Dr. Leonard J. Marks, MD
- Industry payments
- $100
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 12
- State licenses
- 2
- Practice address
- 480 Plumas Blvd Suite 204 Suite 204, Yuba City, CA 95991-5005
- Practice phone
- Call (530) 749-3307
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sutter North Medical Foundation
Primary care practice · Yuba City, California
Find Dr. Marks' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Leonard J. Marks is a pediatrician in Yuba City, California
Dr. Marks practices at Sutter North Medical Foundation in Yuba City, California.
Dr. Marks' NPI, 1427065275, was assigned on August 2, 2006. Dr. Marks graduated from University Of Cincinnati College Of Medicine in 1970. Dr. Marks holds California license G28800.
- NPI
- 1427065275NPI Registry (opens in a new tab)
- NPI enumeration date
- August 2, 2006
- NPI status
- Active
- Practice phone
- (530) 749-3307
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 82
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Leonard J. Marks practices at Sutter North Medical Foundation in Yuba City, California
Dr. Marks' primary practice is Sutter North Medical Foundation, at 480 Plumas Blvd Suite 204 Suite 204, Yuba City, CA 95991-5005. The practice phone is (530) 749-3307.
- Sutter North Medical Foundation480 Plumas Blvd Suite 204 Suite 204, Yuba City, CA 95991-5005Phone(530) 749-3307
Source: Dmand AI Affiliation Data
Dr. Leonard J. Marks is affiliated with 1 site of care and 1 medical group
Dr. Marks' primary practice is Sutter North Medical Foundation in Yuba City, California. The medical group on file is SGMF Radiology.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Leonard J. Marks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marks practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter North Medical Foundation | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Leonard J. Marks is one of 8,236 pediatricians in California
Pediatrics is Dr. Marks' primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Marks is board certified in pediatrics by the American Board of Pediatrics. Dmand AI has Dr. Marks' licenses on file in 2 states: California and Arizona.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
- Arizona license
Pediatricians near Dr. Marks
Counts of pediatricians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Leonard J. Marks' patients have a median age of 10
Across all payers, Dmand AI patient panel data puts Dr. Marks' median patient age at 10, with 46% women.
Dr. Marks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 10
Patient panel by sex, all payers
- Women46%
- Men53%
Source: Dmand AI Patient Panel Data
Dr. Leonard J. Marks received $100 in industry payments from 2016 to 2019
CMS Open Payments shows 5 general payments to Dr. Marks from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $23.
General payments to Dr. Marks by program year, 2016 to 2019
Companies that paid Dr. Marks the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leonard J. Marks graduated from University Of Cincinnati College Of Medicine
Dr. Marks graduated from University Of Cincinnati College Of Medicine in 1970.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Leonard J. Marks accepts plans from 12 insurance carriers
Dr. Marks is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +4 more carriersWith a free account
Plan types Dr. Marks accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Leonard J. Marks's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Leonard J. Marks
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Leonard J. Marks' NPI number?
Dr. Leonard J. Marks' NPI number is 1427065275. It was assigned on August 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leonard J. Marks?
Dr. Leonard J. Marks is a pediatrician in Yuba City, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Leonard J. Marks practice?
Dr. Marks practices at 480 Plumas Blvd Suite 204 Suite 204, Yuba City, CA 95991-5005. Dr. Marks' primary practice is Sutter North Medical Foundation in Yuba City, California.
What is Dr. Leonard J. Marks' office phone number?
The practice phone on file for Dr. Marks is (530) 749-3307.
What is Dr. Leonard J. Marks' medical license number?
Dr. Marks holds California license G28800, one of the licenses on file in 2 states.
Which states has Dr. Leonard J. Marks been licensed in?
Dmand AI has state licenses on file for Dr. Marks in California (1975 to 2026) and Arizona (since 1973).
What medical group is Dr. Leonard J. Marks part of?
Dr. Marks is linked to SGMF Radiology.
Is Dr. Leonard J. Marks board certified?
Yes. Dr. Marks is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. Leonard J. Marks go to medical school?
Dr. Marks graduated from University Of Cincinnati College Of Medicine in 1970.
Has Dr. Leonard J. Marks received payments from drug or device companies?
CMS Open Payments shows $100 in general payments to Dr. Marks from 5 companies from 2016 to 2019. The largest total came from Genentech, Inc.
How long has Dr. Leonard J. Marks been practicing?
Dr. Marks graduated from medical school in 1970, 56 years ago.
What insurance does Dr. Leonard J. Marks accept?
Dr. Marks is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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