Alan Marshall Johnson, DDS
Dentist · O Fallon, MO
Alan Marshall Johnson, DDS is a dentist with a practice address in O Fallon, Missouri, and NPI 1417395674, issued on Jun 10, 2013. Check the license (Missouri 2012015896, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alan Marshall Johnson
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 2012015896 MO
Self-reported in NPPES; status is on the state search - Practice location
- 126 Triad Ctr W, O Fallon, MO 63366
- Phone
- (636) 978-2226
- Enumerated
- Jun 10, 2013
- Record last updated
- Jun 10, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (636) 281-1441
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,647 in Missouri → Look up another NPI →
Verify Alan Marshall Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2012015896Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average dentist in 2024
94 Medicare Part D claims for 56 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Amoxicillin31 claims
- Hydrocodone-Acetaminophen23 claims
- Chlorhexidine Gluconate13 claims
- Clindamycin Hcl12 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: $547.95
6 payments; by number, the most common kind was gift; the largest payer was Ultradent Products Inc. The 31,974 providers of this specialty with any payment received $540.36 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.
Alan Marshall Johnson among 1,647 dentist records in Missouri
Alan Marshall Johnson, DDS is one of 1,647 dentist records with a practice address in Missouri. 62% 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 54% of them.
- NPI issued2013 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2013 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 dentist records list a practice address in O Fallon
They are 32 of the 1,225 NPPES records with a practice address in O Fallon, and 1,647 dentist records in Missouri.
All 1,647 in Missouri → Every provider in O Fallon → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Ethan Biehl, DDSO Fallon, MO 633661326970336
- Michael Brown, DDSO Fallon, MO 633661427162601
- Baylie Carroll, DDSO Fallon, MO 633661528707098
- Blake Ferando, DMDO Fallon, MO 633661306295308
- Anthony Lindahl, DMDO Fallon, MO 633661417098765
- Sonu Muthuvalliappan, DMDO Fallon, MO 633661730345455
- Travis Schwarz, DMDO Fallon, MO 633661831472414
- Angela Pernoud, DDSLake Saint Louis, MO 633671659563005
Common questions
What is Alan Marshall Johnson, DDS's NPI number?
Alan Marshall Johnson, DDS's National Provider Identifier (NPI) is 1417395674, issued on Jun 10, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Alan Marshall Johnson, DDS located?
The NPPES record lists a practice address at 126 Triad Ctr W, O Fallon, MO, 63366. Phone: (636) 978-2226. Providers update this record themselves, so call before visiting.
How can I verify Alan Marshall Johnson, DDS's license?
NPPES lists Missouri license number 2012015896, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Alan Marshall Johnson, DDS prescribe under Medicare Part D?
In 2024, Alan Marshall Johnson, DDS had 94 Medicare Part D claims for 56 beneficiaries; the average among dentist prescribers was 86. 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.