Cori Williams, FNP
Family Nurse Practitioner · Onaway, MI
Cori Williams, FNP is a family nurse practitioner with a practice address in Onaway, Michigan, and NPI 1710371877, issued on Mar 26, 2015. Check the license (Michigan 4704234124, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cori Williams
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 4704234124 MI
Self-reported in NPPES; status is on the state search - Practice location
- 21258 W M 68 Hwy, Onaway, MI 49765
- Phone
- (989) 733-2082
- Enumerated
- Mar 26, 2015
- Record last updated
- May 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (989) 733-8487
- Medicare enrollment
- Enrolled (PECOS I20150518001184); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Cori Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704234124Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.1 times the Medicare Part D claims of the average family nurse practitioner in 2024
6,670 Medicare Part D claims for 631 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 353 claims were for opioids.
Most prescribed
- Atorvastatin Calcium289 claims
- Lisinopril268 claims
- Levothyroxine Sodium208 claims
- Gabapentin178 claims
- Omeprazole172 claims
- Losartan Potassium164 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 2 group practices
- Internal Medicine Clinic PLLCAlpena, MI
- NP Health OF MI PLLCFlint, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
5 family nurse practitioner records list a practice address in Onaway
They are 5 of the 37 NPPES records with a practice address in Onaway, and 5,356 family nurse practitioner records in Michigan.
All 5 in Onaway → All 5,356 in Michigan → Every provider in Onaway →
Other family nurse practitioner records in Michigan
- Uaye Abai, BSC, BSN, RN, FNPWest Bloomfield, MI1457460222
- Leila Abbas, NPInkster, MI1356857056
- Norma AbbottCaro, MI1700321346
- Bianca Abboud, FNPSaginaw, MI1588437404
- Fatima Abdallah, FNP-BCDearborn, MI1831783695
- Fatmeh Abdallah, FNPDearborn, MI1700678745
- Houda AbdallahOak Park, MI1811524655
- Zienab Abdallah, FNPDearborn, MI1417718065
- Samir Abdel-HakCanton, MI1194541094
- Deya Abdelbaki, NPBelleville, MI1427582311
Common questions
What is Cori Williams, FNP's NPI number?
Cori Williams, FNP's National Provider Identifier (NPI) is 1710371877, issued on Mar 26, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Cori Williams, FNP located?
The NPPES record lists a practice address at 21258 W M 68 Hwy, Onaway, MI, 49765. Phone: (989) 733-2082. Providers update this record themselves, so call before visiting.
How can I verify Cori Williams, FNP's license?
NPPES lists Michigan license number 4704234124, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Cori Williams, FNP prescribe under Medicare Part D?
In 2024, Cori Williams, FNP had 6,670 Medicare Part D claims for 631 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.