Doctor profile · Federal record

Dr. Kaitlin Mastalerz, PA-C

Physician Assistant · Lake Forest, IL

  • NPI 1023404886
  • Accepts Medicare
  • MIPS 91.3 / 100 · 2023
  • 10 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
660 N Westmoreland RD
Lake Forest, IL 600451659
(847) 234-5600

Credentials & registration

NPPES · NUCC
NPI registered
April 2015 — 11 yrs on file
Profile last updated
May 28, 2024
Year of graduation
2016 — 10 yrs since
Specialty taxonomy
363A00000X — NUCC code
State license (1)
Illinois #085.005883

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023404886. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
274
Distinct HCPCS
4
Medicare allowed
$23,966
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 141 95 $70
99239 Hospital discharge day management, more than 30 minutes 73 73 $103
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 42 29 $106
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 18 18 $117

In context: peer comparison

Among 14 peers in Lake Forest Physician Assistant, average services per provider: 56. This provider delivers 4.9× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
24
Patients
22
Total drug cost
$284
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 12 11 $180
Pantoprazole Sodium Generic 12 11 $104

Frequently asked questions

Auto-generated from federal data
What is Dr. Kaitlin Mastalerz's medical specialty?
Dr. Kaitlin Mastalerz practices Physician Assistant in Lake Forest, IL.
Where does Dr. Kaitlin Mastalerz practice?
Dr. Kaitlin Mastalerz practices at 660 N Westmoreland RD, Lake Forest, IL 600451659. Office phone: 8472345600.
What is Dr. Kaitlin Mastalerz's NPI?
Dr. Kaitlin Mastalerz's National Provider Identifier (NPI) is 1023404886, issued by NPPES.
Does Dr. Kaitlin Mastalerz accept Medicare assignment?
Yes. Dr. Kaitlin Mastalerz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kaitlin Mastalerz commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.