Katherine Mary De Souza, MD
Obstetrics & Gynecology Physician · Saint Louis, MO
Katherine Mary De Souza, MD is an obstetrics & gynecology physician with a practice address in Saint Louis, Missouri, and NPI 1659614394, issued on Apr 1, 2013. Check the license (Missouri 2021032190, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Katherine Mary De Souza
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 2021032190 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4901 Forest Park Ave, Saint Louis, MO 63108
- Phone
- (314) 747-5470
- Enumerated
- Apr 1, 2013
- Record last updated
- Apr 17, 2025
- Fax
- (314) 362-3335
- Medicaid ID
- 200100815 MO
- Medicare enrollment
- Enrolled (PECOS I20210908000383); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 902 in Missouri → Look up another NPI →
Also registered at 4901 Forest Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Mary De Souza 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 2021032190Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
33 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Cyclobenzaprine Hcl12 claims
- Norethindrone Acetate12 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: $117.73
3 payments; by number, the most common kind was food and beverage; the largest payer was Elite Orthopedics, 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
- Washington UniversitySt Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Mary De Souza among 902 obstetrics & gynecology physician records in Missouri
Katherine Mary De Souza, MD 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 2013, is newer than 65% of them.
- NPI issued2013 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2013 · median 2007 among the 528 with a school on file
- Record last updated2025 · 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
- Elise Bardawil, MDSaint Louis, MO 631081578805826
- Robert Crist, M.D.Saint Louis, MO 631081063656916
- Shelby Dickison, MDSaint Louis, MO 631081598050643
- Maggie Dwiggins, MDSaint Louis, MO 631081306287388
- Holly Hoefgen, MDSaint Louis, MO 631081649432162
- Megan Lawlor, MDSaint Louis, MO 631081295140960
- Jennifer Reeves, MDSaint Louis, MO 631081306289640
- Joshua Rosenbloom, MDSaint Louis, MO 631081831464254
Common questions
What is Katherine Mary De Souza, MD's NPI number?
Katherine Mary De Souza, MD's National Provider Identifier (NPI) is 1659614394, issued on Apr 1, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Mary De Souza, MD located?
The NPPES record lists a practice address at 4901 Forest Park Ave, Saint Louis, MO, 63108. Phone: (314) 747-5470. Providers update this record themselves, so call before visiting.
How can I verify Katherine Mary De Souza, MD's license?
NPPES lists Missouri license number 2021032190, 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 Katherine Mary De Souza, MD prescribe under Medicare Part D?
In 2024, Katherine Mary De Souza, MD had 33 Medicare Part D claims; 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.