Nayyar Siddique, MD - Medicare Hematology/oncology in Oceanside, CA

Nayyar Siddique, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Oceanside, California. He graduated from medical school in 1989 and has 35 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice North County Oncology Medical Clinic Inc, Carris Health Llc, Northern Montana Hospital, Innovis Health Llc and his current practice location is 3617 Vista Way, Oceanside, California. You can reach out to his office (for appointments etc.) via phone at (760) 758-5770.

Nayyar Siddique is licensed to practice in California (license number A62744) 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 1497890610.

Contact Information

Nayyar Siddique, MD
3617 Vista Way,
Oceanside, CA 92056-4522
(760) 758-5770
(760) 721-8597

Map and Direction




Physician's Profile

Full NameNayyar Siddique
GenderMale
SpecialityHematology/oncology
Experience35 Years
Location3617 Vista Way, Oceanside, 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:
  • Nayyar Siddique graduated from medical school in 1989
  NPI Data:
  • NPI Number: 1497890610
  • Provider Enumeration Date: 02/21/2007
  • Last Update Date: 04/18/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 3577634369
  • Enrollment ID: I20120208000292

Medical Identifiers

Medical identifiers for Nayyar Siddique such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1497890610NPI-NPPES
00A627440MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RX0202XInternal Medicine - Medical Oncology LT20873 (North Dakota)Secondary
207RH0003XInternal Medicine - Hematology & Oncology A62744 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Tri-city Medical CenterOceanside, CAHospital
Carris Health LlcWillmar, MNHospital
Essentia HealthFargo, NDHospital
Swift County Benson HospitalBenson, MNHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North County Oncology Medical Clinic Inc82240654123
Carris Health Llc701227422839
Northern Montana Hospital226434391235
Innovis Health Llc9931298155478

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. Nayyar Siddique allows following entities to bill medicare on his behalf.
Entity NameNorth County Oncology Medical Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457486433
PECOS PAC ID: 8224065412
Enrollment ID: O20050719001194

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. Nayyar Siddique 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
Nayyar Siddique, MD
3617 Vista Way,
Oceanside, CA 92056-4522

Ph: (760) 758-5770
Nayyar Siddique, MD
3617 Vista Way,
Oceanside, CA 92056-4522

Ph: (760) 758-5770

Reviews and Comments


Internal Medicine Doctors in Oceanside, CA

Javaid Ahmed Shad, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 3923 Waring Rd Ste A, Oceanside, CA 92056
Phone: 760-724-8782    Fax: 760-842-7801
Dr. Mark K Yamanaka, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 3907 Waring Rd Ste 2, Oceanside, CA 92056
Phone: 760-941-0221    Fax: 760-941-0905
David G. Antoun, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 4002 Vista Way, Oceanside, CA 92056
Phone: 760-724-8411    
Pratan Vathesatogkit, M.D.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 3231 Waring Ct, Suite D, Oceanside, CA 92056
Phone: 760-630-4833    Fax: 760-758-1980
Ian B Butler, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 3231 Waring Ct Ste D, Oceanside, CA 92056
Phone: 760-941-0221    Fax: 760-941-0905
Dr. Christopher Davis, MD
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 200 Mercy Circle, Oceanside, CA 92055
Phone: 760-725-7410    
Dr. Brian Daniel Tran, M.D.
Hematology & Oncology
Medicare: Medicare Enrolled
Practice Location: 200 Mercy Circle, Oceanside, CA 92055
Phone: 760-725-1213    

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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