Ellen Slawsby, PHD
Psychologist · Chestnut Hill, MA
Ellen Slawsby, PHD is a psychologist with a practice address in Chestnut Hill, Massachusetts, and NPI 1477666329, issued on Aug 16, 2006. Check the license (Massachusetts 7159, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ellen Slawsby
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 7159 MA
Self-reported in NPPES; status is on the state search - Practice location
- 824 Boylston Street, Chestnut Hill, MA 02467
- Phone
- (617) 991-0102
- Enumerated
- Aug 16, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 0501891 MA
- Medicare enrollment
- Enrolled (PECOS I20061018000238); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 2,367 in Massachusetts → Look up another NPI →
Also registered at 824 Boylston Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ellen Slawsby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 7159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Slawsby among 2,367 psychologist records in Massachusetts
Ellen Slawsby, PHD is one of 2,367 psychologist records with a practice address in Massachusetts. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 71% newer
- In a Medicare fileYes · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated1995 · median 1997 among the 487 with a school on file
- Record last updated2007 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 psychologist records list a practice address in Chestnut Hill
They are 19 of the 772 NPPES records with a practice address in Chestnut Hill, and 2,367 psychologist records in Massachusetts.
All 2,367 in Massachusetts → Every provider in Chestnut Hill → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Fred Busch, PH.D.Chestnut Hill, MA 024671154682631
- Lois Eichler, PH.DChestnut Hill, MA 024671972721579
- John Friedman, ED.D.Chestnut Hill, MA 024671205977956
- Thomas McGuinness, PH.D.Chestnut Hill, MA 024671912053604
- Christine Merkle, PH.D.Chestnut Hill, MA 024671225193113
- Jane MetcalfChestnut Hill, MA 024671548626518
- Mark O'Connell, PH.D.Chestnut Hill, MA 024671932364908
- Sarah Piontkowski, PH.D.Chestnut Hill, MA 024671811344120
Common questions
What is Ellen Slawsby, PHD's NPI number?
Ellen Slawsby, PHD's National Provider Identifier (NPI) is 1477666329, issued on Aug 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Slawsby, PHD located?
The NPPES record lists a practice address at 824 Boylston Street, Chestnut Hill, MA, 02467. Phone: (617) 991-0102. Providers update this record themselves, so call before visiting.
How can I verify Ellen Slawsby, PHD's license?
NPPES lists Massachusetts license number 7159, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.