Porter Square Eye Associates Inc
NPI 1356660393 · Optometrist · Cambridge, MA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Porter Square Eye Associates Inc is a Optometrist organization in Cambridge, MA (NPI 1356660393).
Provider details
- NPI number
- 1356660393
- Entity type
- Organization
- Primary specialty
- OptometristEye and Vision Services Providers
- Organization subpart
- No
- Authorized official
- Crystal Klaahsen, President(617) 864-3147
- License
- 4567 (MA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% 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
Mailing address
Registry dates
- Enumerated
- 2010-05-28
- Last updated
- 2024-12-12
- Certified
- 2024-12-12
Frequently asked questions
- What is Porter Square Eye Associates Inc's NPI number?
- Porter Square Eye Associates Inc's National Provider Identifier (NPI) is 1356660393, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Porter Square Eye Associates Inc?
- Porter Square Eye Associates Inc is classified in the NPPES registry as Optometrist (Eye and Vision Services Providers).
- Where is Porter Square Eye Associates Inc located?
- Porter Square Eye Associates Inc's practice location on file with NPPES is 2067 Massachusetts Ave, Cambridge, MA 02140-1340.
- What is Porter Square Eye Associates Inc's phone number?
- The practice phone number listed in the NPPES registry for Porter Square Eye Associates Inc is (617) 864-3147.
- Does Porter Square Eye Associates Inc accept Medicare?
- Porter Square Eye Associates Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Porter Square Eye Associates Inc?
- The authorized official listed on Porter Square Eye Associates Inc's NPPES record is Crystal Klaahsen, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Porter Square Eye Associates Inc's NPI active?
- Yes — Porter Square Eye Associates Inc's NPI (1356660393) is active in the NPPES registry as of the last update on 2024-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.