John Oppenheimer, M.D

ActiveIndividual ProviderInternal Medicine
NPI issued: August 29, 2005

Quick Facts

NPI Number
1659364214
TypeIndividual
StatusActive
SpecialtyInternal Medicine
Taxonomy207R00000X — Internal Medicine
Phone
(631) 725-4600
StateNY

NPI Validation Status: Verified

✅Valid 10-digit NPI number (1659364214)
✅Active status confirmed
✅Verified by CMS NPPES Registry
✅HIPAA compliant identifier
✅Enumeration date on file (August 29, 2005)
Data source: CMS NPPES

Provider Overview

JOHN OPPENHEIMER, M.D is a Internal Medicine provider based in Sag Harbor, NY who has been registered with CMS since 2005. This NPI is currently Active under CMS NPPES registry.

Provider Details

NPI Number1659364214
Provider TypeIndividual Provider
GenderMale
CredentialM.D
StatusActive
Enumeration DateAugust 29, 2005

Practice Location

CitySag Harbor
StateNY
ZIP Code11963-3106
Phone(631) 725-4600

Specialties & Licenses

★ Primary
SpecialtyInternal Medicine
Taxonomy Code207R00000X
License StateNY

Mailing Address

CitySag Harbor
StateNY
ZIP Code11963-3106
Phone(631) 725-4600
Same as practice location

How to Use This NPI

📋

For Insurance Billing

Use NPI 1659364214 in Box 33 of the CMS-1500 claim form. This number is required by all major insurance carriers to identify the billing provider and process electronic medical claims.

🏥

For Credentialing

Reference NPI 1659364214for provider credential verification. Hospital systems, state licensing boards, and CAQH directories query this number to verify the provider's active clinical status.

👤

For Patients

Share NPI 1659364214 with your insurance company. If you need to verify out-of-network benefits or file a reimbursement claim, your insurance provider will require this number to process it.

About Internal Medicine

Internal Medicine physicians (internists) specialize in the prevention, diagnosis, and nonsurgical treatment of adult illnesses, managing complex chronic conditions and multi-system diseases.

Browse all Internal Medicineproviders →
📊
213,549
Internal Medicine Providers in the US

Similar Providers in Sag Harbor

Victoria Sharp, M.D

📍 Sag Harbor, NY 11963

Other Healthcare Providers in Sag Harbor

Liliana Fazendeiro, PTA

Massage Therapist

Nicholas Daba, PTA

Specialty not listed

Sinead Fitzgibbon, PT, PHD

Physical Therapy

Bbmj Inc

Specialty not listed

Katherine Mitchell, LCSW

Social Worker

John French, DMD

Dentistry

Other Internal Medicine Providers in New York

Jill Potts, M.D

NPI: 1245233295📍 Canandaigua

Collins Kellogg, MD

NPI: 1225031255📍 Watertown

Richard Tuckman

NPI: 1487657649📍 Stony Brook

Dina Kringstein, MD

NPI: 1770586927📍 Pittsford

Joseph George, MD

NPI: 1023011277📍 New Windsor

Marc Berliant, MD

NPI: 1154324317📍 Rochester
View all Internal Medicine providers in New York→

People Also Ask

What is John Oppenheimer's NPI number?
John Oppenheimer's NPI number is 1659364214, a unique 10-digit identifier issued by the Centers for Medicare & Medicaid Services (CMS).
Is John Oppenheimer's NPI currently active?
Yes, John Oppenheimer's NPI status is Active as of the latest CMS NPPES database updates.
What does John Oppenheimer specialize in?
John Oppenheimer specializes in Internal Medicine. The healthcare taxonomy code associated with this specialty is 207R00000X.
Where does John Oppenheimer practice?
John Oppenheimer practices in Sag Harbor, NY 11963-3106.
When was John Oppenheimer's NPI issued?
John Oppenheimer's NPI was issued on August 29, 2005.
What is John Oppenheimer's provider type?
John Oppenheimer is registered as an Individual Provider under CMS NPI Type 1.