Dr Philip Louis Marjon, MD - Medicare Hematology/oncology in San Marcos, CA

Dr Philip Louis Marjon, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in San Marcos, California. He went to University Of New Mexico School Of Medicine and graduated in 2007 and has 17 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice The Oncology Institute Ca, A Professional Corporation, California Cancer Associates For Research And Excellence Inc and his current practice location is 838 Nordahl Rd Ste 300, San Marcos, California. You can reach out to his office (for appointments etc.) via phone at (760) 747-8935.

Dr Philip Louis Marjon is licensed to practice in California (license number C175032) 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 1912234121.

Contact Information

Dr Philip Louis Marjon, MD
838 Nordahl Rd Ste 300,
San Marcos, CA 92069-3599
(760) 747-8935
(760) 466-0078

Map and Direction




Physician's Profile

Full NameDr Philip Louis Marjon
GenderMale
SpecialityHematology/oncology
Experience17 Years
Location838 Nordahl Rd Ste 300, San Marcos, 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:
  • Dr Philip Louis Marjon attended and graduated from University Of New Mexico School Of Medicine in 2007
  NPI Data:
  • NPI Number: 1912234121
  • Provider Enumeration Date: 11/09/2009
  • Last Update Date: 02/05/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 5991945693
  • Enrollment ID: I20211029001903

Medical Identifiers

Medical identifiers for Dr Philip Louis Marjon such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1912234121NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine MD14130 (Rhode Island)Secondary
207RH0003XInternal Medicine - Hematology & Oncology 253762 (Massachusetts)Secondary
207RH0003XInternal Medicine - Hematology & Oncology C175032 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The Oncology Institute Ca, A Professional Corporation569887239869
California Cancer Associates For Research And Excellence Inc802291893750

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. Dr Philip Louis Marjon allows following entities to bill medicare on his behalf.
Entity NameCalifornia Cancer Associates For Research And Excellence Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083661607
PECOS PAC ID: 8022918937
Enrollment ID: O20040108001068
Entity NameThe Oncology Institute Ca, A Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275651515
PECOS PAC ID: 5698872398
Enrollment ID: O20070514000607

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. Dr Philip Louis Marjon 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
Dr Philip Louis Marjon, MD
104 Woodmont Blvd Ste 500,
Nashville, TN 37205-2245

Ph: (615) 783-1066
Dr Philip Louis Marjon, MD
838 Nordahl Rd Ste 300,
San Marcos, CA 92069-3599

Ph: (760) 747-8935

Reviews and Comments


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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.

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