Dr. Patrick E. Onkka, MD

  • Lake Forest, IL
  • Rheumatologist
NPI1407235518PAC ID2163713603
Medicare services, 2024
75,408
Medicare patients, 2024
691
Part D claims, 2024
1,255
Publications
3
MIPS score, 2024
95
Practice address
800 N Westmoreland Rd Ste 201 Suite 201, Lake Forest, IL 60045
Practice phone
Call (847) 535-7647
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

Northwestern Medical Group

Multi-specialty group site · Lake Forest, Illinois

See all 7 affiliations

Find Dr. Onkka's professional email, personal email and mobile number

Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.

View contacts for free

Dr. Patrick E. Onkka is a rheumatologist in Lake Forest, Illinois

Dr. Onkka practices at Northwestern Medical Group in Lake Forest, Illinois.

Dr. Onkka's NPI, 1407235518, was assigned on May 21, 2015. Dr. Onkka graduated from Indiana University School of Medicine in 2015. Dr. Onkka holds Illinois license 036-145886.

NPI and contact details
Medicare PAC ID
2163713603
NPI enumeration date
May 21, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(847) 535-7647
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
37
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Patrick E. Onkka practices at Northwestern Medical Group in Lake Forest, Illinois

Dr. Onkka's primary practice is Northwestern Medical Group, at 800 N Westmoreland Rd Ste 201 Suite 201, Lake Forest, IL 60045. The practice phone is (847) 535-7647.

  • Northwestern Medical Group
    800 N Westmoreland Rd Ste 201 Suite 201, Lake Forest, IL 60045Phone(847) 535-7647

Source: Dmand AI Affiliation Data

Dr. Patrick E. Onkka is affiliated with 6 sites of care and 1 medical group

Dr. Onkka's primary practice is Northwestern Medical Group in Lake Forest, Illinois. Dr. Onkka is also affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Onkka to 4 more hospitals, each named with a free account.

See all 7 affiliations for Dr. Onkka

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Patrick E. Onkka's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Onkka practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Northwestern Medical GroupAvailable with a free account
+5 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Dr. Onkka practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Patrick E. Onkka is one of 285 rheumatologists in Illinois

Rheumatology is Dr. Onkka's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Onkka is licensed in Illinois.

Specialties and state licenses

  • Rheumatology, IllinoisPrimaryLicense 125066334 · taxonomy 207RR0500X

Rheumatologists near Dr. Onkka

Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.

285rheumatologists in Illinois
3rheumatologists in Lake Forest

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Patrick E. Onkka billed Medicare for 75,408 services in 2024

CMS data shows 75,408 Medicare services from Dr. Onkka across 22 procedure codes in 2024, for 691 Medicare patients. Medicare paid $839,042 for them. Every service was in an office.

Medicare services, 202475,408
Medicare patients691
Paid by Medicare$839,042
Procedure codes22

Dr. Onkka's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 89,8202024: 65,72027%
Other services
2023: 02024: 7,650
Tests and treatments
2023: 9502024: 1,15121%
Office and hospital visits
2023: 4952024: 4617%
Surgery
2023: 3512024: 42621%

Dr. Onkka compared with the Illinois median for rheumatologists, 2024

  • Dr. Onkka
  • Illinois median
Medicare services
75,408vs 98776.4 times
Medicare patients
691vs 2622.6 times
Part D claims
1,060vs 1,077Close to median

Medians across 290 rheumatologists in Illinois with Dmand AI profiles that report each measure.

Dr. Onkka's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Onkka

Need commercial claims for Dr. Onkka?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Onkka and other rheumatologists in Illinois.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Patrick E. Onkka treated 691 Medicare patients in 2024, average age 75

CMS counts 691 Medicare patients who saw Dr. Onkka in 2024. The largest group is 65 to 74, with 286 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 7% are also on Medicaid. Their average risk score is 1.43, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Onkka's median patient age at 70, with 70% women.

Medicare patients, 2024691
Average age75
Average risk score1.43
Also on Medicaid7%

Dr. Onkka's Medicare patients by age, 2024

Dr. Onkka's Medicare patients by sex, 2024

  • Women52977%
  • Men16223%

Chronic conditions among Dr. Onkka's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure68%
  3. Arthritis65%
  4. Osteoporosis62%
  5. Anxiety27%
  6. Ischemic heart disease26%
  7. Mood disorders24%
  8. Depression23%

Share of Medicare patients with each condition. A patient can have several.

Dr. Onkka's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 70

Patient panel by sex, all payers

  • Women70%
  • Men30%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Patrick E. Onkka wrote 1,255 Medicare Part D claims in 2024

In 2024, Dr. Onkka wrote 1,255 Medicare Part D claims for 219 patients. 89% of them were for generic drugs. CMS names the drug for 1,060 of them, across 20 drugs with 11 or more claims each, at $532,109 in total drug cost. In 2023, CMS named 1,030 claims across 26 drugs.

Part D claims, 20241,255
Drugs named by CMS20
Total drug cost$532,109
Part D patients219

Dr. Onkka's Part D claims by kind of drug, 2024

  • Generic1,118 claims89%
  • Brand-name and other137 claims11%

Dr. Onkka's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Onkka's Part D claims, 2024

  • Opioids6%74 of 1,255 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,0302024: 1,0603%

Drugs named by CMS: 20 in 2024, 26 in 2023.

See all prescribing by Dr. Onkka

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Patrick E. Onkka scored 95 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Onkka for performance year 2024, reported through an alternative payment model (APM). Dr. Onkka accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Onkka as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Onkka's MIPS scores, performance year 2024

  • 95of 100Final score
  • 83of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

Find rheumatologists like Dr. Onkka by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Patrick E. Onkka has 3 publications on record

Dmand AI links 3 papers to Dr. Onkka, published from 2012 to 2017. Dr. Onkka's most frequent co-authors are Lan Shu Chen, MD, Peng-Sheng Chen, MD and Michael Claude Fishbein, MD.

Papers3
Years published2012 to 2017

Dr. Onkka's papers by year, 2012 to 2017

Dr. Onkka's most frequent co-authors

Recent publications by Dr. Onkka

See all 3 publications and co-authors

See who Dr. Onkka researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Onkka works with, so you can find a warm path to the right rheumatologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Patrick E. Onkka received $1,320 in industry payments from 2018 to 2023

CMS Open Payments shows 31 general payments to Dr. Onkka from 10 drug and device companies from 2018 to 2023. Food and beverage make up the largest share, 91% of the total. Abbvie Inc. paid the most, $493.

General payments to Dr. Onkka by program year, 2018 to 2023

General payments to Dr. Onkka by kind, 2018 to 2023

$1.3Kin total
  • Food and beverage$1,19991%
  • Education$1219%

Companies that paid Dr. Onkka the most, 2018 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Onkka

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Patrick E. Onkka graduated from Indiana University School of Medicine

Dr. Onkka graduated from Indiana University School of Medicine in 2015.

  1. Medical schoolIndiana University School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Patrick E. Onkka's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Patrick E. Onkka

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Patrick E. Onkka's NPI number?

Dr. Patrick E. Onkka's NPI number is 1407235518. It was assigned on May 21, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Patrick E. Onkka?

Dr. Patrick E. Onkka is a rheumatologist in Lake Forest, Illinois. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).

Where does Dr. Patrick E. Onkka practice?

Dr. Onkka practices at 800 N Westmoreland Rd Ste 201 Suite 201, Lake Forest, IL 60045. Dr. Onkka's primary practice is Northwestern Medical Group in Lake Forest, Illinois. Dmand AI also links Dr. Onkka to 4 hospitals.

What is Dr. Patrick E. Onkka's office phone number?

The practice phone on file for Dr. Onkka is (847) 535-7647.

What is Dr. Patrick E. Onkka's medical license number?

Dr. Onkka holds Illinois license 036-145886.

Which hospitals is Dr. Patrick E. Onkka affiliated with?

Dr. Onkka is affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital. Dmand AI links Dr. Onkka to 4 more hospitals.

What medical group is Dr. Patrick E. Onkka part of?

Dr. Onkka is linked to Northwestern Medical Faculty Foundation.

Does Dr. Patrick E. Onkka accept Medicare?

Yes. CMS data shows Dr. Onkka billed Medicare for 75,408 services in 2024, and Dr. Onkka accepts Medicare assignment.

Does Dr. Patrick E. Onkka offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Onkka as offering telehealth services.

What is Dr. Patrick E. Onkka's MIPS score?

Dr. Onkka's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Patrick E. Onkka see?

CMS counts 691 Medicare patients who saw Dr. Onkka in 2024, with an average age of 75.

What services does Dr. Patrick E. Onkka bill to Medicare?

In 2024, Dr. Onkka's most billed Medicare services were injected or infused drug (J1439), injected or infused drug (J0897) and injected or infused drug (J3111).

Where did Dr. Patrick E. Onkka go to medical school?

Dr. Onkka graduated from Indiana University School of Medicine in 2015.

What drugs does Dr. Patrick E. Onkka prescribe most?

In 2024 Medicare Part D data, Dr. Onkka's most prescribed drugs by claims were Prednisone, Hydroxychloroquine Sulfate and Methotrexate.

Has Dr. Patrick E. Onkka received payments from drug or device companies?

CMS Open Payments shows $1,320 in general payments to Dr. Onkka from 10 companies from 2018 to 2023. The largest total came from Abbvie Inc.

How long has Dr. Patrick E. Onkka been practicing?

Dr. Onkka graduated from medical school in 2015, 11 years ago.

Does Dr. Patrick E. Onkka do research?

Dmand AI links 3 publications to Dr. Onkka, published from 2012 to 2017.

Who does Dr. Patrick E. Onkka publish with?

Dr. Onkka's most frequent co-authors are Lan Shu Chen, MD (2 shared papers), Peng-Sheng Chen, MD (1 shared paper) and Michael Claude Fishbein, MD (1 shared paper).

Selling to rheumatology practices?

See rheumatologists in Illinois by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)