NPPES file of Aug 9, 2026

Michael Arthur Singer

Obstetrics & Gynecology Physician · Oxnard, CA

Michael Arthur Singer is an obstetrics & gynecology physician with a practice address in Oxnard, California, and NPI 1700806957, issued on Jul 20, 2006. Check the license (California A83633, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1700806957
Name
Michael Arthur Singer
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
A83633 CA
Self-reported in NPPES; status is on the state search
Practice location
2600 E Vineyard Ave, Oxnard, CA 93036
Phone
(805) 436-3444
Enumerated
Jul 20, 2006
Record last updated
Sep 9, 2024
Fax
(805) 485-4160
Medicare enrollment
Enrolled (PECOS I20100518000452); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 2001
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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Also registered at 2600 E Vineyard Ave

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

  1. Sara ArellanoClinical Social Worker1093245151
  2. Manuel BeltranInternal Medicine Physician1538705462
  3. Windy BromleyWomen's Health Nurse Practitioner1174083984
  4. Claudio Cardenas, FNPFamily Nurse Practitioner1033882295
  5. Carrie ChenDentist1063086171
  6. Timothy Chen, MDFamily Medicine Physician1720152002

Verify Michael Arthur Singer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A83633
    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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93% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

12 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.

  1. Michael Singer12
  2. Specialty average165

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Clinicas Del Camino Real IncOxnard, CA

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

Michael Arthur Singer among 5,088 obstetrics & gynecology physician records in California

Michael Arthur Singer 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. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 52% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated2001 · median 2004 among the 2,700 with a school on file
  • Record last updated2024 · 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.

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

  1. Aimee Brecht-Doscher, M. D.Oxnard, CA 930361689747198
  2. Afshan Ghiai Fatemi, MDOxnard, CA 930361902984883
  3. Lindsay Gould, MDOxnard, CA 930361760064638
  4. Michael Green, M.D.Oxnard, CA 930361780631002
  5. Patricia Lanter, MDOxnard, CA 930361679501993
  6. Michelle Marine, M.D.Oxnard, CA 930361114976149
  7. Jennifer Mikhail, DOOxnard, CA 930361457854770
  8. Todd MonroeOxnard, CA 930361528192754

Common questions

What is Michael Arthur Singer's NPI number?

Michael Arthur Singer's National Provider Identifier (NPI) is 1700806957, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael Arthur Singer located?

The NPPES record lists a practice address at 2600 E Vineyard Ave, Oxnard, CA, 93036. Phone: (805) 436-3444. Providers update this record themselves, so call before visiting.

How can I verify Michael Arthur Singer's license?

NPPES lists California license number A83633, 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.

How much does Michael Arthur Singer prescribe under Medicare Part D?

In 2024, Michael Arthur Singer had 12 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions 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.