Cori Williams, FNP
NPI 1710371877 · Family Nurse Practitioner · Onaway, MI
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cori Williams, FNP is a Family Nurse Practitioner provider in Onaway, MI (NPI 1710371877).
Provider details
- NPI number
- 1710371877
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 4704234124 (MI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
179 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 72 | $103 |
| Hemoglobin A1c Level83036 | 34 | $10 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 24 | $146 |
| Urinalysis, Manual Test81002 | 21 | $3 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 17 | $136 |
| Administration of Influenza Virus VaccineG0008 | 11 | $31 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 127 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 289 | 89 |
| Lisinopril | 268 | 77 |
| Levothyroxine Sodium | 208 | 67 |
| Gabapentin | 178 | 30 |
| Omeprazole | 172 | 59 |
| Losartan Potassium | 164 | 47 |
| Semaglutide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-03-26
- Last updated
- 2015-05-22
Frequently asked questions
- What is Cori Williams's NPI number?
- Cori Williams's National Provider Identifier (NPI) is 1710371877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cori Williams's specialty?
- Cori Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Cori Williams located?
- Cori Williams's practice location on file with NPPES is 21258 W M 68 Hwy, Onaway, MI 49765.
- What is Cori Williams's phone number?
- The practice phone number listed in the NPPES registry for Cori Williams is (989) 733-2082.
- Does Cori Williams accept Medicare?
- Cori Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cori Williams's NPI active?
- Yes — Cori Williams's NPI (1710371877) is active in the NPPES registry as of the last update on 2015-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.