Registry data as of Aug 27, 2026

Leah Glass, D.O.

Obstetrics & Gynecology Physician · O Fallon, MO

Leah Glass, D.O. is an obstetrics & gynecology physician with a practice address in O Fallon, Missouri, and NPI 1093942997, issued on Jun 18, 2009. Check the license (Missouri 2009015812, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1093942997
Name
Leah Glass
Credential
D.O.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
2009015812 MO
Self-reported in NPPES; status is on the state search
Practice location
300 Winding Woods Dr, O Fallon, MO 63366
Phone
(636) 240-0130
Enumerated
Jun 18, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 300 Winding Woods Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Louis Gaefke, DPMPodiatrist1629148648
  2. Alyssa Keller, M.D.Family Medicine Physician1588892665
  3. Sondra McClanahan, FNPFamily Nurse Practitioner1487747879
  4. Margaretta Mendenhall, M.D.Obstetrics & Gynecology Physician1275730111
  5. Julie Stewart, DPMFoot & Ankle Surgery Podiatrist1124165428

Verify Leah Glass in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 2009015812
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

48% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

98 Medicare Part D claims for 33 beneficiaries, against an average of 188 among the 27,363 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Leah Glass98
  2. Specialty average188

Most prescribed

  1. Fluconazole15 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: $212.04

9 payments, mostly food and beverage; the largest payer was Evofem Biosciences, Inc.. The 20,757 providers of this specialty with any payment received $1,147.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Leah Glass$212.04
  2. Specialty average$1,147.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Mercy Clinic East CommunitiesBallwin, MO

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

20 obstetrics & gynecology physician records list a O Fallon practice address

They are 20 of the 1,225 NPPES records with a O Fallon practice address, and 900 obstetrics & gynecology physician records in Missouri.

Other obstetrics & gynecology physician records in Missouri

  1. Ana Adams, DOKansas City, MO1962151613
  2. Pamela Adams, MDSaint Louis, MO1104116995
  3. Allie Adrian, MDSaint Louis, MO1205621596
  4. Mona Afrassiab, DOOsage Beach, MO1679572119
  5. Gabrielle AgcaoiliKansas City, MO1023909249
  6. Christoper Ahlering, M.D.Saint Louis, MO1760419485
  7. Sandra Ahlum, M.D.Hannibal, MO1427037183
  8. Nusrat Ahmad, MDSaint Louis, MO1114966348
  9. Natasha Ahmed, M.D.Kansas City, MO1861758716
  10. Najat Al-Sherri, M.D.Arnold, MO1407295298

Common questions

What is Leah Glass, D.O.'s NPI number?

Leah Glass, D.O.'s National Provider Identifier (NPI) is 1093942997, issued on Jun 18, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Leah Glass, D.O. located?

The NPPES record lists a practice address at 300 Winding Woods Dr, O Fallon, MO, 63366. Phone: (636) 240-0130. Providers update this record themselves, so call before visiting.

How can I verify Leah Glass, D.O.'s license?

NPPES lists Missouri license number 2009015812, 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 Leah Glass, D.O. prescribe under Medicare Part D?

In 2024, Leah Glass, D.O. had 98 Medicare Part D claims for 33 beneficiaries; the average among obstetrics & gynecology physician prescribers was 188. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.