Doctor profile · Federal record

Dr. Mary Rolfes-Lo, M.D.

Allergy & Immunology (Internal Medicine) Physician (CMS: Allergy/Immunology) · Allergy Physician · Oak Creek, WI

  • NPI 1508839838
  • Accepts Medicare
  • 36 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
200 E Ryan RD
Oak Creek, WI 531544563
(414) 570-3590
Additional location
1500 Walnut Ridge Dr, ProHealth Care Medical Associates, INC.
Hartland, WI 530299317
(262) 928-7500
fax (262) 637-8744
Mailing address
Po Box 735044
Chicago, IL 606735044

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
May 7, 2025
Year of graduation
1990 — 36 yrs since
Specialty taxonomy
207RA0201X — NUCC code
State licenses (2)
Wisconsin #38588 · Wisconsin #38588-020
Medicaid
WI #32347800

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1508839838. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
33
Distinct HCPCS
2
Medicare allowed
$4,177
HCPCS Description Services Patients Avg allowed
99203 New patient office or other outpatient visit, 30-44 minutes 19 19 $105
99204 New patient office or other outpatient visit, 45-59 minutes 14 14 $156

In context: peer comparison

Among 1 peers in this city , average services per provider: 16. This provider delivers 2.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$78
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Novartis Pharmaceuticals Corporation 1 $77.53

By nature of payment

Food and Beverage
$78

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
115
Patients
17
Total drug cost
$73,716
Drug Type Claims Patients Total cost
Azelastine Hcl Generic 25 17 $1,328
Montelukast Sodium Generic 21 0 $384
Dupixent Pen (Dupilumab) Brand 12 0 $45,993
Fluticasone Propionate Generic 12 0 $225
Symbicort (Budesonide/Formoterol Fumarate) Brand 12 0 $5,945
Advair Hfa (Fluticasone Propion/Salmeterol) Brand 11 0 $6,662
Breo Ellipta (Fluticasone/Vilanterol) Brand 11 0 $6,034
Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) Brand 11 0 $7,147

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Mary Rolfes-Lo's medical specialty?
Dr. Mary Rolfes-Lo practices Allergy & Immunology (Internal Medicine) Physician in Oak Creek, WI.
Where does Dr. Mary Rolfes-Lo practice?
Dr. Mary Rolfes-Lo practices at 200 E Ryan RD, Oak Creek, WI 531544563. Office phone: 4145703590.
What is Dr. Mary Rolfes-Lo's NPI?
Dr. Mary Rolfes-Lo's National Provider Identifier (NPI) is 1508839838, issued by NPPES.
Does Dr. Mary Rolfes-Lo accept Medicare assignment?
Yes. Dr. Mary Rolfes-Lo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Rolfes-Lo commonly perform?
Top Medicare-reported procedures in 2023: New patient office or other outpatient visit (HCPCS 99203); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.