James Melvin Long, MD - Medicare Hematology/oncology in Vacaville, CA

James Melvin Long, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Vacaville, California. He went to University Of Texas Medical Branch At Galveston and graduated in 1984 and has 40 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Northbay Healthcare Group and his current practice location is 1020 Nut Tree Rd Ste 390, Vacaville, California. You can reach out to his office (for appointments etc.) via phone at (707) 624-8000.

James Melvin Long is licensed to practice in California (license number C50016) 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 1194821868.

Contact Information

James Melvin Long, MD
1020 Nut Tree Rd Ste 390,
Vacaville, CA 95687-4100
(707) 624-8000
(707) 624-8001

Map and Direction




Physician's Profile

Full NameJames Melvin Long
GenderMale
SpecialityHematology/oncology
Experience40 Years
Location1020 Nut Tree Rd Ste 390, Vacaville, 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 Melvin Long attended and graduated from University Of Texas Medical Branch At Galveston in 1984
  NPI Data:
  • NPI Number: 1194821868
  • Provider Enumeration Date: 09/16/2006
  • Last Update Date: 12/21/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 1355478991
  • Enrollment ID: I20100429001069

Medical Identifiers

Medical identifiers for James Melvin Long such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194821868NPI-NPPES
C50016OtherCAMEDICAL LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology C50016 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
North Bay Hospice & BereavementFairfield, CAHospice
Northbay Medical CenterFairfield, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Northbay Healthcare Group0042122244244

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 Melvin Long allows following entities to bill medicare on his behalf.
Entity NameNorthbay Healthcare Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821147786
PECOS PAC ID: 0042122244
Enrollment ID: O20031105000409

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 Melvin Long 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 Melvin Long, MD
1200 B Gale Wilson Blvd,
Fairfield, CA 94533-3552

Ph: (707) 646-5611
James Melvin Long, MD
1020 Nut Tree Rd Ste 390,
Vacaville, CA 95687-4100

Ph: (707) 624-8000

Reviews and Comments


Internal Medicine Doctors in Vacaville, CA

Dr. Jason Rohrer, M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: Po Box 4000, Vacaville, CA 95696
Phone: 707-451-0182    
Liyan Zhang, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1 Quality Dr, Vacaville, CA 95688
Phone: 707-453-5000    
Marissa C. Neis-gimenez, MD
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 1 Quality Dr, Vacaville, CA 95688
Phone: 707-453-5000    
David M Woodhouse, MD
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 770 Mason St, Vacaville, CA 95688
Phone: 707-454-5800    Fax: 707-454-5911
Richard M Tan, M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 2100 Peabody Rd., Vacaville, CA 95696
Phone: 707-451-0182    
Bethlehem Haile, M.D
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 1600 California Dr, Vacaville, CA 95687
Phone: 707-453-7007    Fax: 707-453-7009
Gregory Yervant Warner, D.O.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1010 Nut Tree Rd, Suite 100b, Vacaville, CA 95687
Phone: 707-624-7999    Fax: 707-624-7998

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.