NPPES file of Aug 9, 2026

William Arthur Growdon, M.D.

Obstetrics & Gynecology Physician · Santa Monica, CA

William Arthur Growdon, M.D. is an obstetrics & gynecology physician with a practice address in Santa Monica, California, and NPI 1427154533, issued on Sep 15, 2006. Check the license (California G30280, 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
1427154533
Name
William Arthur Growdon
Credential
M.D.
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
G30280 CA
Self-reported in NPPES; status is on the state search
Practice location
1245 16TH St, Santa Monica, CA 90404
Phone
(310) 794-7274
Enumerated
Sep 15, 2006
Record last updated
Feb 13, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicaid ID
00G302800 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 1245 16TH St

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

  1. Evan Abel, MDEndocrinology, Diabetes & Metabolism Physician1619067238
  2. Terrie Ahn, MDAllergy & Immunology Physician1093166795
  3. Jennifer BarnatoPediatric Nurse Practitioner1952605347
  4. Jessica Bernacki, PH.D.Clinical Psychologist1346598133
  5. Tristan Bickman, MDObstetrics & Gynecology Physician1245253210
  6. Doron Blumenfeld, MDGynecology Physician1619987658

Verify William Arthur Growdon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G30280    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

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William Arthur Growdon among 5,088 obstetrics & gynecology physician records in California

William Arthur Growdon, 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 updated2015 · 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 Santa Monica → Obstetrics & Gynecology Physician nationwide →

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

  1. Shamsah Amersi, M.D.Santa Monica, CA 904041699743112
  2. Tristan Bickman, MDSanta Monica, CA 904041245253210
  3. Yvonne Bohn, M.D.Santa Monica, CA 904041417058587
  4. Lawrence Bruksch, M.D.Santa Monica, CA 904041073562203
  5. Richard Frieder, MDSanta Monica, CA 904041457360687
  6. Zeina Hijazi, M.DSanta Monica, CA 904041518920974
  7. Karla Iacampo, MDSanta Monica, CA 904041154339083
  8. Lennard Kessler, MDSanta Monica, CA 904041194733014

Common questions

What is William Arthur Growdon, M.D.'s NPI number?

William Arthur Growdon, M.D.'s National Provider Identifier (NPI) is 1427154533, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Arthur Growdon, M.D. located?

The NPPES record lists a practice address at 1245 16TH St, Santa Monica, CA, 90404. Phone: (310) 794-7274. Providers update this record themselves, so call before visiting.

How can I verify William Arthur Growdon, M.D.'s license?

NPPES lists California license number G30280, 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.