Marshall Cornelius Freerks, DDS
Dentist · St Louis, MO
Marshall Cornelius Freerks, DDS is a dentist with a practice address in St Louis, Missouri, and NPI 1346488236, issued on Jan 30, 2009. Check the license (Missouri 14600, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marshall Cornelius Freerks
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 14600 MO
Self-reported in NPPES; status is on the state search - Practice location
- 6744 Clayton RD., St Louis, MO 63117
- Phone
- (314) 725-5515
- Enumerated
- Jan 30, 2009
- Record last updated
- Jan 30, 2009 (not updated in 17 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,647 in Missouri → Look up another NPI →
Verify Marshall Cornelius Freerks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 14600Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average dentist in 2024
40 Medicare Part D claims for 20 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Penicillin V Potassium18 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: $33.87
1 payment: education; the largest payer was Colgate Oral Pharmaceuticals, 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.
Marshall Cornelius Freerks among 1,647 dentist records in Missouri
Marshall Cornelius Freerks, 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 2009, is newer than 42% of them.
- NPI issued2009 · 42% of these records are older, 55% 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 updated2009 · 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).
50 dentist records list a practice address in St Louis
They are 50 of the 1,420 NPPES records with a practice address in St Louis, and 1,647 dentist records in Missouri.
All 1,647 in Missouri → Every provider in St Louis → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- David Cappetta, DMDSt Louis, MO 631171992853527
- Christopher Hill, D.M.D.Saint Louis, MO 631171063561769
- Scott Klohr, D.M.D.St Louis, MO 631171962584565
- James Shortell, D.D.S.Saint Louis, MO 631171760568653
- Greg Boivin, DMDSt Louis, MO 631161992822597
- Richard Danyluck, DMDSt Louis, MO 631181588782742
- Joseph Ferguson, DDSSaint Louis, MO 631161043144082
- Tara Habibi, DMDSaint Louis, MO 631181043828627
Common questions
What is Marshall Cornelius Freerks, DDS's NPI number?
Marshall Cornelius Freerks, DDS's National Provider Identifier (NPI) is 1346488236, issued on Jan 30, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Marshall Cornelius Freerks, DDS located?
The NPPES record lists a practice address at 6744 Clayton RD., St Louis, MO, 63117. Phone: (314) 725-5515. Providers update this record themselves, so call before visiting.
How can I verify Marshall Cornelius Freerks, DDS's license?
NPPES lists Missouri license number 14600, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Marshall Cornelius Freerks, DDS prescribe under Medicare Part D?
In 2024, Marshall Cornelius Freerks, DDS had 40 Medicare Part D claims for 20 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.