Dr Don D Palencia, DO - Medicare Family Medicine in San Marcos, CA

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Dr Don D Palencia, DO is a medicare enrolled "Family Medicine" physician in San Marcos, California. His current practice location is 1706 Descanso Ave, San Marcos, California. You can reach out to his office (for appointments etc.) via phone at (760) 280-2230.

Dr Don D Palencia is licensed to practice in California (license number 20A12968) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1538144241.

Contact Information

Dr Don D Palencia, DO
1706 Descanso Ave,
San Marcos, CA 92078-2514
(760) 280-2230
(760) 552-7182

Map and Direction




Physician's Profile

Full NameDr Don D Palencia
GenderMale
SpecialityFamily Medicine
Location1706 Descanso Ave, San Marcos, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1538144241
  • Provider Enumeration Date: 12/14/2005
  • Last Update Date: 09/10/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 2769429554
  • Enrollment ID: I20140423001560

Medical Identifiers

Medical identifiers for Dr Don D Palencia such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1538144241NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine 20A12968 (California)Primary

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 Don D Palencia allows following entities to bill medicare on his behalf.
Entity NameInland Urgent Care A Medical Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285829804
PECOS PAC ID: 8628021763
Enrollment ID: O20050301000282
Entity NameInland Urgent Care Of Sun City
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134155336
PECOS PAC ID: 7517906712
Enrollment ID: O20050427001398
Entity NameJ M Geiss Do Apc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063825289
PECOS PAC ID: 6103044078
Enrollment ID: O20140919001932
Entity NameCalifornia Phs Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649932781
PECOS PAC ID: 2062808645
Enrollment ID: O20220407001048

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 Don D Palencia 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 Don D Palencia, DO
1706 Descanso Ave,
San Marcos, CA 92078-2514

Ph: (760) 280-2230		Dr Don D Palencia, DO
1706 Descanso Ave,
San Marcos, CA 92078-2514

Ph: (760) 280-2230

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.