Ronald Ackermann, MD
Internal Medicine Physician · Chicago, IL
Ronald Ackermann, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1629029210, issued on May 16, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ronald Ackermann
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 675 N Saint Clair St, Chicago, IL 60611
- Phone
- (312) 695-8630
- Enumerated
- May 16, 2006
- Entity
- Type 1 · individual
Also registered at 675 N Saint Clair St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ronald Ackermann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
58% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,164 Medicare Part D claims for 83 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Atorvastatin Calcium117 claims
- Amlodipine Besylate69 claims
- Rosuvastatin Calcium67 claims
- Levothyroxine Sodium41 claims
- Metoprolol Succinate41 claims
- Lisinopril40 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).
One hospital or facility affiliation
- Northwestern Medical Faculty FoundationChicago, 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.
3,291 internal medicine physician records list a Chicago practice address
They are 3,291 of the 63,379 NPPES records with a Chicago practice address, and 8,522 internal medicine physician records in Illinois.
All 3,291 in Chicago → All 8,522 in Illinois → Every provider in Chicago →
Other internal medicine physician records in Illinois
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- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Misha Abbasi, MDChicago, IL1770111635
Common questions
What is Ronald Ackermann, MD's NPI number?
Ronald Ackermann, MD's National Provider Identifier (NPI) is 1629029210, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Ackermann, MD located?
The NPPES record lists a practice address at 675 N Saint Clair St, Chicago, IL, 60611. Phone: (312) 695-8630. Providers update this record themselves, so call before visiting.
How can I verify Ronald Ackermann, MD's license?
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 Ronald Ackermann, MD prescribe under Medicare Part D?
In 2024, Ronald Ackermann, MD had 1,164 Medicare Part D claims for 83 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Ronald Ackermann, 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.