Active NPIIndividual providerSole proprietor

Blaire A Siefken, FNP

Nurse Practitioner, Family in Nantucket, Massachusetts

NPI Number1073861050
Practice location
57 Prospect St Unit 1, Nantucket, MA 02554-4396
Fax
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Last updated
October 30, 2026

Blaire A Siefken is a Nurse Practitioner, Family based in Nantucket, MA. Blaire A Siefken practices in Nantucket, MA and has the professional credentials of FNP. The NPI Number for Blaire A Siefken is 1073861050 and holds a License No. CNP151071 (ME). The current practice location address for Blaire A Siefken is 57 Prospect St Unit 1, Nantucket, MA 02554-4396 and can be reached out via phone at 508-825-8100.

Provider Profile Details

NPI Number
1073861050
Provider Name
Blaire A Siefken
Credential
FNP
Provider Entity Type
Individual
Gender
Female
Address
57 Prospect St Unit 1, Nantucket, MA 02554-4396
Phone Number
508-825-8100
Primary Taxonomy
Nurse Practitioner, Family · 363LF0000X
Sole Proprietor
Yes
Provider Enumeration Date
August 22, 2012
Last Update Date
October 30, 2026
Certification Date
October 30, 2026
NPI Status
Active

Provider Business Practice Location Address Details

Address
57 Prospect St Unit 1
Nantucket, MA 02554-4396
Zip
02554-4396
Phone Number
508-825-8100
Nantucket, MA 02554Get directions →

Provider Business Mailing Address Details

Address
2 Zephyr Ln
Calais, ME 04619-4155
City
Calais
State
ME
Zip
04619-4155
Phone Number
207-454-7521
Fax Number
207-454-3616

License Information

License Number
CNP151071
License State
ME
Taxonomy
Nurse Practitioner, Family · 363LF0000X · Primary

Legacy Identifiers

IdentifierTypeStateIssuer
No legacy identifiers (Medicaid, Medicare or plan IDs) are on file for this provider.

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Frequently Asked Questions

What is the NPI number of Blaire A Siefken, FNP?

The NPI number of Blaire A Siefken, FNP is 1073861050. It was assigned on August 22, 2012 and is currently active in the NPPES registry.

What is the specialty of Blaire A Siefken, FNP?

Blaire A Siefken, FNP is registered under the primary taxonomy Nurse Practitioner, Family (code 363LF0000X), licensed in ME under license number CNP151071.

Where does Blaire A Siefken, FNP practice?

The practice location is 57 Prospect St Unit 1, Nantucket, MA 02554-4396. The office can be reached at 508-825-8100 (phone).

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). It is used in HIPAA standard transactions.

How do I verify this NPI record?

This record is sourced from the public NPPES NPI Registry maintained by CMS. You can confirm it by searching NPI 1073861050 directly on the NPPES registry website.

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