Cynthia Grinstead, DMD
Dentist · Oak Ridge, TN
Cynthia Grinstead, DMD is a dentist with a practice address in Oak Ridge, Tennessee, and NPI 1013137470, issued on Apr 26, 2007. Check the license (Tennessee 12019, as entered in NPPES) with the Tennessee board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cynthia Grinstead
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License numbers
- 12019 TN
DN13801 FL
Self-reported in NPPES; status is on the state search - Practice location
- 351 S Illinois Ave, Oak Ridge, TN 37830
- Phone
- (865) 272-2806
- Enumerated
- Apr 26, 2007
- Record last updated
- May 30, 2023
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,525 in Tennessee → Look up another NPI →
Also registered at 351 S Illinois Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sheila Mellon, RDHDental Hygienist1932849742
Verify Cynthia Grinstead in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
Search for license 12019Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% more Medicare Part D claims than the average dentist in 2024
123 Medicare Part D claims for 57 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass52 claims
- Amoxicillin13 claims
- Metronidazole11 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: $237.31
3 payments; by number, the most common kind was consulting fee; the largest payer was Align Technology, 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.
Cynthia Grinstead among 1,525 dentist records in Tennessee
Cynthia Grinstead, DMD is one of 1,525 dentist records with a practice address in Tennessee. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 24% of them.
- NPI issued2007 · 24% of these records are older, 61% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2023 · 65% 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 Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 dentist records list a practice address in Oak Ridge
They are 17 of the 904 NPPES records with a practice address in Oak Ridge, and 1,525 dentist records in Tennessee.
All 1,525 in Tennessee → Every provider in Oak Ridge → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Stephen Arehart, DDSOak Ridge, TN 378301285828665
- Anita Brown, D.D.S.Oak Ridge, TN 378301174066104
- Justin Dinsmore, DDSOak Ridge, TN 378301518585918
- Jesse Ellsworth, DMDOak Ridge, TN 378301043662778
- Julia Francois, DMDOak Ridge, TN 378301720144413
- Joseph Greer, DDSOak Ridge, TN 378301144316969
- William Harris, DDS MSOak Ridge, TN 378301467443671
- David Lee, DDSOak Ridge, TN 378301417052903
Common questions
What is Cynthia Grinstead, DMD's NPI number?
Cynthia Grinstead, DMD's National Provider Identifier (NPI) is 1013137470, issued on Apr 26, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia Grinstead, DMD located?
The NPPES record lists a practice address at 351 S Illinois Ave, Oak Ridge, TN, 37830. Phone: (865) 272-2806. Providers update this record themselves, so call before visiting.
How can I verify Cynthia Grinstead, DMD's license?
NPPES lists Tennessee license number 12019, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.
How much does Cynthia Grinstead, DMD prescribe under Medicare Part D?
In 2024, Cynthia Grinstead, DMD had 123 Medicare Part D claims for 57 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.