Cecily Ann Marie Arenas, FNP - Medicare Nurse Practitioner in San Marcos, CA

Cecily Ann Marie Arenas, FNP is a medicare enrolled "Nurse Practitioner - Family" in San Marcos, California. She graduated from nursing school in 2008 and has 18 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice Regents Of The University Of California and her current practice location is 1595 Grand Ave Ste 106, San Marcos, California. You can reach out to her office (for appointments etc.) via phone at (760) 736-6767.

Cecily Ann Marie Arenas is licensed to practice in California (license number NP18536) 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 1700031507.

Contact Information

Cecily Ann Marie Arenas, FNP
1595 Grand Ave Ste 106,
San Marcos, CA 92078-2450
(760) 736-6767
Not Available

Map and Direction




Provider's Profile

Full NameCecily Ann Marie Arenas
GenderFemale
SpecialityNurse Practitioner
Experience18 Years
Location1595 Grand Ave Ste 106, San Marcos, 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:
  • Cecily Ann Marie Arenas graduated from nursing school in 2008
  NPI Data:
  • NPI Number: 1700031507
  • Provider Enumeration Date: 11/20/2008
  • Last Update Date: 06/09/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 4587839261
  • Enrollment ID: I20120731000053

Medical Identifiers

Medical identifiers for Cecily Ann Marie Arenas such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1700031507NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family NP18536 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Uc San Diego Health Hillcrest - Hillcrest Med CtrSan diego, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Regents Of The University Of California35774767612079

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. Cecily Ann Marie Arenas allows following entities to bill medicare on her behalf.
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1578672184
PECOS PAC ID: 3577476761
Enrollment ID: O20031211000464

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. Cecily Ann Marie Arenas 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
Cecily Ann Marie Arenas, FNP
150 Valpreda Rd,
San Marcos, CA 92069-2973

Ph: (760) 736-6767
Cecily Ann Marie Arenas, FNP
1595 Grand Ave Ste 106,
San Marcos, CA 92078-2450

Ph: (760) 736-6767

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).

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.