Dionna Lomax, M.D.
Family Medicine Physician · Chicago, IL
Dionna Lomax, M.D. is a family medicine physician with a practice address in Chicago, Illinois, and NPI 1639336399, issued on May 20, 2008. Check the license (Illinois 036.125407, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Dionna Lomax
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036.125407 IL
Self-reported in NPPES; status is on the state search - Practice location
- 10834 S Doty Ave, Chicago, IL 60628
- Phone
- (312) 268-6630
- Enumerated
- May 20, 2008
- Record last updated
- Mar 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (312) 268-6628
- Medicaid ID
- 036125407 IL
- Medicare enrollment
- Enrolled (PECOS I20110309000981); accepts Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Verify Dionna Lomax 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 036.125407Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average family medicine physician in 2024
1,382 Medicare Part D claims for 334 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 38 claims were for opioids.
Most prescribed
- Atorvastatin Calcium125 claims
- Amlodipine Besylate72 claims
- Hydrochlorothiazide48 claims
- Levothyroxine Sodium46 claims
- Losartan Potassium41 claims
- Sertraline Hcl39 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.
One hospital affiliation
- Loyola University Medical CenterMaywood, IL · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Dionna Lomax among 6,215 family medicine physician records in Illinois
Dionna Lomax, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2007 · median 2006 among the 3,714 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,593 family medicine physician records list a practice address in Chicago
They are 1,593 of the 63,379 NPPES records with a practice address in Chicago, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Chicago → Family Medicine Physician nationwide →
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Common questions
What is Dionna Lomax, M.D.'s NPI number?
Dionna Lomax, M.D.'s National Provider Identifier (NPI) is 1639336399, issued on May 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Dionna Lomax, M.D. located?
The NPPES record lists a practice address at 10834 S Doty Ave, Chicago, IL, 60628. Phone: (312) 268-6630. Providers update this record themselves, so call before visiting.
How can I verify Dionna Lomax, M.D.'s license?
NPPES lists Illinois license number 036.125407, 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 Dionna Lomax, M.D. prescribe under Medicare Part D?
In 2024, Dionna Lomax, M.D. had 1,382 Medicare Part D claims for 334 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.