Doctor profile · Federal record

Dr. Patrick Onkka, M.D.

Rheumatology Physician (CMS: Rheumatology) · Internal Medicine Physician · Lake Forest, IL

  • NPI 1407235518
  • Accepts Medicare
  • MIPS 91.3 / 100 · 2023
  • 11 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
800 N Westmoreland RD Ste 201
Lake Forest, IL 600451687
(847) 535-7647
fax (224) 271-3310
Additional location
5841 S Maryland Ave Ste 930
Chicago, IL 60637
(773) 702-6119
fax (773) 834-7065

Credentials & registration

NPPES · NUCC
NPI registered
May 2015 — 11 yrs on file
Profile last updated
September 24, 2020
Year of graduation
2015 — 11 yrs since
Specialty taxonomy
207RR0500X — NUCC code
State licenses (2)
Illinois #036-145886 · Illinois #125066334

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1407235518. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
91,616
Distinct HCPCS
10
Medicare allowed
$1,339,076
HCPCS Description Services Patients Avg allowed
J1439 Injection, ferric carboxymaltose, 1 mg 23,250 23 $1
J0717 Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) 16,800 11 $5
J0897 Injection, denosumab, 1 mg 15,330 216 $23
J3380 Injection, vedolizumab, 1 mg 12,300 11 $22
J3111 Injection, romosozumab-aqqg, 1 mg 8,190 23 $10
J0129 Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) 6,475 26 $42
J1602 Injection, golimumab, 1 mg, for intravenous use 5,530 17 $13
J1745 Injection, infliximab, excludes biosimilar, 10 mg 1,690 13 $33
96372 Injection of drug or substance under skin or into muscle 391 261 $15
36415 Insertion of needle into vein for collection of blood sample 333 209 $8

In context: peer comparison

Among 4 peers in this city , average services per provider: 3,908. This provider delivers 23× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
858
Patients
174
Total drug cost
$300,338
Drug Type Claims Patients Total cost
Prednisone Generic 191 60 $2,025
Methotrexate (Methotrexate Sodium) Brand 136 36 $5,476
Hydroxychloroquine Sulfate Generic 129 39 $7,310
Allopurinol Generic 69 13 $1,031
Colchicine Generic 48 0 $2,546
Tramadol Hcl Generic 48 12 $327
Leflunomide Generic 32 0 $2,240
Naproxen Generic 28 0 $250
Folic Acid Generic 27 0 $133
Gabapentin Generic 27 0 $504

Frequently asked questions

Auto-generated from federal data
What is Dr. Patrick Onkka's medical specialty?
Dr. Patrick Onkka practices Rheumatology Physician in Lake Forest, IL.
Where does Dr. Patrick Onkka practice?
Dr. Patrick Onkka practices at 800 N Westmoreland RD Ste 201, Lake Forest, IL 600451687. Office phone: 8475357647.
What is Dr. Patrick Onkka's NPI?
Dr. Patrick Onkka's National Provider Identifier (NPI) is 1407235518, issued by NPPES.
Does Dr. Patrick Onkka accept Medicare assignment?
Yes. Dr. Patrick Onkka accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Patrick Onkka commonly perform?
Top Medicare-reported procedures in 2023: Injection, ferric carboxymaltose, 1 mg (HCPCS J1439); Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (HCPCS J0717); Injection, denosumab, 1 mg (HCPCS J0897). Source: CMS Medicare Physician & Other Practitioners file.