What is Lydia Waldo's NPI number?

Lydia Waldo's National Provider Identifier (NPI) is 1366396145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Lydia Waldo's specialty?

Lydia Waldo is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Lydia Waldo located?

Lydia Waldo's practice location on file with NPPES is 330 Mount Auburn St, Cambridge, MA 02138-5597.

What is Lydia Waldo's phone number?

The practice phone number listed in the NPPES registry for Lydia Waldo is (617) 499-5050.

Is Lydia Waldo's NPI active?

Yes — Lydia Waldo's NPI (1366396145) is active in the NPPES registry as of the last update on 2026-02-26.

IndividualActive

Lydia Waldo, LCSW

NPI 1366396145 · Clinical Social Worker · Cambridge, MA

Lydia Waldo, LCSW is a Clinical Social Worker provider in Cambridge, MA (NPI 1366396145).

Provider details

NPI number: 1366396145
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: LCSW
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700X
Behavioral Health & Social Service Providers

Profile Score

Basic profile(46/100 index)

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

Registry tenure38% of score
Under 1 yr in 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

330 Mount Auburn St

Cambridge, MA 02138-5597

Phone: (617) 499-5050

Street-level locationGet directions

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Mailing address