ALLISON ENSIGN LARUSSO MD
NPI 1396728333
Emergency Medicine in Worcester, MA

Active since November 23, 2005PECOS EnrolledAccepts Medicare Assignment
97.02/100
CMS Quality Rating
55 LAKE AVE N, WORCESTER, MA 01655(508) 421-1400(508) 421-1490 Get Directions Write a Review

NPPES record last updated: December 8, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 8, 2023, Nov 23, 2020 (2 updates tracked since 2020).

About Allison Ensign Larusso Md NPPES

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

ALLISON ENSIGN LARUSSO MD (NPI 1396728333) is an individual emergency medicine provider in Worcester, Massachusetts, licensed in Massachusetts (213743) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS, is affiliated with Umass Memorial Healthalliance Hospitals, and is a graduate of University Of Massachusetts Medical School (1999).

NPPES Registry Identity

NPI1396728333
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameALLISON ENSIGN LARUSSOCredential: MD
Location Address55 LAKE AVE NWorcester, MA 01655-0002
Mailing AddressPo Box 415348Boston, MA 02241-5348
Fax(508) 421-1490
Sole ProprietorNo
Medical School CMSUniversity Of Massachusetts Medical SchoolGraduated 1999
Enumeration DateNovember 23, 2005
Last NPPES UpdateDecember 8, 20232 updates tracked since enumeration
NPPES CertifiedDecember 8, 2023
NPI 1396728333 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License Licensed in MA · 213743
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
55 LAKE AVE N, Worcester, MA 01655

Other Identifiers 1

Medicaid110005596AMA

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

Allison Ensign Larusso Md 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 ID7214013598
PECOS Enrollment IDI20080326000965
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 4

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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
126 services123 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
97 services93 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
38 services37 patients
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.
13 services13 patients

Hospital Affiliations CMS Care Compare 3

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

Umass Memorial Healthalliance Hospitals

Acute Care Hospitals · Leominster, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number220001
Location60 Hospital RoadLeominster, MA 01453 · Worcester County
Emergency services

Umass Memorial Healthcare-Marlborough Hospital

Acute Care Hospitals · Marlborough, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220049
Location157 Union StreetMarlborough, MA 01752 · Middlesex County
Emergency services

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220163
Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01655 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

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.

97.02/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality78.09
Promoting Interoperability100
Improvement Activities40

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.

Emergency Medicine
55 LAKE AVE N
WORCESTER, MA 01655
Nurse Practitioner
55 LAKE AVE N, DEPARTMENT OF RADIOLOGY
WORCESTER, MA 01655
Nurse Anesthetist, Certified Registered
55 LAKE AVE N, DEPARTMENT OF ANESTHESIOLOGY
WORCESTER, MA 01655
Physician Assistant
55 LAKE AVE N
WORCESTER, MA 01655
Internal Medicine
55 LAKE AVE N
WORCESTER, MA 01655
Internal Medicine (Hematology & Oncology)
55 LAKE AVE N
WORCESTER, MA 01655
Anesthesiology
55 LAKE AVE N, ANESTHESIOLOGY
WORCESTER, MA 01655
Anesthesiology
55 LAKE AVE N
WORCESTER, MA 01655

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 Allison Larusso's NPI number?

The NPI number for Allison Larusso is 1396728333. It was assigned to this individual provider in the NPPES registry on November 23, 2005.

Where is Allison Larusso located?

Allison Larusso practices at 55 Lake Ave N, Worcester, MA 01655. The listed phone number is (508) 421-1400.

What is Allison Larusso's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Allison Larusso enrolled in Medicare?

Yes. Allison Larusso 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 Allison Larusso affiliated with any hospitals?

According to CMS data, Allison Larusso is affiliated with Umass Memorial Healthalliance Hospitals, Umass Memorial Healthcare-Marlborough Hospital and Umass Memorial Medical Center/University Campus.

When was this NPI record last updated?

The NPPES record for Allison Larusso was last updated on December 8, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.