Gregory Warren, MD

ActiveIndividual ProviderHematology & Oncology
NPI issued: January 9, 2006

Quick Facts

NPI Number
1154309243
TypeIndividual
StatusActive
SpecialtyHematology & Oncology
Taxonomy207RH0003X — Hematology & Oncology
Phone
(440) 816-6051
StateOH

NPI Validation Status: Verified

✅Valid 10-digit NPI number (1154309243)
✅Active status confirmed
✅Verified by CMS NPPES Registry
✅HIPAA compliant identifier
✅Enumeration date on file (January 9, 2006)
Data source: CMS NPPES

Provider Overview

GREGORY WARREN, MD is a Hematology & Oncology provider based in Cleveland, OH who has been registered with CMS since 2006. They are affiliated with Southwest General Medical Group, Inc. This NPI is currently Active under CMS NPPES registry.

Provider Details

NPI Number1154309243
Provider TypeIndividual Provider
GenderMale
CredentialMD
StatusActive
Enumeration DateJanuary 9, 2006

Practice Location

CityCleveland
StateOH
ZIP Code44130-3417
Phone(440) 816-6051

Specialties & Licenses

★ Primary
SpecialtyHematology & Oncology
Taxonomy Code207RH0003X
License StateOH

Mailing Address

CityCleveland
StateOH
ZIP Code44130-3417
Phone(440) 816-6051
Same as practice location

Hospital & Organization Affiliations

🏢

Southwest General Medical Group, Inc

📍 Cleveland, OH

Hospital NPIY→

How to Use This NPI

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For Insurance Billing

Use NPI 1154309243 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 1154309243for provider credential verification. Hospital systems, state licensing boards, and CAQH directories query this number to verify the provider's active clinical status.

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For Patients

Share NPI 1154309243 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 Hematology & Oncology

Specialists in Hematology & Oncology provide expert clinical care within their specific domain, focusing on the diagnosis, treatment, and management of conditions relevant to their field of practice.

Browse all Hematology & Oncologyproviders →
📊
14,223
Hematology & Oncology Providers in the US

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People Also Ask

What is Gregory Warren's NPI number?
Gregory Warren's NPI number is 1154309243, a unique 10-digit identifier issued by the Centers for Medicare & Medicaid Services (CMS).
Is Gregory Warren's NPI currently active?
Yes, Gregory Warren's NPI status is Active as of the latest CMS NPPES database updates.
What does Gregory Warren specialize in?
Gregory Warren specializes in Hematology & Oncology. The healthcare taxonomy code associated with this specialty is 207RH0003X.
Where does Gregory Warren practice?
Gregory Warren practices in Cleveland, OH 44130-3417.
When was Gregory Warren's NPI issued?
Gregory Warren's NPI was issued on January 9, 2006.
What is Gregory Warren's provider type?
Gregory Warren is registered as an Individual Provider under CMS NPI Type 1.