Mary A. Williams, CNP
Family Nurse Practitioner · Hamilton, OH
Mary A. Williams, CNP is a family nurse practitioner with a practice address in Hamilton, Ohio, and NPI 1841545993, issued on Jul 16, 2012. Check the license (Ohio COA13508NP, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary A. Williams
- Credential
- CNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- COA13508NP OH
Self-reported in NPPES; status is on the state search - Practice location
- 855 Eaton Ave, Hamilton, OH 45013
- Phone
- (513) 892-9222
- Enumerated
- Jul 16, 2012
- Record last updated
- Dec 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (513) 892-9009
- Medicaid ID
- 0068333 OH
- Medicare enrollment
- Enrolled (PECOS I20120824000190); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 9,647 in Ohio → Look up another NPI →
Also registered at 855 Eaton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Winters, D.O.Internal Medicine Physician1235102591
Verify Mary A. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Ohio board licenses this profession
Search for license COA13508NPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.9 times the Medicare Part D claims of the average family nurse practitioner in 2024
8,949 Medicare Part D claims for 680 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 67 claims were for opioids.
Most prescribed
- Amlodipine Besylate472 claims
- Atorvastatin Calcium459 claims
- Lisinopril349 claims
- Losartan Potassium307 claims
- Levothyroxine Sodium271 claims
- Omeprazole246 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 practice group's MIPS final score for 2023 (Medicare payment program): 86.5 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 2 group practices
- J B Winters DO LLCHamilton, OH
- Oxford Physical Therapy And RehabilitationMason, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary A. Williams among 9,647 family nurse practitioner records in Ohio
Mary A. Williams, CNP is one of 9,647 family nurse practitioner records with a practice address in Ohio. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 15% of them.
- NPI issued2012 · 15% of these records are older, 82% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2012 · median 2018 among the 6,366 with a school on file
- Record last updated2012 · 40% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
68 family nurse practitioner records list a practice address in Hamilton
They are 68 of the 2,515 NPPES records with a practice address in Hamilton, and 9,647 family nurse practitioner records in Ohio.
All 9,647 in Ohio → Every provider in Hamilton → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Vickie Burch, APNHamilton, OH 450131518100353
- Shari Gabbard, CNPHamilton, OH 450131932119096
- Daniel GallagherHamilton, OH 450131033583976
- Lisa Goins, PHD APRN FNP-BC RMTHamilton, OH 450131124373816
- Madonna Guggenbiller, NPHamilton, OH 450131942395132
- Kimberly Haugabook, RN,BSN,MSN, NP-CHamilton, OH 450131437474897
- Antonia JacksonHamilton, OH 450131356763593
- Karen Keller, FNP-BCHamilton, OH 450131265784078
Common questions
What is Mary A. Williams, CNP's NPI number?
Mary A. Williams, CNP's National Provider Identifier (NPI) is 1841545993, issued on Jul 16, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mary A. Williams, CNP located?
The NPPES record lists a practice address at 855 Eaton Ave, Hamilton, OH, 45013. Phone: (513) 892-9222. Providers update this record themselves, so call before visiting.
How can I verify Mary A. Williams, CNP's license?
NPPES lists Ohio license number COA13508NP, as entered by the provider. Search the Ohio board that licenses this profession; the NPPES record confirms identity only.
How much does Mary A. Williams, CNP prescribe under Medicare Part D?
In 2024, Mary A. Williams, CNP had 8,949 Medicare Part D claims for 680 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Mary A. Williams, CNP's MIPS final score?
The 2023 MIPS final score is 86.5 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.