Michael B. Chen, M.D.
Obstetrics & Gynecology Physician · Saint Louis, MO
Michael B. Chen, M.D. is an obstetrics & gynecology physician with a practice address in Saint Louis, Missouri, and NPI 1023056355, issued on Jun 2, 2006. Check the license (Missouri 108742, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Michael B. Chen
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 108742 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3015 N Ballas RD, Saint Louis, MO 63131
- Phone
- (314) 996-5000
- Enumerated
- Jun 2, 2006
- Record last updated
- Apr 15, 2026
- Medicare enrollment
- Enrolled (PECOS I20250924001434); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 902 in Missouri → Look up another NPI →
Also registered at 3015 N Ballas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimberly Abeln, CRNACertified Registered Nurse Anesthetist1851566970
- Nancy Adams, FNP - BCFamily Nurse Practitioner1497280796
- Emmanuel Agyemang, MDHospitalist Physician1235831975
- Ayaz Ahmad, MDInternal Medicine Physician1629573142
- Bazgha AhmadHospitalist Physician1841517158
- Nusrat Ahmad, MDObstetrics & Gynecology Physician1114966348
Verify Michael B. Chen 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 108742Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
143 Medicare Part D claims for 65 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Atorvastatin Calcium25 claims
- Losartan Potassium16 claims
- Tamsulosin Hcl14 claims
- Hydrocodone-Acetaminophen11 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: $21.34
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Obhg Illinois SCCarbondale, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael B. Chen among 902 obstetrics & gynecology physician records in Missouri
Michael B. Chen, M.D. is one of 902 obstetrics & gynecology physician records with a practice address in Missouri. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 54% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1995 · median 2007 among the 528 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
332 obstetrics & gynecology physician records list a practice address in Saint Louis
They are 332 of the 27,605 NPPES records with a practice address in Saint Louis, and 902 obstetrics & gynecology physician records in Missouri.
All 902 in Missouri → Every provider in Saint Louis → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Nusrat Ahmad, MDSaint Louis, MO 631311114966348
- John Anstey, M.D.Saint Louis, MO 631311669470878
- Frederick Durer, M.D.Saint Louis, MO 631311982601027
- Julia Hoffman, MDSaint Louis, MO 631311477585669
- Mark Jostes, MDSaint Louis, MO 631311477518595
- Jacob Klein, MDSt Louis, MO 631311194780213
- Claudia Krasnoff, MDSaint Louis, MO 631311245294081
- Christine Ladd, MDSaint Louis, MO 631311962466896
Common questions
What is Michael B. Chen, M.D.'s NPI number?
Michael B. Chen, M.D.'s National Provider Identifier (NPI) is 1023056355, issued on Jun 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael B. Chen, M.D. located?
The NPPES record lists a practice address at 3015 N Ballas RD, Saint Louis, MO, 63131. Phone: (314) 996-5000. Providers update this record themselves, so call before visiting.
How can I verify Michael B. Chen, M.D.'s license?
NPPES lists Missouri license number 108742, 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 Michael B. Chen, M.D. prescribe under Medicare Part D?
In 2024, Michael B. Chen, M.D. had 143 Medicare Part D claims for 65 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.