.
Too few clinicians listed under Neurological Surgery in Summit have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 85% of clinicians listed under Neurological Surgery in New Jersey (2024, 124 clinicians with data). Median for this group: $40,820. Middle half: $15,127 to $70,586.
Too few clinicians listed under Neurological Surgery in Summit have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 85% of clinicians listed under Neurological Surgery in New Jersey (2024, 124 clinicians with data). Median for this group: $32,024. Middle half: $11,819 to $55,718.
Too few clinicians listed under Neurological Surgery in Summit have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Neurological Surgery in New Jersey (2024, 68 clinicians with data). Median for this group: 47. Middle half: 24 to 91.
Too few clinicians listed under Neurological Surgery in Summit have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Neurological Surgery in New Jersey (2024, 68 clinicians with data). Median for this group: $476. Middle half: $179 to $2,084.
Too few clinicians listed under Neurological Surgery in Summit have Medicare Part D data for 2024 to compare.
3 active clinicians are listed under Neurological Surgery with a practice address in Summit, NJ (190 in New Jersey).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
-
Medicare Part B services
Medicare Part B services decreased 36% from 146 in 2020 to 93 in 2024.
- 2020: 146
- 2021: 352
- 2022: 329
- 2023: 285
- 2024: 93
-
Medicare-allowed amount
Medicare-allowed amount decreased 74% from $38,036 in 2020 to $9,991 in 2024.
- 2020: $38,036
- 2021: $67,265
- 2022: $49,516
- 2023: $43,163
- 2024: $9,991
-
Paid by Medicare
Paid by Medicare decreased 74% from $29,985 in 2020 to $7,808 in 2024.
- 2020: $29,985
- 2021: $53,447
- 2022: $36,804
- 2023: $32,786
- 2024: $7,808
-
Medicare Part D prescriptions
Medicare Part D prescriptions increased 191% from 23 in 2020 to 67 in 2024.
- 2020: 23
- 2021: 80
- 2022: 143
- 2023: 116
- 2024: 67
-
30-day fills
30-day fills increased 222% from 23 in 2020 to 74 in 2024.
- 2020: 23
- 2021: 81
- 2022: 144
- 2023: 123
- 2024: 74
-
Part D drug cost
Part D drug cost went from $123 in 2020 to $526 in 2024.
- 2020: $123
- 2021: $639
- 2022: $1,175
- 2023: $1,416
- 2024: $526
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $69.75 in 2021 to $755.53 in 2025.
- 2021: $69.75
- 2022: $8,078.77
- 2023: $4,364.59
- 2024: $890.92
- 2025: $755.53
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $755.53.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ATLANTIS ANTERIOR CERVICAL PLATE SYSTEM | General | $168.24 |
| Highridge Medical LLC |
Food and Beverage
In-kind items and services
|
Biomet SpinalPak Non-invasive Spine Fusion Stimulator System | General | $128.66 |
| EBI, LLC |
Food and Beverage
In-kind items and services
|
BIOMET SPINALPAK NON-INVASIVE SPINE FUSION STIMULATOR SYSTEM | General | $128.66 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
GRAFTONAND GRAFTON PLUSDEMINERALIZED BONE MATRIX (DBM) | General | $112.34 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
|
General - Pain Management | General | $60.25 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
CATALYFT PL EXPANDABLE INTERBODY SYSTEM | General | $39.47 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ATLANTIS ANTERIOR CERVICAL PLATE SYSTEM | General | $37.53 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
ATLANTIS ANTERIOR CERVICAL PLATE SYSTEM | General | $29.38 |
| Sanara MedTech Inc. |
Food and Beverage
Cash or cash equivalent
|
CellerateRX | General | $26.61 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
GRAFTONAND GRAFTON PLUSDEMINERALIZED BONE MATRIX (DBM) | General | $24.39 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
55 | 44 | $125.63 | $98.98 |
|
99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
38 | 38 | $208.40 | $119.66 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Gabapentin | Gabapentin | 25 | 960 | $210.46 | 11 |
| Baclofen | Baclofen | 17 | 495 | $144.00 | — |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 14 | 280 | $126.03 | — |
| Methylprednisolone | Methylprednisolone | 11 | 66 | $45.73 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-08-30NUCC Taxonomy Code: 207T00000X
A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEUROSURGERY
I20041123000263
NJ
1153226451
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Orthopaedic Surgery - Orthopaedic Surgery of the Spine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 33 OVERLOOK RD STE 305, SUMMIT, NJ 079013563 (Tel: 9083761520)
Registered at 33 OVERLOOK RD STE 305, SUMMIT, NJ 079013563 (Tel: 9083761520)
Neurological Surgery (license number reported to NPPES: NJ 25MA07749300)
NPI status registered as active in NPPES database
Registered at 310 MADISON AVE, SUITE 300, MORRISTOWN, NJ 07960 (Tel: 9732857800)
Registered at 310 MADISON AVE, SUITE 300, MORRISTOWN, NJ 07960 (Tel: 9732857800)
Recorded as JAY CHUN, MD
Neurological Surgery (license number reported to NPPES: NJ 07749300)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
33 Overlook Rd Ste 305
Summit, NJ 079013563
Phone: 9083761520