NPPES file of Aug 9, 2026

Phillip J. Diamond, M.D.

Obstetrics & Gynecology Physician · Chula Vista, CA

Phillip J. Diamond, M.D. is an obstetrics & gynecology physician with a practice address in Chula Vista, California, and NPI 1427068865, issued on Aug 8, 2006. Check the license (California G75431, as entered in NPPES) on the Medical Board of California; 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
1427068865
Name
Phillip J. Diamond
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
G75431 CA
Self-reported in NPPES; status is on the state search
Practice location
1400 E Palomar St, Chula Vista, CA 91913
Phone
(858) 499-2702
Enumerated
Aug 8, 2006
Record last updated
Jun 18, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(619) 397-3378
Medicaid ID
00G754310 CA
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 obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →

Also registered at 1400 E Palomar St

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

  1. Lina Amini, M.D.Ophthalmic Plastic and Reconstructive Surgery Physician1063625374
  2. Melanie Angeles, PTPhysical Therapist1558499194
  3. Michael Antos, M.D.Pediatrics Physician1891808929
  4. Nasser Bayati, M.D.Hospitalist Physician1902851744
  5. Farschad Birdjandi, M.D.Internal Medicine Physician1205823929
  6. Oscar Bolch, M.D.Obstetrics & Gynecology Physician1144238361

Verify Phillip J. Diamond in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G75431    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
Open 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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Phillip J. Diamond among 5,088 obstetrics & gynecology physician records in California

Phillip J. Diamond, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% 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 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 52% newer
  • In a Medicare fileNo · 74% of these records are
  • In the CMS Doctors and Clinicians fileNo · 53% of these records are
  • Record last updated2013 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in California

There are 5,088 obstetrics & gynecology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 5,088 in California → Every provider in Chula Vista → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Oscar Bolch, M.D.Chula Vista, CA 919131144238361
  2. Keri Cowles, MDChula Vista, CA 919131306425939
  3. Blair Henderson, M.D.Chula Vista, CA 919131528227998
  4. Tammy Rouleau, N.P.Chula Vista, CA 919131881607646
  5. Mimi Shaffer, M.D.Chula Vista, CA 919131568758928
  6. Latisa Carson, M.D.Chula Vista, CA 919141245229129
  7. Schubert AtigaChula Vista, CA 919111033138714
  8. Cristina Flores, MDChula Vista, CA 919111942312996

Common questions

What is Phillip J. Diamond, M.D.'s NPI number?

Phillip J. Diamond, M.D.'s National Provider Identifier (NPI) is 1427068865, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Phillip J. Diamond, M.D. located?

The NPPES record lists a practice address at 1400 E Palomar St, Chula Vista, CA, 91913. Phone: (858) 499-2702. Providers update this record themselves, so call before visiting.

How can I verify Phillip J. Diamond, M.D.'s license?

NPPES lists California license number G75431, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.