IndividualActive
Ellen Siegel, PSY.D.
NPI 1821168501 · Psychologist · Cambridge, MA
Ellen Siegel, PSY.D. is a Psychologist provider in Cambridge, MA (NPI 1821168501).
Provider details
- NPI number
- 1821168501
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 7739 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
187 Mount Auburn St
Cambridge, MA 02138-4863
Phone: (617) 826-9450
Fax: (617) 722-4954
Street-level locationGet directions
Mailing address
122 Nehoiden Rd
Waban, MA 02468-1926
Registry dates
- Enumerated
- 2006-11-09
- Last updated
- 2010-11-02
Frequently asked questions
- What is Ellen Siegel's NPI number?
- Ellen Siegel's National Provider Identifier (NPI) is 1821168501, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Siegel's specialty?
- Ellen Siegel is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Ellen Siegel located?
- Ellen Siegel's practice location on file with NPPES is 187 Mount Auburn St, Cambridge, MA 02138-4863.
- What is Ellen Siegel's phone number?
- The practice phone number listed in the NPPES registry for Ellen Siegel is (617) 826-9450.
- Is Ellen Siegel's NPI active?
- Yes — Ellen Siegel's NPI (1821168501) is active in the NPPES registry as of the last update on 2010-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.