Susan Ignatius, MD
Internal Medicine Physician · Carol Stream, IL
Susan Ignatius, MD is an internal medicine physician with a practice address in Carol Stream, Illinois, and NPI 1649374935, issued on Sep 8, 2006. Check the license (Illinois 036090377, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Susan Ignatius
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036090377 IL
Self-reported in NPPES; status is on the state search - Practice location
- 501 Thornhill Dr, Carol Stream, IL 60188
- Phone
- (630) 668-3210
- Enumerated
- Sep 8, 2006
- Entity
- Type 1 · individual
Also registered at 501 Thornhill Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Susan Ignatius in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036090377Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
4.2 times the Medicare Part D claims of the average internal medicine physician in 2024
11,581 Medicare Part D claims for 908 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 88 claims were for opioids.
Most prescribed
- Amlodipine Besylate839 claims
- Atorvastatin Calcium811 claims
- Losartan Potassium667 claims
- Rosuvastatin Calcium538 claims
- Levothyroxine Sodium449 claims
- Metoprolol Succinate418 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The Medicare quality score for 2023: 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $248.72
2 payments, mostly food and beverage; the largest payer was Lilly USA, LLC. The 65,274 providers of this specialty with any payment received $2,536.66 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital or facility affiliation
- Central Dupage Physician GroupCarol Stream, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
9 internal medicine physician records list a Carol Stream practice address
They are 9 of the 383 NPPES records with a Carol Stream practice address, and 8,522 internal medicine physician records in Illinois.
All 9 in Carol Stream → All 8,522 in Illinois → Every provider in Carol Stream →
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Pamela Abadi, D.O.Winfield, IL1588820179
- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Misha Abbasi, MDChicago, IL1770111635
Common questions
What is Susan Ignatius, MD's NPI number?
Susan Ignatius, MD's National Provider Identifier (NPI) is 1649374935, issued on Sep 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan Ignatius, MD located?
The NPPES record lists a practice address at 501 Thornhill Dr, Carol Stream, IL, 60188. Phone: (630) 668-3210. Providers update this record themselves, so call before visiting.
How can I verify Susan Ignatius, MD's license?
NPPES lists Illinois license number 036090377, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Susan Ignatius, MD prescribe under Medicare Part D?
In 2024, Susan Ignatius, MD had 11,581 Medicare Part D claims for 908 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Susan Ignatius, MD's Medicare quality score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.