Lena Lax, NP
NPI 1417406976 · Nurse Practitioner · Cambridge, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lena Lax, NP is a Nurse Practitioner provider in Cambridge, MA (NPI 1417406976).
Provider details
- NPI number
- 1417406976
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2298221 (MA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Mailing address
Additional practice locations (2)
- 559 Clay St Ste 200San Francisco, CA 94111-3029Phone: (415) 644-5265Fax: (415) 291-0489
- 185 Central StConcord, MA 01742-2909Phone: (978) 505-2316
Registry dates
- Enumerated
- 2016-09-26
- Last updated
- 2025-03-17
- Certified
- 2025-03-17
Frequently asked questions
- What is Lena Lax's NPI number?
- Lena Lax's National Provider Identifier (NPI) is 1417406976, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lena Lax's specialty?
- Lena Lax is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lena Lax located?
- Lena Lax's practice location on file with NPPES is 822 Somerville Ave, Cambridge, MA 02140.
- What is Lena Lax's phone number?
- The practice phone number listed in the NPPES registry for Lena Lax is (888) 663-6331.
- Does Lena Lax accept Medicare?
- Lena Lax is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lena Lax's NPI active?
- Yes — Lena Lax's NPI (1417406976) is active in the NPPES registry as of the last update on 2025-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.