Katherine S. Williams, MD
Family Medicine Physician · Providence, RI
Katherine S. Williams, MD is a family medicine physician with a practice address in Providence, Rhode Island, and NPI 1154385979, issued on Apr 17, 2006. Check the license (Rhode Island MD10394, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Katherine S. Williams
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD10394 RI
Self-reported in NPPES; status is on the state search - Practice location
- 355 Prairie Ave, Providence, RI 02905
- Phone
- (401) 415-9000
- Enumerated
- Apr 17, 2006
- Record last updated
- Apr 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (401) 444-0427
- Medicare enrollment
- Enrolled (PECOS I20040326001142); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1997
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 475 in Rhode Island → Look up another NPI →
Also registered at 355 Prairie Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diana Afonso, PAPhysician Assistant1750690392
- Aliia Agliullina, MDPediatrics Physician1063116416
- Byron AlexPediatrics Physician1114212404
- Myah Audette, NPFamily Nurse Practitioner1841656204
- Stephanie Avila, CNM, NP-CAdvanced Practice Midwife1184643363
- Ingrid AyalaCounselor1386115095
Verify Katherine S. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
Search for license MD10394Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average family medicine physician in 2024
63 Medicare Part D claims for 48 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- The Providence Community Health Centers Inc.Providence, RI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine S. Williams among 475 family medicine physician records in Rhode Island
Katherine S. Williams, MD is one of 475 family medicine physician records with a practice address in Rhode Island. 76% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 60% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1997 · median 2008 among the 282 with a school on file
- Record last updated2021 · 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 207Q00000X and a Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Rhode Island
There are 475 family medicine physician records in Rhode Island.
All 475 in Rhode Island → Every provider in Providence → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Tracey Cohen, M.D.Providence, RI 029051760402903
- Frank Fallon, D.O.Cranston, RI 029051609861053
- Zein Farhat, MDProvidence, RI 029051871955369
- Noelle Lee, DOProvidence, RI 029051548468119
- Sheldon Malcolm, DOProvidence, RI 029051104054261
- Kathleen O'Heelan, DOProvidence, RI 029051174513451
- Regina Plover, MDCranston, RI 029051881625788
- Courtney Scanlon, MDProvidence, RI 029051932635562
Common questions
What is Katherine S. Williams, MD's NPI number?
Katherine S. Williams, MD's National Provider Identifier (NPI) is 1154385979, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine S. Williams, MD located?
The NPPES record lists a practice address at 355 Prairie Ave, Providence, RI, 02905. Phone: (401) 415-9000. Providers update this record themselves, so call before visiting.
How can I verify Katherine S. Williams, MD's license?
NPPES lists Rhode Island license number MD10394, as entered by the provider. Search the Rhode Island Board of Medical Licensure and Discipline at https://healthri.mylicense.com/Verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine S. Williams, MD prescribe under Medicare Part D?
In 2024, Katherine S. Williams, MD had 63 Medicare Part D claims for 48 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions 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.