Doctor profile · Federal record

Dr. Allison Illsley, NP

Nurse Practitioner · Acute Care Nurse Practitioner · Worcester, MA

  • NPI 1972974277
  • Accepts Medicare
  • MIPS 89.0 / 100 · 2023
  • 11 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
55 Lake Ave N
Worcester, MA 016550002
(774) 443-7552
fax (774) 441-6086
Mailing address
Po Box 415348
Boston, MA 022415348

Credentials & registration

NPPES · NUCC
NPI registered
October 2015 — 11 yrs on file
Profile last updated
November 10, 2020
Year of graduation
2015 — 11 yrs since
Specialty taxonomy
363L00000X — NUCC code
State license (1)
Massachusetts #RN2281827
Medicaid
MA #110108544A

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1972974277. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
16
Distinct HCPCS
1
Medicare allowed
$2,944
HCPCS Description Services Patients Avg allowed
99291 Critical care, first 30-74 minutes 16 14 $184

In context: peer comparison

Among 119 peers in Worcester Nurse Practitioner, average services per provider: 94. This provider delivers 0.2× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Allison Illsley's medical specialty?
Dr. Allison Illsley practices Nurse Practitioner in Worcester, MA.
Where does Dr. Allison Illsley practice?
Dr. Allison Illsley practices at 55 Lake Ave N, Worcester, MA 016550002. Office phone: 7744437552.
What is Dr. Allison Illsley's NPI?
Dr. Allison Illsley's National Provider Identifier (NPI) is 1972974277, issued by NPPES.
Does Dr. Allison Illsley accept Medicare assignment?
Yes. Dr. Allison Illsley accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Allison Illsley commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.