Mark Siegelheim, M.D

ActiveIndividual ProviderInternal Medicine
NPI issued: June 14, 2005

Quick Facts

NPI Number
1235134602
TypeIndividual
StatusActive
SpecialtyInternal Medicine
Taxonomy207R00000X — Internal Medicine
Phone
(631) 665-5074
StateNY

NPI Validation Status: Verified

✅Valid 10-digit NPI number (1235134602)
✅Active status confirmed
✅Verified by CMS NPPES Registry
✅HIPAA compliant identifier
✅Enumeration date on file (June 14, 2005)
Data source: CMS NPPES

Provider Overview

MARK SIEGELHEIM, M.D is a Internal Medicine provider based in Bay Shore, NY who has been registered with CMS since 2005. This NPI is currently Active under CMS NPPES registry.

Provider Details

NPI Number1235134602
Provider TypeIndividual Provider
GenderMale
CredentialM.D
StatusActive
Enumeration DateJune 14, 2005

Practice Location

CityBay Shore
StateNY
ZIP Code11706-5300
Phone(631) 665-5074

Specialties & Licenses

★ Primary
SpecialtyInternal Medicine
Taxonomy Code207R00000X
License StateNY

Mailing Address

CityBay Shore
StateNY
ZIP Code11706-5300
Phone(631) 665-5074
Same as practice location

How to Use This NPI

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For Insurance Billing

Use NPI 1235134602 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.

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For Credentialing

Reference NPI 1235134602for 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 1235134602 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

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People Also Ask

What is Mark Siegelheim's NPI number?
Mark Siegelheim's NPI number is 1235134602, a unique 10-digit identifier issued by the Centers for Medicare & Medicaid Services (CMS).
Is Mark Siegelheim's NPI currently active?
Yes, Mark Siegelheim's NPI status is Active as of the latest CMS NPPES database updates.
What does Mark Siegelheim specialize in?
Mark Siegelheim specializes in Internal Medicine. The healthcare taxonomy code associated with this specialty is 207R00000X.
Where does Mark Siegelheim practice?
Mark Siegelheim practices in Bay Shore, NY 11706-5300.
When was Mark Siegelheim's NPI issued?
Mark Siegelheim's NPI was issued on June 14, 2005.
What is Mark Siegelheim's provider type?
Mark Siegelheim is registered as an Individual Provider under CMS NPI Type 1.