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JOHN CHRIS ALEXOPOULOS M.D.
NPI 1306013446
Internal Medicine in Northport, NY

Active since May 08, 2008PECOS Enrolled
79 MIDDLEVILLE RD, NORTHPORT, NY 11768(631) 261-4400(631) 863-4878 Get Directions Write a Review

NPPES record last updated: May 6, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About John Chris Alexopoulos M.d. NPPES

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

JOHN CHRIS ALEXOPOULOS M.D. (NPI 1306013446) is an individual internal medicine provider in Northport, New York, licensed in Michigan (4301099567) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1306013446
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJOHN CHRIS ALEXOPOULOSCredential: M.D.
Location Address79 MIDDLEVILLE RDNorthport, NY 11768-2296
Mailing Address79 Middleville RdNorthport, NY 11768-2296 · (631) 261-4400 · Fax (631) 863-4878
Phone(631) 261-4400
Fax(631) 863-4878
Sole ProprietorNo
Enumeration DateMay 8, 2008
Last NPPES UpdateMay 6, 2026
NPPES CertifiedMay 6, 2026
✔ NPI 1306013446 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · 4301099567
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedHospitalistTaxonomy 208M00000X · License 4301099567 (MI)
79 MIDDLEVILLE RD, Northport, NY 11768
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John Chris Alexopoulos M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11768 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 20

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

DAVID WAYNE GATELY PHD
Psychologist (Clinical)
79 MIDDLEVILLE RD, VA MEDICAL CENTER, PSYCHOLOGY SERVICE (116B)
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
DR. YOUNGHEE J LIMB M.D.
Internal Medicine (Geriatric Medicine)
79 MIDDLEVILLE RD, NORTHPORT VAMC
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
DR. WEN-WEI TCHOU M.D.
Internal Medicine (Hematology & Oncology)
79 MIDDLEVILLE RD, 111-S
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
DR. IRA REZAK M.D.
Internal Medicine (Pulmonary Disease)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
MRS. CONCETTA MARIE MANISERO NP
Nurse Practitioner (Adult Health)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
MISS GLORIA A. IVANY NP
Nurse Practitioner
79 MIDDLEVILLE RD, HEM/ONC DEPART BLDG 200
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
TROY EVERETT DIXON M.D.
Internal Medicine (Nephrology)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Suffolk County (631) 261-4400
DR. MANDAR G TANK M.D.
Internal Medicine
79 MIDDLEVILLE RD, VA MEDICAL CENTER
NORTHPORT, NY 11768
Suffolk County (631) 261-4400

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 John Alexopoulos's NPI number?

The NPI number for John Alexopoulos is 1306013446. It was assigned to this individual provider in the NPPES registry on May 8, 2008.

Where is John Alexopoulos located?

John Alexopoulos practices at 79 Middleville Rd, Northport, NY 11768. The listed phone number is (631) 261-4400.

What is John Alexopoulos's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is John Alexopoulos enrolled in Medicare?

Yes. John Alexopoulos is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Alexopoulos was last updated on May 6, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.