NPPES file of Aug 9, 2026

Steven Glenn Ledesma, M.D.

Nephrology Physician · Oxnard, CA

Steven Glenn Ledesma, M.D. is a nephrology physician with a practice address in Oxnard, California, and NPI 1386718799, issued on Nov 17, 2006. Check the license (California A78553, 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
1386718799
Name
Steven Glenn Ledesma
Credential
M.D.
Primary taxonomy
Nephrology Physician 207RN0300X
License number
A78553 CA
Self-reported in NPPES; status is on the state search
Practice location
1200 W Gonzales RD, Oxnard, CA 93036
Phone
(805) 278-9094
Enumerated
Nov 17, 2006
Record last updated
Jan 14, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(805) 278-8964
Medicaid ID
ZZZ75566Z CA
Medicare enrollment
Enrolled (PECOS I20110105000632); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 1997
Telehealth
Offers telehealth (CMS)
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 1200 W Gonzales RD

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

  1. Nicholas Bednarski, M.D.Nephrology Physician1457425860
  2. Frank Chieu, M.D.Nephrology Physician1235203647
  3. Ali Dana, M.D.Nephrology Physician1669561536
  4. Mariam Gyulnazaryan, PA-CPhysician Assistant1275316473
  5. Tane Liu, M.D.Nephrology Physician1588738991
  6. Koosha Mortazavi, M.D.Nephrology Physician1215966999

Verify Steven Glenn Ledesma in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A78553
    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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71% more Medicare Part D claims than the average nephrology physician in 2024

2,504 Medicare Part D claims for 323 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.

  1. Steven Ledesma2,504
  2. Specialty average1,465

Most prescribed

  1. Furosemide237 claims
  2. Amlodipine Besylate209 claims
  3. Hydralazine Hcl178 claims
  4. Sevelamer Carbonate145 claims
  5. Losartan Potassium143 claims
  6. Valsartan142 claims

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. Vista Del Mar Medical Group IncOxnard, CA

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

Steven Glenn Ledesma among 1,468 nephrology physician records in California

Steven Glenn Ledesma, M.D. is one of 1,468 nephrology physician records with a practice address in California. 88% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 48% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 77% of these records are
  • Graduated1997 · median 2001 among the 1,128 with a school on file
  • Record last updated2010 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nephrology Physician providers in California

There are 1,468 nephrology physician records in California.

The 8 nephrology physician records with the nearest ZIP codes

  1. Nicholas Bednarski, M.D.Oxnard, CA 930361457425860
  2. Frank Chieu, M.D.Oxnard, CA 930361235203647
  3. Ali Dana, M.D.Oxnard, CA 930361669561536
  4. Gregory Krastein, MDOxnard, CA 930361942358759
  5. Tane Liu, M.D.Oxnard, CA 930361588738991
  6. Hashim Mapara, MDOxnard, CA 930361306074927
  7. Koosha Mortazavi, M.D.Oxnard, CA 930361215966999
  8. Rajendra Niraula, MDOxnard, CA 930361922201003

Common questions

What is Steven Glenn Ledesma, M.D.'s NPI number?

Steven Glenn Ledesma, M.D.'s National Provider Identifier (NPI) is 1386718799, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Steven Glenn Ledesma, M.D. located?

The NPPES record lists a practice address at 1200 W Gonzales RD, Oxnard, CA, 93036. Phone: (805) 278-9094. Providers update this record themselves, so call before visiting.

How can I verify Steven Glenn Ledesma, M.D.'s license?

NPPES lists California license number A78553, 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 Steven Glenn Ledesma, M.D. prescribe under Medicare Part D?

In 2024, Steven Glenn Ledesma, M.D. had 2,504 Medicare Part D claims for 323 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.