Chad Michael Ronholm, M.D.
Rheumatology Physician · Saint Louis, MO
Chad Michael Ronholm, M.D. is a rheumatology physician with a practice address in Saint Louis, Missouri, and NPI 1306027909, issued on Nov 25, 2007. Check the license (Missouri 2010026420, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Chad Michael Ronholm
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 2010026420 MO
Self-reported in NPPES; status is on the state search - Practice location
- 520 S Elm Ave, Saint Louis, MO 63119
- Phone
- (314) 645-4434
- Enumerated
- Nov 25, 2007
- Record last updated
- Mar 29, 2024
- Fax
- (314) 645-3801
- Medicare enrollment
- Enrolled (PECOS I20120725000481); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 520 S Elm Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Budd, MDRheumatology Physician1669425989
- Michael Hessel, PA-CPhysician Assistant1902312259
- Megan Isaacson-Schmid, PA-CMedical Physician Assistant1124546726
- Rachael Meuth, PA-CPhysician Assistant1225513492
- Carrie Mudd, M.D.Anesthesiology Physician1770780538
- Trisha Specter, PA-CPhysician Assistant1538552120
Verify Chad Michael Ronholm in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2010026420Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% more Medicare Part D claims than the average rheumatology physician in 2024
2,370 Medicare Part D claims for 479 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 306 claims were for opioids.
Most prescribed
- Methotrexate442 claims
- Pregabalin277 claims
- Tramadol Hcl275 claims
- Hydroxychloroquine Sulfate257 claims
- Prednisone230 claims
- Leflunomide108 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.
Industry payments in 2024: $4,062.57
212 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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.
Bills Medicare through one group practice
- Clayton Medical Associates PCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rheumatology Physician providers in Missouri
There are 151 rheumatology physician records in Missouri.
Other rheumatology physician records in Missouri
- Zaki Abou Zahr, M.D.Columbia, MO1457582108
- Anam Ahmad, MDChesterfield, MO1639739485
- Stephen Armstrong, MDSpringfield, MO1972546786
- Romila Aslam, M.D.Bridgeton, MO1407058084
- John Atkinson, MDSaint Louis, MO1245258946
- Rama Atluri, M.D.Saint Louis, MO1063507531
- Mohamed Babiker Mohamed, MDSaint Louis, MO1891140992
- Donica Baker, MD, FACRChesterfield, MO1356751176
- Keith Bernstein, MDChesterfield, MO1447273727
- Sambhawana Bhandari, MDSaint Louis, MO1821619651
Common questions
What is Chad Michael Ronholm, M.D.'s NPI number?
Chad Michael Ronholm, M.D.'s National Provider Identifier (NPI) is 1306027909, issued on Nov 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Chad Michael Ronholm, M.D. located?
The NPPES record lists a practice address at 520 S Elm Ave, Saint Louis, MO, 63119. Phone: (314) 645-4434. Providers update this record themselves, so call before visiting.
How can I verify Chad Michael Ronholm, M.D.'s license?
NPPES lists Missouri license number 2010026420, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chad Michael Ronholm, M.D. prescribe under Medicare Part D?
In 2024, Chad Michael Ronholm, M.D. had 2,370 Medicare Part D claims for 479 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.