Melissa N Loja, MD - Medicare Vascular Surgery in Fairfield, CA

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Melissa N Loja, MD is a medicare enrolled "Surgery - Vascular Surgery" physician in Fairfield, California. She went to University Of California, Davis School Of Medicine and graduated in 2012 and has 14 years of diverse experience with area of expertise as Vascular Surgery. She is a member of the group practice Northbay Healthcare Group, Adventist Health Physicians Network, Providence Medical Foundation and her current practice location is 1860 Pennsylvania Ave Ste 120, Fairfield, California. You can reach out to her office (for appointments etc.) via phone at (707) 646-4400.

Melissa N Loja is licensed to practice in California (license number A127991) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1578826749.

Contact Information

Melissa N Loja, MD
1860 Pennsylvania Ave Ste 120,
Fairfield, CA 94533-3550
(707) 646-4400
Not Available

Map and Direction




Physician's Profile

Full NameMelissa N Loja
GenderFemale
SpecialityVascular Surgery
Experience14 Years
Location1860 Pennsylvania Ave Ste 120, Fairfield, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Melissa N Loja attended and graduated from University Of California, Davis School Of Medicine in 2012
  NPI Data:
  • NPI Number: 1578826749
  • Provider Enumeration Date: 06/21/2012
  • Last Update Date: 06/24/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 4486920600
  • Enrollment ID: I20171016002476

Medical Identifiers

Medical identifiers for Melissa N Loja such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578826749NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2086S0129XSurgery - Vascular Surgery A127991 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northbay Medical CenterFairfield, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Northbay Healthcare Group0042122244293
Adventist Health Physicians Network3274580972572
Providence Medical Foundation89219932051329

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. Melissa N Loja allows following entities to bill medicare on her behalf.
Entity NameNorthbay Healthcare Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1821147786
PECOS PAC ID: 0042122244
Enrollment ID: O20031105000409
Entity NameJohn Muir Physician Network
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841407665
PECOS PAC ID: 6608789813
Enrollment ID: O20031226000143
Entity NameProvidence Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285890624
PECOS PAC ID: 8921993205
Enrollment ID: O20040216001346
Entity NameRideout Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1720088354
PECOS PAC ID: 9234036088
Enrollment ID: O20040610000983
Entity NameAdventist Health Physicians Network
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063718583
PECOS PAC ID: 3274580972
Enrollment ID: O20050407000633
Entity NameJohn Muir Trauma Physicians Billing Service
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1093864837
PECOS PAC ID: 3476542515
Enrollment ID: O20050420001452
Entity NameDiablo Podiatry
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831770189
PECOS PAC ID: 5991744161
Enrollment ID: O20050428000652
Entity NameEast Bay Cardiovascular And Thoracic Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073647202
PECOS PAC ID: 9032290770
Enrollment ID: O20080118000426

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. Melissa N Loja 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
Melissa N Loja, MD
1860 Pennsylvania Ave Ste 120,
Fairfield, CA 94533-3550

Ph: (707) 646-4400		Melissa N Loja, MD
1860 Pennsylvania Ave Ste 120,
Fairfield, CA 94533-3550

Ph: (707) 646-4400

Reviews and Comments


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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).

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