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CORI WILLIAMS FNP
NPI 1710371877
Nurse Practitioner - Family in Onaway, MI

Active since March 26, 2015PECOS EnrolledAccepts Medicare Assignment
21258 W M 68 HWY, ONAWAY, MI 49765(989) 733-2082(989) 733-8487 Get Directions Write a Review

NPPES record last updated: May 22, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Cori Williams Fnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CORI WILLIAMS FNP (NPI 1710371877) is an individual family provider in Onaway, Michigan, licensed in Michigan (4704234124) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS, is affiliated with Mymichigan Medical Center Alpena, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1710371877
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameCORI WILLIAMSCredential: FNP
Location Address21258 W M 68 HWYOnaway, MI 49765
Mailing AddressPo Box 427Hillman, MI 49746-0427 · (989) 354-2197 · Fax (989) 356-6524
Phone(989) 733-2082
Fax(989) 733-8487
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateMarch 26, 2015
Last NPPES UpdateMay 22, 2015
✔ NPI 1710371877 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in MI · 4704234124
21258 W M 68 HWY, Onaway, MI 49765
Open in Google Maps ↗

Other Identifiers 1

Medicare OSCAR/certificationPENDINGMI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Priority Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Cori Williams Fnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4880914738
PECOS Enrollment IDI20150518001184
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Cori Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Thunder Bay Community Health Service, Inc
0.5 mi
Federally Qualified Health Center (FQHC)
4549 M 33
Onaway, MI 49765
  • Reassigned Medicare billing, Michigan enrollment
  • 57 clinicians in this Medicare group
NPI 1821228958 (989) 733-4980
Internal Medicine Clinic PLLC
43 mi
Pulmonary Disease
105 ARBOR LN
Alpena, MI 49707
  • Reassigned Medicare billing, Michigan enrollment
  • 3 clinicians in this Medicare group
NPI 1124011127 (989) 356-3485
Np Health Of Mi PLLC
289 mi
Physical Medicine & Rehabilitation
9400 MARION AVE
Morton Grove, IL 60053
  • Reassigned Medicare billing, Michigan enrollment
  • 12 clinicians in this Medicare group
NPI 1831716158 (855) 611-8783

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
72 services60 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
34 services20 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
24 services24 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
21 services16 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
17 services17 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mymichigan Medical Center Alpena

Acute Care Hospitals · Alpena, MI
5/5 CMS rating
OwnershipProprietary
CMS Certification Number230036
Location1501 W Chisholm StAlpena, MI 49707 · Alpena County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49765 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.74 typical visit price
range $54.34 – $166.68
Typical copayment $21.18 (range $13.58 – $41.67)
Most-billed visit code 99203
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
5 suppliers16 claims42 services$4.40 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Cori Williams's NPI number?

The NPI number for Cori Williams is 1710371877. It was assigned to this individual provider in the NPPES registry on March 26, 2015.

Where is Cori Williams located?

Cori Williams practices at 21258 W M 68 Hwy, Onaway, MI 49765. The listed phone number is (989) 733-2082.

What is Cori Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Cori Williams enrolled in Medicare?

Yes. Cori Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Cori Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cori Williams reassigns Medicare benefits to 3 organizations: Thunder Bay Community Health Service, Inc (Onaway, MI), Internal Medicine Clinic PLLC (Alpena, MI) and Np Health Of Mi PLLC (Morton Grove, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Cori Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Cori Williams accept?

Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Priority Health list Cori Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Cori Williams affiliated with any hospitals?

According to CMS data, Cori Williams is affiliated with Mymichigan Medical Center Alpena.

When was this NPI record last updated?

The NPPES record for Cori Williams was last updated on May 22, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.