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

GREGORY V DEFAZIO MD
NPI 1164495628
Obstetrics & Gynecology in Brooklyn, NY

Active since February 07, 2006PECOS EnrolledAccepts Medicare Assignment
90.38/100
CMS Quality Rating
1301 82ND STREET, BROOKLYN, NY 11228(718) 836-3721(718) 259-6567 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Gregory V Defazio Md NPPES

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

GREGORY V DEFAZIO MD (NPI 1164495628) is an individual obstetrics & gynecology provider in Brooklyn, New York, licensed in New York (198761) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Staten Island University Hospital, and is a graduate of State University Of New York Downstate Medical Center (1991).

NPPES Registry Identity

NPI1164495628
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameGREGORY V DEFAZIOCredential: MD
Location Address1301 82ND STREETBrooklyn, NY 11228
Mailing Address1301 82nd Street, Box 26Brooklyn, NY 11228 · (718) 836-3721 · Fax (718) 259-6567
Phone(718) 836-3721
Fax(718) 259-6567
Sole ProprietorNo
Medical School CMSState University Of New York Downstate Medical CenterGraduated 1991
Enumeration DateFebruary 7, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1164495628 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in NY · 198761
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1301 82ND STREET, Brooklyn, NY 11228
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Other Identifiers 1

Medicaid01606046NY

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

Gregory V Defazio Md 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 ID8224013537
PECOS Enrollment IDI20040621001869
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 7

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 low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
103 services80 patients
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091
A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.
48 services48 patients
Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101
This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.
44 services44 patients
Telephone medical discussion with physician, 5-10 minutes 99441
A telephone medical discussion with a physician is a brief, 5-10 minute call where you can discuss your health concerns. It's a convenient way to receive medical advice without needing to visit a clinic. It's important to prepare questions in advance to make the most of this time.
22 services18 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
21 services17 patients
Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 76830
An ultrasound scan of the lower abdominal region is a safe, non-invasive procedure that uses sound waves to create images of internal structures. This helps in checking the health of reproductive organs and detecting any abnormalities. The scan is done via a small probe inserted into the body.
16 services14 patients

Hospital Affiliations CMS Care Compare

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

Staten Island University Hospital

Acute Care Hospitals · Staten Island, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330160
Location475 Seaview AvenueStaten Island, NY 10305 · Richmond County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11228 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.

90.38/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality87.09
Promoting Interoperability100
Improvement Activities40
Cost56.12

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 Gregory Defazio's NPI number?

The NPI number for Gregory Defazio is 1164495628. It was assigned to this individual provider in the NPPES registry on February 7, 2006.

Where is Gregory Defazio located?

Gregory Defazio practices at 1301 82nd Street, Brooklyn, NY 11228. The listed phone number is (718) 836-3721.

What is Gregory Defazio's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Gregory Defazio enrolled in Medicare?

Yes. Gregory Defazio 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 Gregory Defazio affiliated with any hospitals?

According to CMS data, Gregory Defazio is affiliated with Staten Island University Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Defazio was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 43 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.