Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. VASSILIOS G. DIMOPOULOS M.D.
NPI 1720099724
Neurological Surgery in West Islip, NY

Active since August 11, 2006PECOS Enrolled
77.25/100
CMS Quality Rating
380 MONTAUK HWY, WEST ISLIP, NY 11795(631) 482-9977(631) 422-4169 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Vassilios G. Dimopoulos M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. VASSILIOS G. DIMOPOULOS M.D. (NPI 1720099724) is an individual neurological surgery provider in West Islip, New York, licensed in New York (277247) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Sisters Of Charity Hospital, and is a graduate of University Of Rochester School Of Medicine And Dentistry (2013).

NPPES Registry Identity

NPI1720099724
Entity TypeIndividualMale
Primary Taxonomy207T00000X
Provider Legal NameDR. VASSILIOS G. DIMOPOULOSCredential: M.D.
Location Address380 MONTAUK HWYWest Islip, NY 11795-4403
Mailing Address380 Montauk HwyWest Islip, NY 11795-4403 · (631) 482-9977 · Fax (631) 422-4169
Fax(631) 422-4169
Sole ProprietorNo
Medical School CMSUniversity Of Rochester School Of Medicine And DentistryGraduated 2013
Enumeration DateAugust 11, 2006
Last NPPES UpdateJuly 27, 2026
NPPES CertifiedJuly 27, 2026
NPI 1720099724 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207T00000X
License Licensed in NY · 277247
Definition
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.
380 MONTAUK HWY, West Islip, NY 11795

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Vassilios G. Dimopoulos M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3476879206
PECOS Enrollment IDI20150313000140
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
64 services36 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
14 services14 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Sisters Of Charity Hospital

Acute Care Hospitals · Buffalo, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330078
Location2157 Main StreetBuffalo, NY 14214 · Erie County
Emergency services Birthing friendly

Kenmore Mercy Hospital

Acute Care Hospitals · Kenmore, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330102
Location2950 Elmwood AvenueKenmore, NY 14217 · Erie County
Emergency services

Good Samaritan Hospital Medical Center

Acute Care Hospitals · West Islip, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330286
Location1000 Montauk HighwayWest Islip, NY 11795 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11795 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$83.44 typical visit price
range $21.66 – $164.45
Typical copayment $20.86 (range $5.41 – $41.11)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.25/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality72.02
Promoting Interoperability61
Improvement Activities40
Cost78.98

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
80%134 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Neurological Surgery
380 MONTAUK HWY
WEST ISLIP, NY 11795
Neurological Surgery
380 MONTAUK HWY
WEST ISLIP, NY 11795
Neurological Surgery
380 MONTAUK HWY
WEST ISLIP, NY 11795
Anesthesiology (Pain Medicine)
380 MONTAUK HWY
WEST ISLIP, NY 11795
Neurological Surgery
380 MONTAUK HWY
WEST ISLIP, NY 11795
Physical Medicine & Rehabilitation (Sports Medicine)
380 MONTAUK HWY
WEST ISLIP, NY 11795
Neurological Surgery
380 MONTAUK HWY
WEST ISLIP, NY 11795
Neurological Surgery
380 MONTAUK HWY
WEST ISLIP, NY 11795

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Vassilios Dimopoulos's NPI number?

The NPI number for Vassilios Dimopoulos is 1720099724. It was assigned to this individual provider in the NPPES registry on August 11, 2006.

Where is Vassilios Dimopoulos located?

Vassilios Dimopoulos practices at 380 Montauk Hwy, West Islip, NY 11795. The listed phone number is (631) 482-9977.

What is Vassilios Dimopoulos's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Vassilios Dimopoulos enrolled in Medicare?

Yes. Vassilios Dimopoulos is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Vassilios Dimopoulos affiliated with any hospitals?

According to CMS data, Vassilios Dimopoulos is affiliated with Sisters Of Charity Hospital, Kenmore Mercy Hospital and Good Samaritan Hospital Medical Center.

When was this NPI record last updated?

The NPPES record for Vassilios Dimopoulos was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.