Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GALILEO MACINNIS AG-ACNP-BC
NPI 1912456914
Nurse Practitioner in Nashville, TN

Q: What is Galileo Macinnis's NPI number?

The NPI number for Galileo Macinnis is 1912456914. It was assigned to this individual provider in the NPPES registry on October 2, 2016.

Q: What is Galileo Macinnis's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Galileo Macinnis was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 45 days 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.

Active since October 02, 2016PECOS EnrolledAccepts Medicare Assignment

2400 PATTERSON ST STE 502, NASHVILLE, TN 37203(615) 515-1900(615) 292-4633 Get Directions Write a Review

NPPES record last updated: September 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 10, 2026, Jun 13, 2024, Oct 19, 2020 and 3 more (6 updates tracked since 2016).

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About Galileo Macinnis Ag-acnp-bc NPPES

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

GALILEO MACINNIS AG-ACNP-BC (NPI 1912456914) is an individual nurse practitioner in Nashville, Tennessee, licensed in Massachusetts (RN10050621) and active in the NPI registry since October 2016. She is enrolled in Medicare PECOS, is affiliated with Tristar Summit Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1912456914

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameGALILEO MACINNISCredential: AG-ACNP-BC

Location Address2400 PATTERSON ST STE 502Nashville, TN 37203-6511

Mailing Address2400 Patterson St Ste 502Nashville, TN 37203-6511 · (615) 515-1900 · Fax (615) 292-4633

Phone(615) 515-1900

Fax(615) 292-4633

Sole ProprietorNo

Medical School CMSOtherGraduated 2016

Enumeration DateOctober 2, 2016

Last NPPES UpdateSeptember 10, 20266 updates tracked since enumeration

NPPES CertifiedSeptember 10, 2026

✔ NPI 1912456914 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in MA · RN10050621

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Also ListedNurse Practitioner · Acute CareTaxonomy 363LA2100X · License 0000021836 (TN)

Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X · License APN21836 (TN)

2400 PATTERSON ST STE 502, Nashville, TN 37203

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Secondary Practice Locations 2

Location 155 Lake Ave NWorcester, MA 01655-0002 · Phone (508) 334-3278 · Fax (508) 334-7284

Location 24230 Harding Pike Ste 200Nashville, TN 37205-2020 · Phone (615) 964-5864

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Arkansas Health & Wellness, Ambetter Health and more.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

Galileo Macinnis Ag-acnp-bc 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 ID2264719749

PECOS Enrollment IDI20170510002399

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

Medicare enrollment records show Galileo Macinnis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cardiovascular Anesthesiologists PC

2.6 mi

Critical Care Medicine

4230 HARDING PIKE STE 435
Nashville, TN 37205

Reassigned Medicare billing, Tennessee enrollment
164 clinicians in this Medicare group

NPI 1912953381 (615) 385-3704

Advanced Diagnostic Imaging, PC

14 mi

Internal Medicine

3024 BUSINESS PARK CIR
Goodlettsville, TN 37072

Reassigned Medicare billing, Tennessee enrollment
734 clinicians in this Medicare group

NPI 1093741464 (615) 239-2061

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 3

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.

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

45 services38 patients

Critical care, each additional 30 minutes 99292

Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.

22 services14 patients

Insertion of artery tube for blood sampling or infusion through skin 36620

This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Tristar Summit Medical Center

Acute Care Hospitals · Hermitage, TN

2/5 CMS rating

OwnershipProprietary

CMS Certification Number440150

Location5655 Frist BlvdHermitage, TN 37076 · Davidson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37203 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

$81.53 typical visit price

range $52.64 – $160.89

Typical copayment $20.38 (range $13.16 – $40.22)

Most-billed visit code 99203

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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.

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.

MARITA WALTON ELLIS

Nurse Practitioner