Katherine E. Williams, DO
Family Medicine Physician · Jacksonville, FL
Katherine E. Williams, DO is a family medicine physician with a practice address in Jacksonville, Florida, and NPI 1619538733, issued on Jun 28, 2019. Check the license (Florida OS17758, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Katherine E. Williams
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OS17758 FL
Self-reported in NPPES; status is on the state search - Practice location
- 4844 Deer Lake Dr W Ste 1, Jacksonville, FL 32246
- Phone
- (904) 738-8690
- Enumerated
- Jun 28, 2019
- Record last updated
- Mar 16, 2026
- Fax
- (904) 390-7426
- Medicare enrollment
- Enrolled (PECOS I20250516000725); accepts Medicare assignment
- Medical or professional school
- Campbell Univ School Of Osteopathic Medicine, 2019
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 9,399 in Florida → Look up another NPI →
Also registered at 4844 Deer Lake Dr W Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Verniecea Harris, MDFamily Medicine Physician1104443126
- Lauren Prostrollo, DOFamily Medicine Physician1619546454
- Meredith Riddle, M.D.Family Medicine Physician1265870778
- Mallory Whitley, MDFamily Medicine Physician1861913592
Verify Katherine E. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license OS17758Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average family medicine physician in 2024
2,878 Medicare Part D claims for 233 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Atorvastatin Calcium201 claims
- Amlodipine Besylate142 claims
- Levothyroxine Sodium139 claims
- Losartan Potassium120 claims
- Rosuvastatin Calcium100 claims
- Lisinopril88 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.
The MIPS final score for 2023 (Medicare payment program): 91.6 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: $87.03
4 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Anchorage Neighborhood Health Center IncAnchorage, AK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine E. Williams among 9,399 family medicine physician records in Florida
Katherine E. Williams, DO is one of 9,399 family medicine physician records with a practice address in Florida. 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 2019, is newer than 84% of them.
- NPI issued2019 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2019 · median 2004 among the 5,504 with a school on file
- Record last updated2026 · 51% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
605 family medicine physician records list a practice address in Jacksonville
They are 605 of the 24,194 NPPES records with a practice address in Jacksonville, and 9,399 family medicine physician records in Florida.
All 9,399 in Florida → Every provider in Jacksonville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Cesar Aguirre, M.D.Jacksonville, FL 322461528367117
- Irina Boldt, M.D.Jacksonville, FL 322461225471873
- Christina Corpus-Piepenbrink, DOJacksonville, FL 322461285377481
- Verniecea Harris, MDJacksonville, FL 322461104443126
- Katherine McMullan, M.D.Jacksonville, FL 322461881952711
- John Montgomery, MDJacksonville, FL 322461851591853
- Lee Peck, MDJacksonville, FL 322461619959749
- Lauren Prostrollo, DOJacksonville, FL 322461619546454
Common questions
What is Katherine E. Williams, DO's NPI number?
Katherine E. Williams, DO's National Provider Identifier (NPI) is 1619538733, issued on Jun 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Katherine E. Williams, DO located?
The NPPES record lists a practice address at 4844 Deer Lake Dr W Ste 1, Jacksonville, FL, 32246. Phone: (904) 738-8690. Providers update this record themselves, so call before visiting.
How can I verify Katherine E. Williams, DO's license?
NPPES lists Florida license number OS17758, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katherine E. Williams, DO prescribe under Medicare Part D?
In 2024, Katherine E. Williams, DO had 2,878 Medicare Part D claims for 233 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Katherine E. Williams, DO's MIPS final score?
The 2023 MIPS final score is 91.6 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.