Provider Profile
Diana Marks Williams
Unclaimed ProfileAbout Diana Marks Williams
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Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Contact Information
- (510) 923-1099
- Email not available
Practice Locations
7200 BANCROFT AVE STE 267
Oakland, CA 94605
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other counselors at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What does Diana Marks Williams specialize in?
Diana Marks Williams is a counselor in Oakland, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Diana Marks Williams located?
Diana Marks Williams is listed at 7200 Bancroft Ave Ste 267, Oakland, CA 94605. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Diana Marks Williams's phone number?
The number on file is (510) 923-1099. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Diana Marks Williams's NPI number?
Diana Marks Williams's National Provider Identifier is 1457129488. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Diana Marks Williams been practicing?
Diana Marks Williams has 3+ years experience. Registered with an NPI since 2023. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Has Diana Marks Williams confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Diana Marks Williams. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.