Joan Mullan, MD
Internal Medicine Physician · Chicago, IL
Joan Mullan, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1396856019, issued on Aug 31, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Joan Mullan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 211 E Chicago Ave, Chicago, IL 60611
- Phone
- (312) 944-6677
- Enumerated
- Aug 31, 2006
- Entity
- Type 1 · individual
Also registered at 211 E Chicago Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lindy BlackwellMedical Physician Assistant1942456470
- Colleen Doherty, M.D.Internal Medicine Physician1093978512
- Jennifer GongEndocrinology, Diabetes & Metabolism Physician1801079611
- Annalise James Hussain, M.D.Obstetrics & Gynecology Physician1487920302
- Aarti Mulchandani, MDObstetrics & Gynecology Physician1043411895
- David Preble, DDSDentist1013910637
Verify Joan Mullan 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
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
81 Medicare Part D claims, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Hydrochlorothiazide13 claims
- Gabapentin12 claims
- Metoprolol Succinate12 claims
- Levetiracetam11 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 practice group's Medicare quality score for 2023: 31.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
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 →
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- 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 Joan Mullan, MD's NPI number?
Joan Mullan, MD's National Provider Identifier (NPI) is 1396856019, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joan Mullan, MD located?
The NPPES record lists a practice address at 211 E Chicago Ave, Chicago, IL, 60611. Phone: (312) 944-6677. Providers update this record themselves, so call before visiting.
How can I verify Joan Mullan, 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 Joan Mullan, MD prescribe under Medicare Part D?
In 2024, Joan Mullan, MD had 81 Medicare Part D claims; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Joan Mullan, MD's Medicare quality score?
The 2023 MIPS final score is 31.2 of 100, reported for the practice group. 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.