Stephen Lo
NPI 1851030944 · Psychologist · Boston, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Lo is a Psychologist provider in Boston, MA (NPI 1851030944).
Provider details
- NPI number
- 1851030944
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 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 (1)
- 1645 W Jackson BlvdChicago, IL 60612-3276Phone: (312) 563-6637
Registry dates
- Enumerated
- 2022-05-27
- Last updated
- 2023-11-17
- Certified
- 2023-11-17
Frequently asked questions
- What is Stephen Lo's NPI number?
- Stephen Lo's National Provider Identifier (NPI) is 1851030944, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Lo's specialty?
- Stephen Lo is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephen Lo located?
- Stephen Lo's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Stephen Lo's phone number?
- The practice phone number listed in the NPPES registry for Stephen Lo is (866) 602-1448.
- Does Stephen Lo accept Medicare?
- Stephen Lo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Lo's NPI active?
- Yes — Stephen Lo's NPI (1851030944) is active in the NPPES registry as of the last update on 2023-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.