Dena Toby Marcus, DDS
Dentist · Sonoma, CA
Dena Toby Marcus, DDS is a dentist with a practice address in Sonoma, California, and NPI 1316145147, issued on Jul 3, 2007. Check the license (California 51970, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dena Toby Marcus
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 51970 CA
Self-reported in NPPES; status is on the state search - Practice location
- 644 3RD St W, Sonoma, CA 95476
- Phone
- (707) 996-7775
- Enumerated
- Jul 3, 2007
- Record last updated
- Jan 28, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (707) 996-0233
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 644 3RD St W
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christopher Neale, DMDGeneral Practice Dentistry1356465090
Verify Dena Toby Marcus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 51970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% more Medicare Part D claims than the average dentist in 2024
105 Medicare Part D claims for 66 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
- Amoxicillin58 claims
- Sodium Fluoride14 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: $100.00
1 payment: education; the largest payer was Straumann USA LLC. 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.
Dena Toby Marcus among 14,729 dentist records in California
Dena Toby Marcus, DDS is one of 14,729 dentist records with a practice address in California. 56% 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 18% of them.
- NPI issued2007 · 18% of these records are older, 58% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2008 · 73% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 dentist records list a practice address in Sonoma
They are 9 of the 395 NPPES records with a practice address in Sonoma, and 14,729 dentist records in California.
All 14,729 in California → Every provider in Sonoma → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Richard Daffurn, D.D.S.Sonoma, CA 954761407956345
- Alexander Ivanoff, DDSSonoma, CA 954761013018274
- Peter Meyerhof, D.D.S.Sonoma, CA 954761477784890
- Riley Oliver, DDSSonoma, CA 954761215766787
- Cherise Wong, D.D.S.Sonoma, CA 954761619027083
- Bradd Yoshioka, DDSSonoma, CA 954761780017673
- Larry Ford, DDSSebastopol, CA 954721184845950
- Stephanie Kahle, DDSSebastopol, CA 954721467527564
Common questions
What is Dena Toby Marcus, DDS's NPI number?
Dena Toby Marcus, DDS's National Provider Identifier (NPI) is 1316145147, issued on Jul 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Dena Toby Marcus, DDS located?
The NPPES record lists a practice address at 644 3RD St W, Sonoma, CA, 95476. Phone: (707) 996-7775. Providers update this record themselves, so call before visiting.
How can I verify Dena Toby Marcus, DDS's license?
NPPES lists California license number 51970, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Dena Toby Marcus, DDS prescribe under Medicare Part D?
In 2024, Dena Toby Marcus, DDS had 105 Medicare Part D claims for 66 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.