NPPES file of Aug 9, 2026

Melanie Dianne Petersen

Clinical Social Worker · Oakland, CA

Melanie Dianne Petersen is a clinical social worker with a practice address in Oakland, California, and NPI 1346891512, issued on Sep 27, 2019. Check the license (California 134710, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1346891512
Name
Melanie Dianne Petersen
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
134710 CA
Self-reported in NPPES; status is on the state search
Practice location
6885 Chabot RD, Oakland, CA 94618
Phone
(858) 349-8838
Enumerated
Sep 27, 2019
Record last updated
Oct 28, 2025
Medicare enrollment
Enrolled (PECOS I20251117003431); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Melanie Dianne Petersen 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 134710
    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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Bills Medicare through one group practice

  1. Native American Health Center IncOakland, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Melanie Dianne Petersen among 36,261 clinical social worker records in California

Melanie Dianne Petersen is one of 36,261 clinical social worker records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 67% of them.

  • NPI issued2019 · 67% of these records are older, 28% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 11% of these records are
  • Graduated2019 · median 2012 among the 4,008 with a school on file
  • Record last updated2025 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,130 clinical social worker records list a practice address in Oakland

They are 1,130 of the 18,558 NPPES records with a practice address in Oakland, and 36,261 clinical social worker records in California.

The 8 clinical social worker records with the nearest ZIP codes

  1. Marsha Blachman, LCSWOakland, CA 946181861405300
  2. Brenda Bloomfield, L.C.S.W.Oakland, CA 946181922216340
  3. Catherine Cassel, M.S.W., L.C.S.W.Oakland, CA 946181639376965
  4. Leslie Connell, LCSWOakland, CA 946181346301181
  5. Dori Dubin, PSYD LCSWOakland, CA 946181124241690
  6. Robert Gorden, MSWOakland, CA 946181730397043
  7. Matthew Hicks, LCSWOakland, CA 946181033240080
  8. Elizabeth Jensen, LCSWOakland, CA 946181992904726

Common questions

What is Melanie Dianne Petersen's NPI number?

Melanie Dianne Petersen's National Provider Identifier (NPI) is 1346891512, issued on Sep 27, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Melanie Dianne Petersen located?

The NPPES record lists a practice address at 6885 Chabot RD, Oakland, CA, 94618. Phone: (858) 349-8838. Providers update this record themselves, so call before visiting.

How can I verify Melanie Dianne Petersen's license?

NPPES lists California license number 134710, 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. 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.