Leonard J. Marks, M.D.
Pediatrics Physician · Yuba City, CA
Leonard J. Marks, M.D. is a pediatrics physician with a practice address in Yuba City, California, and NPI 1427065275, issued on Aug 2, 2006. Check the license (California G28800, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Leonard J. Marks
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- G28800 CA
Self-reported in NPPES; status is on the state search - Practice location
- 480 Plumas Blvd, Yuba City, CA 95991
- Phone
- (530) 749-3326
- Enumerated
- Aug 2, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (530) 749-3197
- Medicaid ID
- 00G288000 CA
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 480 Plumas Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nindya Burhan, M.D.Pediatrics Physician1235161795
- Ashlyn Carmack, PA-CMedical Physician Assistant1699133504
- Wilmajoan Degraaf-Olson, FNPNurse Practitioner1649290719
- Arnold Gold, M.D.Pediatrics Physician1346260239
- Viviana Gonzales, RDNRegistered Dietitian1700501780
Verify Leonard J. Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G28800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Leonard J. Marks among 9,272 pediatrics physician records in California
Leonard J. Marks, M.D. is one of 9,272 pediatrics physician records with a practice address in California. 31% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 56% newer
- In a Medicare fileNo · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2023 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
21 pediatrics physician records list a practice address in Yuba City
They are 21 of the 1,726 NPPES records with a practice address in Yuba City, and 9,272 pediatrics physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 9,272 in California → Every provider in Yuba City → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Thinn Aung, M.D.Yuba City, CA 959911528050770
- Nanak Boparai, M.D.Yuba City, CA 959911225183221
- Nindya Burhan, M.D.Yuba City, CA 959911235161795
- Arnold Gold, M.D.Yuba City, CA 959911346260239
- Olga Gonzalez, MDYuba City, CA 959911063510063
- Arun Kumar, M.D.Yuba City, CA 959911639167372
- Sanjiv Midha, MDYuba City, CA 959911265476014
- Alpna Mullick, M.D.Yuba City, CA 959911285622837
Common questions
What is Leonard J. Marks, M.D.'s NPI number?
Leonard J. Marks, M.D.'s National Provider Identifier (NPI) is 1427065275, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard J. Marks, M.D. located?
The NPPES record lists a practice address at 480 Plumas Blvd, Yuba City, CA, 95991. Phone: (530) 749-3326. Providers update this record themselves, so call before visiting.
How can I verify Leonard J. Marks, M.D.'s license?
NPPES lists California license number G28800, 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.
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.