Nyssa Matson-Keats, L.I.C.S.W
Clinical Social Worker · Lexington, MA
Nyssa Matson-Keats, L.I.C.S.W is a clinical social worker with a practice address in Lexington, Massachusetts, and NPI 1407018146, issued on Jun 25, 2008. Check the license (Massachusetts 111996, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nyssa Matson-Keats
- Credential
- L.I.C.S.W
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 111996 MA
Self-reported in NPPES; status is on the state search - Practice location
- 35 Bedford St, Lexington, MA 02420
- Phone
- (781) 861-6767
- Enumerated
- Jun 25, 2008
- Record last updated
- Jun 25, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160826001973); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 17,815 in Massachusetts → Look up another NPI →
Also registered at 35 Bedford St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Alperin, LICSWClinical Social Worker1356482277
- Wayne Brown, M.D., M.SC., M.P.H.Internal Medicine Physician1831136555
- Gregory Caldwell, DMD, MDOral and Maxillofacial Surgery (Dentist)1992795926
- Jennifer Coplon, LICSWMental Health Counselor1114095619
- Barry Cunha, D.D.S.General Practice Dentistry1427069608
- Stavroyla Hanzis-Pantazopoulos, P.T.Physical Therapist1811924046
Verify Nyssa Matson-Keats in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 111996Check 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
- President And Fellows OF Harvard CollegeCambridge, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nyssa Matson-Keats among 17,815 clinical social worker records in Massachusetts
Nyssa Matson-Keats, L.I.C.S.W is one of 17,815 clinical social worker records with a practice address in Massachusetts. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 30% of them.
- NPI issued2008 · 30% of these records are older, 66% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated1990 · median 2004 among the 3,059 with a school on file
- Record last updated2008 · 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 1041C0700X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
156 clinical social worker records list a practice address in Lexington
They are 156 of the 1,467 NPPES records with a practice address in Lexington, and 17,815 clinical social worker records in Massachusetts.
All 17,815 in Massachusetts → Every provider in Lexington → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Miriam Adams, LICSWLexington, MA 024201093804502
- Jane Adolph, LICSWLexington, MA 024201396835476
- Joseph Deangelis, LICSWLexington, MA 024201114995289
- Mimi Dohan, LICSWLexington, MA 024201255390316
- Lynne Feldman, LICSWLexington, MA 024201255352639
- Wendy Gabrenya, LICSWLexington, MA 024201356422331
- Re Becca Kosterman, LICSWLexington, MA 024201437186830
- Robert Lawton, MSWLexington, MA 024201093754616
Common questions
What is Nyssa Matson-Keats, L.I.C.S.W's NPI number?
Nyssa Matson-Keats, L.I.C.S.W's National Provider Identifier (NPI) is 1407018146, issued on Jun 25, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Nyssa Matson-Keats, L.I.C.S.W located?
The NPPES record lists a practice address at 35 Bedford St, Lexington, MA, 02420. Phone: (781) 861-6767. Providers update this record themselves, so call before visiting.
How can I verify Nyssa Matson-Keats, L.I.C.S.W's license?
NPPES lists Massachusetts license number 111996, 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.