William Mitchell Lewitt, NURSE PRACTITIONER
Family Nurse Practitioner · Nashua, NH
William Mitchell Lewitt, NURSE PRACTITIONER is a family nurse practitioner with a practice address in Nashua, New Hampshire, and NPI 1215389366, issued on Jul 12, 2016. Check the license (New Hampshire 073326-23, as entered in NPPES) with the New Hampshire board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Mitchell Lewitt
- Credential
- NURSE PRACTITIONER
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 073326-23 NH
Self-reported in NPPES; status is on the state search - Practice location
- 166 Kinsley St Ste 101, Nashua, NH 03060
- Phone
- (603) 889-4131
- Enumerated
- Jul 12, 2016
- Record last updated
- Apr 22, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (603) 889-6419
- Medicare enrollment
- Enrolled (PECOS I20190522001254); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 1,377 in New Hampshire → Look up another NPI →
Also registered at 166 Kinsley St Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lindsey Britten, PA-CPhysician Assistant1821487125
- Christopher Daigle, M.D.Pulmonary Disease Physician1861503567
- Margaret Flynn, MDEndocrinology, Diabetes & Metabolism Physician1821094491
- Mikhail Signalov, D.O.Endocrinology, Diabetes & Metabolism Physician1316138910
- Elizabeth Jane Spatola, MDEndocrinology, Diabetes & Metabolism Physician1154368264
Verify William Mitchell Lewitt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
Search for license 073326-23Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 29.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Betternow PLLCAmherst, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Mitchell Lewitt among 1,377 family nurse practitioner records in New Hampshire
William Mitchell Lewitt, NURSE PRACTITIONER is one of 1,377 family nurse practitioner records with a practice address in New Hampshire. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 42% of them.
- NPI issued2016 · 42% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2018 among the 901 with a school on file
- Record last updated2019 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
120 family nurse practitioner records list a practice address in Nashua
They are 120 of the 3,140 NPPES records with a practice address in Nashua, and 1,377 family nurse practitioner records in New Hampshire.
All 1,377 in New Hampshire → Every provider in Nashua → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Lisa Bradshaw, NPNashua, NH 030601104906429
- Geraldine Colburn, NPNashua, NH 030601477526325
- Dorothy Doran, ARNPNashua, NH 030601083701346
- Lori Fox, ARNPNashua, NH 030601407911001
- Julie Grimstad, N.P.Nashua, NH 030601245462027
- Samborn Hoey, NP-CNashua, NH 030601245476506
- Amanda Ponti, FNP-CNashua, NH 030601508056383
- Casey Poulios, APRNNashua, NH 030601134145634
Common questions
What is William Mitchell Lewitt, NURSE PRACTITIONER's NPI number?
William Mitchell Lewitt, NURSE PRACTITIONER's National Provider Identifier (NPI) is 1215389366, issued on Jul 12, 2016. An NPI identifies a provider in billing; it is not a license.
Where is William Mitchell Lewitt, NURSE PRACTITIONER located?
The NPPES record lists a practice address at 166 Kinsley St Ste 101, Nashua, NH, 03060. Phone: (603) 889-4131. Providers update this record themselves, so call before visiting.
How can I verify William Mitchell Lewitt, NURSE PRACTITIONER's license?
NPPES lists New Hampshire license number 073326-23, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.
What is William Mitchell Lewitt, NURSE PRACTITIONER's MIPS final score?
The 2023 MIPS final score is 29.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.