Zachary Keller, MD
Obstetrics & Gynecology Physician · Saint Louis, MO
Zachary Keller, MD is an obstetrics & gynecology physician with a practice address in Saint Louis, Missouri, and NPI 1962865170, issued on Apr 4, 2016. Check the license (Missouri 2020023080, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Zachary Keller
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 2020023080 MO
Self-reported in NPPES; status is on the state search - Practice location
- 621 S New Ballas RD Ste 499A, Saint Louis, MO 63141
- Phone
- (314) 251-7477
- Enumerated
- Apr 4, 2016
- Record last updated
- Aug 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200826002522); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 902 in Missouri → Look up another NPI →
Also registered at 621 S New Ballas RD Ste 499A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Kmetz, M.D.Gynecology Physician1043528540
- Ioana MarcuObstetrics & Gynecology Physician1316393473
- Joe Shi, M.D.Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1922453760
Verify Zachary Keller 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 2020023080Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
101 Medicare Part D claims for 20 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of 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: $443.40
23 payments; by number, the most common kind was food and beverage; the largest payer was Mayne Pharma Commercial 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
- Mercy Clinic East CommunitiesSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Keller among 902 obstetrics & gynecology physician records in Missouri
Zachary Keller, 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 2016, is newer than 73% of them.
- NPI issued2016 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2016 · median 2007 among the 528 with a school on file
- Record last updated2020 · 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
- Robert Bale, M.D.Saint Louis, MO 631411477520823
- Adriena Beatty, D.O.Saint Louis, MO 631411043260979
- Robert Becker, MDSaint Louis, MO 631411609869239
- Kathryn Botney, M.D.Saint Louis, MO 631411003883430
- Alampur Kumari, M.D.Saint Louis, MO 631411760459424
- Carolyn Martin, M.D.Saint Louis, MO 631411669465134
- Marsha McBride, M.D.Saint Louis, MO 631411538136890
- Daniel McNeive, M.D.Saint Louis, MO 631411134194830
Common questions
What is Zachary Keller, MD's NPI number?
Zachary Keller, MD's National Provider Identifier (NPI) is 1962865170, issued on Apr 4, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Keller, MD located?
The NPPES record lists a practice address at 621 S New Ballas RD Ste 499A, Saint Louis, MO, 63141. Phone: (314) 251-7477. Providers update this record themselves, so call before visiting.
How can I verify Zachary Keller, MD's license?
NPPES lists Missouri license number 2020023080, 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 Zachary Keller, MD prescribe under Medicare Part D?
In 2024, Zachary Keller, MD had 101 Medicare Part D claims for 20 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.