Margaret Rozier Chen, M.D,
Pediatrics Physician · Saint Louis, MO
Margaret Rozier Chen, M.D, is a pediatrics physician with a practice address in Saint Louis, Missouri, and NPI 1356752679, issued on May 9, 2014. Check the license (Missouri 2017005240, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Margaret Rozier Chen
- Credential
- M.D,
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 2017005240 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1465 S Grand Blvd, Saint Louis, MO 63104
- Phone
- (314) 268-4070
- Enumerated
- May 9, 2014
- Record last updated
- Jan 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (314) 268-4019
- Medicare enrollment
- Enrolled (PECOS I20170510002823); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,560 in Missouri → Look up another NPI →
Also registered at 1465 S Grand Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Emily Ahmad, CPNP-PCPediatric Nurse Practitioner1871875104
- Muteen Ahmed, M.B.B.S.Student in an Organized Health Care Education/Training Program1437950466
Verify Margaret Rozier 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 2017005240Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average pediatrics physician in 2024
119 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Farxiga13 claims
- Sertraline Hcl13 claims
- Atorvastatin Calcium12 claims
- Lisinopril12 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.
Bills Medicare through one group practice
- Ssm Health Care GroupSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Rozier Chen among 1,560 pediatrics physician records in Missouri
Margaret Rozier Chen, M.D, is one of 1,560 pediatrics physician records with a practice address in Missouri. 34% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 59% of them.
- NPI issued2014 · 59% of these records are older, 38% newer
- In a Medicare fileYes · 34% of these records are
- In the CMS Doctors and Clinicians fileYes · 8% of these records are
- Graduated2014 · median 2013 among the 120 with a school on file
- Record last updated2021 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
443 pediatrics physician records list a practice address in Saint Louis
They are 443 of the 27,605 NPPES records with a practice address in Saint Louis, and 1,560 pediatrics physician records in Missouri.
All 1,560 in Missouri → Every provider in Saint Louis → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Robert Bergamini, M.D.Saint Louis, MO 631041962462846
- Matthew Broom, MDSt Louis, MO 631041114967767
- Julie Ferguson, D.OSt Louis, MO 631041689602781
- Meghan Guerra, MDSaint Louis, MO 631041467407841
- Marta King, MDSaint Louis, MO 631041134135379
- Gene Labarge, M.D.St Louis, MO 631041740294149
- Nalini Mehta, MDSaint Louis, MO 631041346295490
- Jay Noffsinger, MDSaint Louis, MO 631041033130588
Common questions
What is Margaret Rozier Chen, M.D,'s NPI number?
Margaret Rozier Chen, M.D,'s National Provider Identifier (NPI) is 1356752679, issued on May 9, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Rozier Chen, M.D, located?
The NPPES record lists a practice address at 1465 S Grand Blvd, Saint Louis, MO, 63104. Phone: (314) 268-4070. Providers update this record themselves, so call before visiting.
How can I verify Margaret Rozier Chen, M.D,'s license?
NPPES lists Missouri license number 2017005240, 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 Margaret Rozier Chen, M.D, prescribe under Medicare Part D?
In 2024, Margaret Rozier Chen, M.D, had 119 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.