MRS. CALLIE JEAN GRENIER FNP-C
NPI 1275099723
Nurse Practitioner - Family in Chelmsford, MA

Q: What is Callie Grenier's NPI number?

The NPI number for Callie Grenier is 1275099723. It was assigned to this individual provider in the NPPES registry on February 20, 2019.

Q: What is Callie Grenier's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Callie Grenier was last updated on May 28, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since February 20, 2019PECOS EnrolledAccepts Medicare Assignment

290 LITTLETON RD UNIT 3, CHELMSFORD, MA 01824(978) 685-2460 Get Directions Write a Review

NPPES record last updated: May 28, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: May 28, 2025, Jan 11, 2023, Feb 20, 2019 (3 updates tracked since 2019).

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About Mrs. Callie Jean Grenier Fnp-c NPPES

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

MRS. CALLIE JEAN GRENIER FNP-C (NPI 1275099723) is an individual family provider in Chelmsford, Massachusetts, licensed in Massachusetts (RN2260921) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2018).

NPPES Registry Identity

NPI1275099723

Entity TypeIndividualFemale

Primary Taxonomy363LF0000X

Provider Legal NameMRS. CALLIE JEAN GRENIERCredential: FNP-C

Location Address290 LITTLETON RD UNIT 3Chelmsford, MA 01824-3429

Mailing Address290 Littleton Rd Unit 3Chelmsford, MA 01824-3429 · (978) 685-2460

Phone(978) 685-2460

Sole ProprietorNo

Medical School CMSOtherGraduated 2018

Enumeration DateFebruary 20, 2019

Last NPPES UpdateMay 28, 20253 updates tracked since enumeration

NPPES CertifiedMay 28, 2025

✔ NPI 1275099723 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 MA · RN2260921✔ Licensed in NH · 061024-23

290 LITTLETON RD UNIT 3, Chelmsford, MA 01824

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Other Names 1

Former Name (1)Callie Jean Smith

Other Identifiers 2

Other061024-23NH · Nh Aprn Fnp License #

Other061024-21NH · Nh Rn License #

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

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

Mrs. Callie Jean Grenier Fnp-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 ID9234468356

PECOS Enrollment IDI20190913002343, I20211207001705

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 5

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.

Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309

A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.

1,092 services348 patients

Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 99310

A follow-up nursing facility visit is a routine check-up that typically lasts about 35 minutes. During this visit, your health status is evaluated, any changes in your condition are noted, and necessary adjustments to your care plan are made. It's an essential part of maintaining your health.

530 services418 patients

Nursing facility discharge management, more than 30 minutes 99316

Nursing facility discharge management over 30 minutes is a comprehensive process where a healthcare team prepares you for leaving the facility. It involves creating a tailored plan, coordinating care, and ensuring a smooth transition to your next care setting.

330 services307 patients

Advance care planning, first 30 minutes 99497

Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.

160 services147 patients

Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308

A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.

32 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01824 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

$97.64 typical visit price

range $63.72 – $189.86

Typical copayment $24.41 (range $15.93 – $47.46)

Most-billed visit code 99203

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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 20

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

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