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DR. JACK M GREENWOOD MD
NPI 1851396865
Psychiatry & Neurology - Neurology with Special Qualifications in Child Neurology in Port Jefferson, NY

Active since June 16, 2005PECOS EnrolledAccepts Medicare Assignment
120 N COUNTRY RD, PORT JEFFERSON, NY 11777(631) 474-0444(631) 928-8605 Get Directions Write a Review

NPPES record last updated: April 2, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Jack M Greenwood Md NPPES

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

DR. JACK M GREENWOOD MD (NPI 1851396865) is an individual neurology with special qualifications in child neurology provider in Port Jefferson, New York, licensed in New York (124686) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and is a graduate of New York University School Of Medicine (1974).

NPPES Registry Identity

NPI1851396865
Entity TypeIndividualMale
Primary Taxonomy2084N0402X
Provider Legal NameDR. JACK M GREENWOODCredential: MD
Location Address120 N COUNTRY RDPort Jefferson, NY 11777-2604
Mailing Address120 N Country RdPort Jefferson, NY 11777-2604 · (631) 474-0444 · Fax (631) 928-8605
Phone(631) 474-0444
Fax(631) 928-8605
Sole ProprietorYes
Medical School CMSNew York University School Of MedicineGraduated 1974
Enumeration DateJune 16, 2005
Last NPPES UpdateApril 2, 2008
✔ NPI 1851396865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Neurology with Special Qualifications in Child NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0402X
License✔ Licensed in NY · 124686
Definition
A Child Neurologist specializes in neurology with special skills in diagnosis and treatment of neurologic disorders of the neonatal period, infancy, early childhood, and adolescence.
120 N COUNTRY RD, Port Jefferson, NY 11777
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Other Identifiers 3

Medicare UPINC08041NY
Medicare PIN30A661NY
Medicaid00664526NY

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. Jack M Greenwood 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 ID9436058674
PECOS Enrollment IDI20040107000130
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 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.
92 services48 patients
Test to assess balance during warm and cool irrigation in both ears 92537
This is a test called caloric stimulation, used to check your balance function. During this procedure, warm and cool water are gently introduced into your ears. Your eye movements are then observed, as they can indicate issues with balance or inner ear function.
53 services45 patients
Evaluation and testing for balance with recording 92540
This procedure involves a series of evaluations and tests to analyze your balance. Recordings are made to track your performance, helping identify any issues. This aids in determining the best treatment for any balance disorders you may have.
53 services45 patients
Test for abnormal eye movement using a rotating chair 92546
A rotating chair test helps doctors assess balance issues. You'll sit in a motorized chair that spins at controlled speeds. As the chair moves, your eye movements are monitored to identify any irregularities, which can indicate balance disorders.
53 services45 patients
Test for balance and posture 92548
A balance and posture test assesses your ability to maintain steady positioning and coordination. It involves simple tasks like standing on one foot or walking in a straight line. This helps identify any issues with your balance system, which can affect daily activities.
53 services45 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
18 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11777 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
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

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

JOAN L NATHAN A.N.P.
Nurse Practitioner (Adult Health)
120 N COUNTRY RD
PORT JEFFERSON, NY 11777
Suffolk County (631) 928-4586
JENNIFER ANCONA
Physician Assistant
120 N COUNTRY RD, SUITE 1
PORT JEFFERSON, NY 11777
Suffolk County (631) 928-4990
JOHN T. MATHER MEMORIAL HOSPITAL
Radiology (Diagnostic Radiology)
120 N COUNTRY RD
PORT JEFFERSON, NY 11777
Suffolk County (631) 473-1320
JOHN T. MATHER MEMORIAL HOSPITAL
General Acute Care Hospital
120 N COUNTRY RD
PORT JEFFERSON, NY 11777
Suffolk County (631) 473-4443
MRS. DEANNA AMBER SPENCE NURSE PRACTITIONER
Nurse Practitioner (Family)
120 N COUNTRY RD
PORT JEFFERSON, NY 11777
Suffolk County (631) 474-7461
PAUL A. LUSMAN, M.D.P.C.
Specialist
120 N COUNTRY RD
PORT JEFFERSON, NY 11777
Suffolk County (631) 928-4990
DR. PAUL ALAN LUSMAN M.D.
Allergy & Immunology
120 N COUNTRY RD, SUITE 1
PORT JEFFERSON, NY 11777
Suffolk County (631) 928-4990

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 Jack Greenwood's NPI number?

The NPI number for Jack Greenwood is 1851396865. It was assigned to this individual provider in the NPPES registry on June 16, 2005.

Where is Jack Greenwood located?

Jack Greenwood practices at 120 N Country Rd, Port Jefferson, NY 11777. The listed phone number is (631) 474-0444.

What is Jack Greenwood's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology with Special Qualifications in Child Neurology, with taxonomy code 2084N0402X.

Is Jack Greenwood enrolled in Medicare?

Yes. Jack Greenwood 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.

When was this NPI record last updated?

The NPPES record for Jack Greenwood was last updated on April 2, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.