Doctor profile · Federal record

Dr. Nancy Lassa, RN

Nurse Practitioner · Registered Nurse · Wauwatosa, WI

  • NPI 1487808598
  • Accepts Medicare
  • MIPS 99.2 / 100 · 2023
  • 13 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1155 N Mayfair RD
Wauwatosa, WI 532263462
(414) 955-5990
fax (149) 554-6282

Credentials & registration

NPPES · NUCC
NPI registered
November 2008 — 18 yrs on file
Profile last updated
October 31, 2024
Year of graduation
2013 — 13 yrs since
Specialty taxonomy
363L00000X — NUCC code
State licenses (2)
Wisconsin #5507-33 · Wisconsin #115274-030
Medicaid
WI #1487808598

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1487808598. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
708
Distinct HCPCS
7
Medicare allowed
$69,940
HCPCS Description Services Patients Avg allowed
99213 Established patient office or other outpatient visit, 20-29 minutes 249 107 $68
62370 Electronic analysis reprogramming and refill of spinal canal drug infusion pump by physician 225 81 $70
99214 Established patient office or other outpatient visit, 30-39 minutes 75 61 $98
80307 Testing for presence of drug, by chemistry analyzers 73 63 $60
J7999 Compounded drug, not otherwise classified 45 37 $523
62368 Electronic analysis and reprogramming of spinal canal drug infusion pump 23 17 $33
62369 Electronic analysis reprogramming and refill of spinal canal drug infusion pump 18 16 $74

In context: peer comparison

Among 15 peers in this city , average services per provider: 92. This provider delivers 7.7× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$160
Transactions
6
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
Nevro Corp. 2 $86.93
Curonix LLC 2 $35.63
Collegium Pharmaceutical, Inc. 1 $22.93
PFIZER INC. 1 $14.91

By nature of payment

Food and Beverage
$160

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
4,206
Patients
756
Total drug cost
$196,480
Drug Type Claims Patients Total cost
Oxycodone Hcl Generic 810 126 $24,071
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 646 122 $17,443
Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) Brand 513 102 $20,901
Tizanidine Hcl Generic 313 50 $4,764
Gabapentin Generic 279 47 $6,818
Fentanyl Generic 247 31 $29,811
Morphine Sulfate Er (Morphine Sulfate) Brand 236 44 $4,978
Hydromorphone Hcl Generic 224 48 $5,100
Buprenorphine Generic 192 23 $67,539
Pregabalin Generic 181 38 $7,414

Frequently asked questions

Auto-generated from federal data
What is Dr. Nancy Lassa's medical specialty?
Dr. Nancy Lassa practices Nurse Practitioner in Wauwatosa, WI.
Where does Dr. Nancy Lassa practice?
Dr. Nancy Lassa practices at 1155 N Mayfair RD, Wauwatosa, WI 532263462. Office phone: 4149555990.
What is Dr. Nancy Lassa's NPI?
Dr. Nancy Lassa's National Provider Identifier (NPI) is 1487808598, issued by NPPES.
Does Dr. Nancy Lassa accept Medicare assignment?
Yes. Dr. Nancy Lassa accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nancy Lassa commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Electronic analysis reprogramming and refill of spinal canal drug infusion pump by physician (HCPCS 62370); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.