WILLIAM JAMES GRENIER APRN, NP-C
NPI 1154626521
Nurse Practitioner - Family in Louisville, KY

Active since January 17, 2011PECOS EnrolledAccepts Medicare Assignment
10401 LINN STATION RD STE 100, LOUISVILLE, KY 40223(502) 589-8600(855) 632-8329 Get Directions Write a Review

NPPES record last updated: July 13, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 13, 2023, Jul 21, 2022, Jul 28, 2017 and 3 more (6 updates tracked since 2015).

About William James Grenier Aprn, Np-c NPPES

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

WILLIAM JAMES GRENIER APRN, NP-C (NPI 1154626521) is an individual family provider in Louisville, Kentucky, licensed in Kentucky (3006776) and active in the NPI registry since January 2011. He is enrolled in Medicare PECOS, is affiliated with Baystate Medical Center, and is a graduate of Other (2008).

NPPES Registry Identity

NPI1154626521
Entity TypeIndividualMale
Primary Taxonomy363LF0000X
Provider Legal NameWILLIAM JAMES GRENIERCredential: APRN, NP-C
Location Address10401 LINN STATION RD STE 100Louisville, KY 40223-3842
Mailing Address10401 Linn Station Rd Ste 100Louisville, KY 40223-3842 · (502) 589-8600 · Fax (855) 632-8329
Fax(855) 632-8329
Sole ProprietorYes
Medical School CMSOtherGraduated 2008
Enumeration DateJanuary 17, 2011
Last NPPES UpdateJuly 13, 20236 updates tracked since enumeration
NPPES CertifiedJuly 13, 2023
NPI 1154626521 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
Licenses Licensed in KY · 3006776 Licensed in OH · APRN.CNP.019811 Licensed in NC · 5008544 Licensed in IN · 71006200A Licensed in FL · 9421762
10401 LINN STATION RD STE 100, Louisville, KY 40223

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

William James Grenier Aprn, Np-c 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 ID1557547460
PECOS Enrollment IDI20260112001627
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.

Areas of Expertise CMS Part B claims

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.
40 services18 patients

Hospital Affiliations CMS Care Compare

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

Baystate Medical Center

Acute Care Hospitals · Springfield, MA
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220077
Location759 Chestnut StreetSpringfield, MA 01199 · Hampden County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 40223 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
$82.24 typical visit price
range $52.76 – $162.27
Typical copayment $20.56 (range $13.19 – $40.56)
Most-billed visit code 99203
Established Patient
$93.94 typical visit price
range $16.53 – $131.99
Typical copayment $23.48 (range $4.13 – $32.99)
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.

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Counselor (Professional)
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223
Clinic/Center (Developmental Disabilities)
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223
Social Worker (Clinical)
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223
Clinic/Center (Mental Health (Including Community Mental Health Center))
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223
Nurse Practitioner (Psychiatric/Mental Health)
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223
Social Worker (Clinical)
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223
Nurse Practitioner (Psychiatric/Mental Health)
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223
Clinic/Center (Mental Health (Including Community Mental Health Center))
10401 LINN STATION RD STE 100
LOUISVILLE, KY 40223

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 William Grenier's NPI number?

The NPI number for William Grenier is 1154626521. It was assigned to this individual provider in the NPPES registry on January 17, 2011.

Where is William Grenier located?

William Grenier practices at 10401 Linn Station Rd Ste 100, Louisville, KY 40223. The listed phone number is (502) 589-8600.

What is William Grenier's specialty?

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

Is William Grenier enrolled in Medicare?

Yes. William Grenier 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.

Is William Grenier affiliated with any hospitals?

According to CMS data, William Grenier is affiliated with Baystate Medical Center.

When was this NPI record last updated?

The NPPES record for William Grenier was last updated on July 13, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.