NPPES file of Aug 9, 2026

Dennis Marshall Guest, D.D.S.

General Practice Dentistry · Oakland, CA

Dennis Marshall Guest, D.D.S. is a general practice dentistry with a practice address in Oakland, California, and NPI 1801917935, issued on Apr 3, 2007. Check the license (California 24023, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801917935
Name
Dennis Marshall Guest
Credential
D.D.S.
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
24023 CA
Self-reported in NPPES; status is on the state search
Practice location
4341 Piedmont Ave, Oakland, CA 94611
Phone
(510) 654-6714
Enumerated
Apr 3, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(510) 420-8357
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →

Also registered at 4341 Piedmont Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Veronica Ang-Vong, LA.C, DIPL.OMAcupuncturist1902183973
  2. Steven Chang, DPTPhysical Therapist1487941654
  3. Laura Chapdelaine, D.P.T.Physical Therapist1255720330
  4. Richard Gabor, D.D.S.General Practice Dentistry1609922590
  5. Candice Golightly, OTOccupational Therapist1487994000
  6. Kirstin Lindquist, L.AC.Acupuncturist1366774085

Verify Dennis Marshall Guest in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 24023    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Dennis Marshall Guest among 17,852 general practice dentistry records in California

Dennis Marshall Guest, D.D.S. is one of 17,852 general practice dentistry records with a practice address in California. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 29% of them.

  • NPI issued2007 · 29% of these records are older, 40% newer
  • In a Medicare fileNo · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 79% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

General Practice Dentistry providers in California

There are 17,852 general practice dentistry records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 17,852 in California → Every provider in Oakland → General Practice Dentistry nationwide →

The 8 general practice dentistry records with the nearest ZIP codes

  1. Anne Becker, D.D.S.Oakland, CA 946111497896088
  2. Kenneth Childers, DDSOakland, CA 946111447275672
  3. Purnell Davis, DDS.Oakland, CA 946111679719520
  4. Katie Fogarty, DMDOakland, CA 946111861704124
  5. Richard Gabor, D.D.S.Oakland, CA 946111609922590
  6. Jennifer Gronbach, D.D.S.Oakland, CA 946111447356670
  7. Sepand Hokmabadi, D.D.SOakland, CA 946111689883563
  8. Yvonne Hoang Yen Jordan, DDSOakland, CA 946111255716957

Common questions

What is Dennis Marshall Guest, D.D.S.'s NPI number?

Dennis Marshall Guest, D.D.S.'s National Provider Identifier (NPI) is 1801917935, issued on Apr 3, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Dennis Marshall Guest, D.D.S. located?

The NPPES record lists a practice address at 4341 Piedmont Ave, Oakland, CA, 94611. Phone: (510) 654-6714. Providers update this record themselves, so call before visiting.

How can I verify Dennis Marshall Guest, D.D.S.'s license?

NPPES lists California license number 24023, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.