What is Hannah Olson's NPI number?

Hannah Olson's National Provider Identifier (NPI) is 1598558504, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Hannah Olson's specialty?

Hannah Olson is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).

Where is Hannah Olson located?

Hannah Olson's practice location on file with NPPES is 117 Summer St, Somerville, MA 02143-2706.

What is Hannah Olson's phone number?

The practice phone number listed in the NPPES registry for Hannah Olson is (857) 378-0266.

Is Hannah Olson's NPI active?

Yes — Hannah Olson's NPI (1598558504) is active in the NPPES registry as of the last update on 2025-05-23.

IndividualActive

Hannah Olson

NPI 1598558504 · Mental Health Counselor · Somerville, MA

Hannah Olson is a Mental Health Counselor provider in Somerville, MA (NPI 1598558504).

Provider details

NPI number: 1598558504
Entity type: Individual
Primary specialty: Mental Health CounselorBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Mental Health CounselorPrimary101YM0800X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(48/100 index)

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

Registry tenure38% of score
1 yr 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

117 Summer St

Somerville, MA 02143-2706

Phone: (857) 378-0266

Street-level locationGet directions

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Mailing address