Doctor profile · Federal record

Dr. Kristen Walls, PA-C

Physician Assistant · Worcester, MA

  • NPI 1437475928
  • Accepts Medicare
  • MIPS 89.0 / 100 · 2023
  • 17 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
55 Lake Ave N, Department of Critical Care
Worcester, MA 016550002
(774) 443-0344
fax (508) 856-0559
Mailing address
Po Box 415348
Boston, MA 022415348

Credentials & registration

NPPES · NUCC
NPI registered
April 2010 — 16 yrs on file
Profile last updated
November 3, 2020
Year of graduation
2009 — 17 yrs since
Specialty taxonomy
363A00000X — NUCC code
State license (1)
Massachusetts #3951
Medicaid
MA #110106027A

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1437475928. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
98
Distinct HCPCS
2
Medicare allowed
$13,268
HCPCS Description Services Patients Avg allowed
99292 Critical care, each additional 30 minutes 52 19 $92
99291 Critical care, first 30-74 minutes 46 27 $184

In context: peer comparison

Among 112 peers in Worcester Physician Assistant, average services per provider: 87. This provider delivers 1.1× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Kristen Walls's medical specialty?
Dr. Kristen Walls practices Physician Assistant in Worcester, MA.
Where does Dr. Kristen Walls practice?
Dr. Kristen Walls practices at 55 Lake Ave N, Worcester, MA 016550002. Office phone: 7744430344.
What is Dr. Kristen Walls's NPI?
Dr. Kristen Walls's National Provider Identifier (NPI) is 1437475928, issued by NPPES.
Does Dr. Kristen Walls accept Medicare assignment?
Yes. Dr. Kristen Walls accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kristen Walls commonly perform?
Top Medicare-reported procedures in 2023: Critical care (HCPCS 99292); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.