Registry data as of Aug 27, 2026

Joseph Mullin, DDS

General Practice Dentistry · Walnut Creek, CA

Joseph Mullin, DDS is a general practice dentistry with a practice address in Walnut Creek, California, and NPI 1831301555, issued on May 4, 2007. Check the license (California 30434, 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, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1831301555
Name
Joseph Mullin
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
30434 CA
Self-reported in NPPES; status is on the state search
Practice location
130 Petticoat LN, Walnut Creek, CA 94596
Phone
(925) 934-3395
Enumerated
May 4, 2007
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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Also registered at 130 Petticoat LN

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

  1. E. Cheng-Hsin Chang, DDSGeneral Practice Dentistry1598977225
  2. David Nisenboym, DDSDentist1821425166

Verify Joseph Mullin 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 30434
    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.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

69 general practice dentistry records list a Walnut Creek practice address

They are 69 of the 6,170 NPPES records with a Walnut Creek practice address, and 17,740 general practice dentistry records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other general practice dentistry records in California

  1. Ronald Aanerud, DDSSan Diego, CA1871752931
  2. Steven Aaronson, D.D.S.Santa Monica, CA1265455851
  3. Shahrzad Aarup, DDSPomona, CA1265784367
  4. Al Abad, DDSSan Jose, CA1104992148
  5. Erwin Abad, D.D.S.Canoga Park, CA1861590093
  6. Francine Abad, DDSSan Francisco, CA1942700810
  7. Maria Abad, D.D.S.Norwalk, CA1215006754
  8. Mark Ryan Abad, DDSDaly City, CA1770357394
  9. Sanaz Abadi, D.D.S.Los Angeles, CA1699934026
  10. Ernesto Abadilla, DDSPalm Desert, CA1508063801

Common questions

What is Joseph Mullin, DDS's NPI number?

Joseph Mullin, DDS's National Provider Identifier (NPI) is 1831301555, issued on May 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Joseph Mullin, DDS located?

The NPPES record lists a practice address at 130 Petticoat LN, Walnut Creek, CA, 94596. Phone: (925) 934-3395. Providers update this record themselves, so call before visiting.

How can I verify Joseph Mullin, DDS's license?

NPPES lists California license number 30434, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.