Jennifer London Mast
Clinical Social Worker · Stow, MA
Jennifer London Mast is a clinical social worker with a practice address in Stow, Massachusetts, and NPI 1346722691, issued on Sep 4, 2018. Check the license (Massachusetts 111896-SW-LICSW, as entered in NPPES) with the Massachusetts board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Jennifer London Mast
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 111896-SW-LICSW MA
Self-reported in NPPES; status is on the state search - Practice location
- 26 Kettell Plain RD, Stow, MA 01775
- Phone
- (617) 501-6139
- Enumerated
- Sep 4, 2018
- Record last updated
- Sep 4, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Jennifer London Mast in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 111896-SW-LICSWCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8 clinical social worker records list a practice address in Stow
They are 8 of the 59 NPPES records with a practice address in Stow, and 17,815 clinical social worker records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8 in Stow → All 17,815 in Massachusetts → Every provider in Stow →
Other clinical social worker records in Massachusetts
- Andrew Aaron, LICSWNew Bedford, MA1053477885
- Cynthia AaronFall River, MA1407258676
- Emanuel Aaron, LICSW,LADCI, CADCII,Orange, MA1134475817
- Karla Abad, LCSWLynn, MA1598577470
- Amy Abair, LICSWBoston, MA1972821858
- Nicole Abair, LCSWLexington, MA1386590859
- Stephanie Abate, LICSWAmherst, MA1669580973
- Lynn Abbey, LICSWFall River, MA1437189248
- Bernard Abbot, MSWBoston, MA1861913188
- Amanda Abbott, CNM, LCSWCambridge, MA1821358284
Common questions
What is Jennifer London Mast's NPI number?
Jennifer London Mast's National Provider Identifier (NPI) is 1346722691, issued on Sep 4, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer London Mast located?
The NPPES record lists a practice address at 26 Kettell Plain RD, Stow, MA, 01775. Phone: (617) 501-6139. Providers update this record themselves, so call before visiting.
How can I verify Jennifer London Mast's license?
NPPES lists Massachusetts license number 111896-SW-LICSW, 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. 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.