Patrick Onkka, M.D.
NPI 1407235518 · Rheumatology Physician · Lake Forest, IL
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Onkka, M.D. is a Rheumatology Physician provider in Lake Forest, IL (NPI 1407235518).
Provider details
- NPI number
- 1407235518
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 125066334 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,038 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 475 | $15 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 413 | $9 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 331 | $67 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 261 | $136 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Each Additional Hour96366 | 95 | $21 |
| Injection of Drug Or Substance Into Vein96374 | 83 | $39 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 197 | 63 |
| Hydroxychloroquine Sulfate | 139 | 47 |
| Methotrexate Sodiumbrand: Methotrexate | 125 | 43 |
| Allopurinol | 121 | 22 |
| Tramadol Hcl | 61 | 12 |
| Adalimumabbrand: Humira(cf) Pen | 51 | — |
| Alendronate Sodium | 49 |
Practice location
Mailing address
Additional practice locations (1)
- 5841 S Maryland Ave Ste 930Chicago, IL 60637Phone: (773) 702-6119Fax: (773) 834-7065
Registry dates
- Enumerated
- 2015-05-21
- Last updated
- 2020-09-24
- Certified
- 2020-09-24
Frequently asked questions
- What is Patrick Onkka's NPI number?
- Patrick Onkka's National Provider Identifier (NPI) is 1407235518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Onkka's specialty?
- Patrick Onkka is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Onkka located?
- Patrick Onkka's practice location on file with NPPES is 800 N Westmoreland Rd Ste 201, Lake Forest, IL 60045-1687.
- What is Patrick Onkka's phone number?
- The practice phone number listed in the NPPES registry for Patrick Onkka is (847) 535-7647.
- Does Patrick Onkka accept Medicare?
- Patrick Onkka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Onkka's NPI active?
- Yes — Patrick Onkka's NPI (1407235518) is active in the NPPES registry as of the last update on 2020-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.