What is Jill Sieverts's NPI number?

Jill Sieverts's National Provider Identifier (NPI) is 1457455883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Jill Sieverts's specialty?

Jill Sieverts is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).

Where is Jill Sieverts located?

Jill Sieverts's practice location on file with NPPES is 70 West Allendale Avenue, Allendale, NJ 07401.

What is Jill Sieverts's phone number?

The practice phone number listed in the NPPES registry for Jill Sieverts is (201) 934-2999.

Is Jill Sieverts's NPI active?

Yes — Jill Sieverts's NPI (1457455883) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Jill Sieverts, LMFT

NPI 1457455883 · Marriage & Family Therapist · Allendale, NJ

Jill Sieverts, LMFT is a Marriage & Family Therapist provider in Allendale, NJ (NPI 1457455883).

Provider details

NPI number: 1457455883
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Credential: LMFT
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000X
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(84/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

70 West Allendale Avenue

Suite a

Allendale, NJ 07401

Phone: (201) 934-2999

Street-level locationGet directions

More NJ providers

Mailing address

Po Box 309

Wyckoff, NJ 07481

Enumerated: 2006-09-07
Last updated: 2007-07-08

Frequently asked questions

What is Jill Sieverts's NPI number?: Jill Sieverts's National Provider Identifier (NPI) is 1457455883, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Jill Sieverts's specialty?: Jill Sieverts is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
Where is Jill Sieverts located?: Jill Sieverts's practice location on file with NPPES is 70 West Allendale Avenue, Allendale, NJ 07401.
What is Jill Sieverts's phone number?: The practice phone number listed in the NPPES registry for Jill Sieverts is (201) 934-2999.
Is Jill Sieverts's NPI active?: Yes — Jill Sieverts's NPI (1457455883) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.