Alyssa Leigh Keller, M.D.
Family Medicine Physician · O Fallon, MO
Alyssa Leigh Keller, M.D. is a family medicine physician with a practice address in O Fallon, Missouri, and NPI 1588892665, issued on Jun 26, 2009. Check the license (Missouri 2009017184, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Alyssa Leigh Keller
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 2009017184 MO
Self-reported in NPPES; status is on the state search - Practice location
- 300 Winding Woods Dr, O Fallon, MO 63366
- Phone
- (636) 978-8600
- Enumerated
- Jun 26, 2009
- Record last updated
- Jun 30, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (636) 978-8602
- Medicare enrollment
- Enrolled (PECOS I20120904000522); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Columbia School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,991 in Missouri → Look up another NPI →
Also registered at 300 Winding Woods Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Louis Gaefke, DPMPodiatrist1629148648
- Leah Glass, D.O.Obstetrics & Gynecology Physician1093942997
- Sondra McClanahan, FNPFamily Nurse Practitioner1487747879
- Margaretta Mendenhall, M.D.Obstetrics & Gynecology Physician1275730111
- Julie Stewart, DPMFoot & Ankle Surgery Podiatrist1124165428
Verify Alyssa Leigh 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 2009017184Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average family medicine physician in 2024
3,832 Medicare Part D claims for 304 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 73 claims were for opioids.
Most prescribed
- Atorvastatin Calcium337 claims
- Lisinopril224 claims
- Losartan Potassium195 claims
- Amlodipine Besylate177 claims
- Levothyroxine Sodium154 claims
- Rosuvastatin Calcium145 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: $792.30
44 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 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 CommunitiesO Fallon, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alyssa Leigh Keller among 2,991 family medicine physician records in Missouri
Alyssa Leigh Keller, M.D. is one of 2,991 family medicine physician records with a practice address in Missouri. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 39% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2009 · median 2006 among the 1,778 with a school on file
- Record last updated2012 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 family medicine physician records list a practice address in O Fallon
They are 37 of the 1,225 NPPES records with a practice address in O Fallon, and 2,991 family medicine physician records in Missouri.
All 2,991 in Missouri → Every provider in O Fallon → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Amy Grawey, M.D.O Fallon, MO 633661083824684
- Michael Hemmersmeier, D.O.O Fallon, MO 633661366404832
- Leonard Hoffmann, M.D.O Fallon, MO 633661174585665
- Sarah Jackson, DOO Fallon, MO 633661134858392
- Wan In Koo, D.O.O Fallon, MO 633661871554865
- Amritpal LallO Fallon, MO 633661730996844
- Maryam Naemi, D.O.O Fallon, MO 633661619938628
- John O'Connor, M.D.O Fallon, MO 633661356392310
Common questions
What is Alyssa Leigh Keller, M.D.'s NPI number?
Alyssa Leigh Keller, M.D.'s National Provider Identifier (NPI) is 1588892665, issued on Jun 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Alyssa Leigh Keller, M.D. located?
The NPPES record lists a practice address at 300 Winding Woods Dr, O Fallon, MO, 63366. Phone: (636) 978-8600. Providers update this record themselves, so call before visiting.
How can I verify Alyssa Leigh Keller, M.D.'s license?
NPPES lists Missouri license number 2009017184, 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 Alyssa Leigh Keller, M.D. prescribe under Medicare Part D?
In 2024, Alyssa Leigh Keller, M.D. had 3,832 Medicare Part D claims for 304 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.