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GREGORY LARRIEUX
NPI 1699118174
Transplant Surgery in Milwaukee, WI

Active since April 15, 2013PECOS EnrolledAccepts Medicare Assignment
83.84/100
CMS Quality Rating
9200 W WISCONSIN AVE, MILWAUKEE, WI 53226(414) 805-8632 Get Directions Write a Review

NPPES record last updated: July 20, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 20, 2021, Aug 1, 2019 (2 updates tracked since 2019).

About Gregory Larrieux NPPES

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

GREGORY LARRIEUX (NPI 1699118174) is an individual transplant surgery provider in Milwaukee, Wisconsin, licensed in New Mexico (MD2021-0736) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Presbyterian Hospital, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1699118174
Entity TypeIndividualMale
Primary Taxonomy204F00000X
Provider Legal NameGREGORY LARRIEUX
Location Address9200 W WISCONSIN AVEMilwaukee, WI 53226-3522
Mailing AddressPo Box 26666, Provider EnrollmentAlbuquerque, NM 87125-6666 · (505) 923-6770
Phone(414) 805-8632
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateApril 15, 2013
Last NPPES UpdateJuly 20, 20212 updates tracked since enumeration
NPPES CertifiedJuly 20, 2021
✔ NPI 1699118174 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyTransplant SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code204F00000X
License✔ Licensed in NM · MD2021-0736
Definition
A surgeon who specializes in transplant surgery. Source: National Uniform Claim Committee
Also ListedSurgeryTaxonomy 208600000X · License 65599 (MN)
9200 W WISCONSIN AVE, Milwaukee, WI 53226
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.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

Gregory Larrieux 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 ID7315237161
PECOS Enrollment IDI20210723002081
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 Reassignment

Medicare enrollment records show Gregory Larrieux reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Presbyterian Healthcare Services
1,001 mi
Critical Access
301 E MIEL DE LUNA AVE
Tucumcari, NM 88401
  • Reassigned Medicare billing, New Mexico enrollment
  • 2,331 clinicians in this Medicare group
NPI 1962488304 (505) 461-0141

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 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 hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
79 services13 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.
54 services16 patients
Simple removal of foreign body, stone, or stent in urethra or bladder using an endoscope 52310
This is a procedure to remove an object, stone, or tube from your urinary tract. An endoscope, a thin, flexible tube with a light and camera, is used to locate and remove the object. It is a safe and effective way to address the issue.
13 services13 patients
Transplantation of donor kidney 50360
Transplantation of a donor kidney involves replacing a non-functioning kidney with a healthy one from a donor. This procedure can significantly improve the quality of life for those with serious kidney disease. The new kidney can perform the essential task of filtering blood and removing waste.
11 services11 patients
Insertion of stent in ureter 50605
A ureteral stent is a soft, hollow tube placed temporarily into your ureter to help urine drain from your kidney to your bladder. It can assist with kidney stone passage or relieve a blockage. The procedure is done under anesthesia, and discomfort post-procedure is minimal.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Presbyterian Hospital

Acute Care Hospitals · Albuquerque, NM
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number320021
Location1100 Central Avenue SEAlbuquerque, NM 87106 · Bernalillo County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.84/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality84.59
Promoting Interoperability100
Improvement Activities40
Cost58.63

Referred Medical Equipment & Supplies CMS DME claims 4

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

Tacrolimus, immediate release, oral, 1 mg J7507
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier26 claims5,850 services$0.34 avg. paid by Medicare
Mycophenolic acid, oral, 180 mg J7518
Treatment-Treatment - Miscellaneous · category RX029N
4 suppliers21 claims3,416 services$0.97 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
4 suppliers15 claims15 services$18.95 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
1 supplier29 claims47 services$12.62 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

TRACY BLAIR WANDTKE HERRMANN APNP, CNM
Advanced Practice Midwife
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-4777
DR. ZACHARY SMITH DO
Internal Medicine (Gastroenterology)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-6830
DR. COLLEEN ANN CROWE M.D., M.P.H.
Emergency Medicine
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6469
ROBERTO MEJIAS APNP
Nurse Practitioner (Pediatrics)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6600
MRS. ANNE E B LAKATOS APN-BC, APNP, RN
Nurse Practitioner (Adult Health)
9200 W WISCONSIN AVE, DEPT OF INTERNAL MEDICINE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6850
MRS. AMANDA M MANDERS APNP
Nurse Practitioner (Adult Health)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6850
KATHLEEN A WATERHOUSE-SKIBICKI CRNA
Nurse Anesthetist, Certified Registered
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-5951
ANDREA L BEQUEST PA
Physician Assistant (Medical)
9200 W WISCONSIN AVE, INTERNAL MEDICINE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-0350

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 Gregory Larrieux's NPI number?

The NPI number for Gregory Larrieux is 1699118174. It was assigned to this individual provider in the NPPES registry on April 15, 2013.

Where is Gregory Larrieux located?

Gregory Larrieux practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 805-8632.

What is Gregory Larrieux's specialty?

The primary specialty registered for this NPI is Transplant Surgery with taxonomy code 204F00000X.

Is Gregory Larrieux enrolled in Medicare?

Yes. Gregory Larrieux 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 organization bills Medicare for Gregory Larrieux's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Larrieux reassigns Medicare benefits to Presbyterian Healthcare Services (Tucumcari, NM). The 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 Gregory Larrieux's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Larrieux accept?

Health plans from UnitedHealthcare list Gregory Larrieux 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 Gregory Larrieux affiliated with any hospitals?

According to CMS data, Gregory Larrieux is affiliated with Presbyterian Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Larrieux was last updated on July 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.