Allison Williams
Physician Assistant · Cambridge, MA
Allison Williams is a physician assistant with a practice address in Cambridge, Massachusetts, and NPI 1265890529, issued on Feb 2, 2016. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Allison Williams
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 9089 GA
Self-reported in NPPES; status is on the state search - Practice location
- 1493 Cambridge St, Cambridge, MA 02139
- Phone
- (617) 665-1000
- Enumerated
- Feb 2, 2016
- Record last updated
- May 31, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190909002135); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 1493 Cambridge St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Omar Abbas, MDStudent in an Organized Health Care Education/Training Program1225728025
- Nawyaab Abbasi, DOStudent in an Organized Health Care Education/Training Program1215875364
- Flannery AbbeySocial Worker1508604273
- Rana AbdallahSocial Worker1689220204
- Khaleel Abdul-Jabbaar, PT, DPTOrthopedic Physical Therapist1780295717
- Adri Abou-Bakr, MDStudent in an Organized Health Care Education/Training Program1770421844
Verify Allison Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck 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 MIPS final score for 2023 (Medicare payment program): 92.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $41.23
1 payment: food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- The Emory Clinic IncAtlanta, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allison Williams among 4,713 physician assistant records in Massachusetts
Allison Williams is one of 4,713 physician assistant records with a practice address in Massachusetts. 78% 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 36% of them.
- NPI issued2016 · 36% of these records are older, 60% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2016 · median 2019 among the 3,217 with a school on file
- Record last updated2019 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
99 physician assistant records list a practice address in Cambridge
They are 99 of the 5,145 NPPES records with a practice address in Cambridge, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Cambridge → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Elvira Aronzon, PA-CCambridge, MA 021391851358279
- Marita Barrett, PA-CCambridge, MA 021391801941323
- Mark Brady, PA-CCambridge, MA 021391649349994
- Allisyn Brady, PACambridge, MA 021391275686750
- Carla Dupont, PA-CCambridge, MA 021391053489096
- Catherine Faulkner, PACambridge, MA 021391811040389
- Kathleen Goreham, PA-CCambridge, MA 021391750410015
- Kenrith Plummer, PACambridge, MA 021391306867742
Common questions
What is Allison Williams's NPI number?
Allison Williams's National Provider Identifier (NPI) is 1265890529, issued on Feb 2, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Allison Williams located?
The NPPES record lists a practice address at 1493 Cambridge St, Cambridge, MA, 02139. Phone: (617) 665-1000. Providers update this record themselves, so call before visiting.
How can I verify Allison Williams's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
What is Allison Williams's MIPS final score?
The 2023 MIPS final score is 92.3 of 100. 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.