James Francis Leoni, MD - Medicare Family Practice in Petaluma, CA

James Francis Leoni, MD is a medicare enrolled "Family Medicine" physician in Petaluma, California. He went to Creighton University School Of Medicine and graduated in 1983 and has 41 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Attenda Medical Group Inc and his current practice location is 104 Lynch Creek Way, Ste 10, Petaluma, California. You can reach out to his office (for appointments etc.) via phone at (707) 782-9123.

James Francis Leoni is licensed to practice in California (license number G56154) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1205936861.

Contact Information

James Francis Leoni, MD
104 Lynch Creek Way, Ste 10,
Petaluma, CA 94954-2355
(707) 782-9123
(707) 782-9622

Map and Direction




Physician's Profile

Full NameJames Francis Leoni
GenderMale
SpecialityFamily Practice
Experience41 Years
Location104 Lynch Creek Way, Petaluma, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • James Francis Leoni attended and graduated from Creighton University School Of Medicine in 1983
  NPI Data:
  • NPI Number: 1205936861
  • Provider Enumeration Date: 09/24/2006
  • Last Update Date: 02/08/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 6901830736
  • Enrollment ID: I20050921000882

Medical Identifiers

Medical identifiers for James Francis Leoni such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205936861NPI-NPPES
00G561540OtherCABS OF CALIFORNIA
P00469225OtherRR MEDICARE
1205936861MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine G56154 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
St. Joseph Home Care - Greater Sonoma CountySanta rosa, CAHome health agency
Petaluma Valley HospitalPetaluma, CAHospital
Santa Rosa Memorial HospitalSanta rosa, CAHospital
Sonoma Valley HospitalSonoma, CAHospital
Adventist Health ClearlakeClearlake, CAHospital
Novato Community HospitalNovato, CAHospital
Petaluma Post-acute RehabilitationPetaluma, CANursing home

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Attenda Medical Group Inc65072743546

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. James Francis Leoni allows following entities to bill medicare on his behalf.
Entity NameAttenda Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1740866615
PECOS PAC ID: 6507274354
Enrollment ID: O20210416000917

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. James Francis Leoni is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
James Francis Leoni, MD
3536 Mendocino Ave, Ste 200,
Santa Rosa, CA 95403-3634

Ph: (707) 525-6485
James Francis Leoni, MD
104 Lynch Creek Way, Ste 10,
Petaluma, CA 94954-2355

Ph: (707) 782-9123

Reviews and Comments


Family Medicine Doctors in Petaluma, CA

Daniel G White, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 3900 Lakeville Hwy, Petaluma, CA 94954
Phone: 707-765-3900    
Dr. Lana Ngoc Nguyen, M.D.
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Medicare: Not Enrolled in Medicare
Practice Location: 3835 Cypress Dr, Suite 102, Petaluma, CA 94954
Phone: 707-765-2425    Fax: 707-765-3974
Dr. Andrew Burns Ashcroft, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1179 N Mcdowell Blvd, Petaluma, CA 94954
Phone: 707-559-7500    Fax: 707-559-7510
Audra Lehman, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 1301 Southpoint Blvd, Petaluma, CA 94954
Phone: 707-559-7500    Fax: 707-559-7570
Kelly Pfeifer, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 1301 Southpoint Blvd, Petaluma, CA 94954
Phone: 707-559-7500    Fax: 707-559-7570
Dr. Lisa Feth Pearson, M.D.
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 1179 N Mcdowell Blvd, Petaluma, CA 94954
Phone: 707-559-7500    Fax: 707-559-7620
Dr. Leah Beth Rorvig, M.D., M.S.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 1179 N Mcdowell Blvd, Petaluma, CA 94954
Phone: 707-559-7500    Fax: 707-559-7620

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.