Ryan K Ah San, PA-C - Medicare Physician Assistant in Rancho Santa Margarita, CA

Ryan K Ah San, PA-C is a medicare enrolled "Physician Assistant - Medical" in Rancho Santa Margarita, California. He graduated from nursing school in 2000 and has 24 years of diverse experience with area of expertise as Physician Assistant. He is a member of the group practice Memorialcare Medical Foundation and his current practice location is 29472 Avenida De Las Bandera, Rancho Santa Margarita, California. You can reach out to his office (for appointments etc.) via phone at (949) 459-9968.

Ryan K Ah San is licensed to practice in California (license number PA15744) 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 1013181346.

Contact Information

Ryan K Ah San, PA-C
29472 Avenida De Las Bandera,
Rancho Santa Margarita, CA 92688-2651
(949) 459-9968
(949) 766-2565

Map and Direction




Provider's Profile

Full NameRyan K Ah San
GenderMale
SpecialityPhysician Assistant
Experience24 Years
Location29472 Avenida De Las Bandera, Rancho Santa Margarita, 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:
  • Ryan K Ah San graduated from nursing school in 2000
  NPI Data:
  • NPI Number: 1013181346
  • Provider Enumeration Date: 04/17/2008
  • Last Update Date: 03/09/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 0042384919
  • Enrollment ID: I20080811000649

Medical Identifiers

Medical identifiers for Ryan K Ah San such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1013181346NPI-NPPES
PA15744OtherCASTATE LICENSE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363AM0700XPhysician Assistant - Medical PA15744 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Memorialcare Saddleback Medical CenterLaguna hills, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Memorialcare Medical Foundation8729277314384

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. Ryan K Ah San 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
Ryan K Ah San, PA-C
17360 Brookhurst St, Attn: Mcmf - Credentialing Department,
Fountain Valley, CA 92708-3720

Ph: () -
Ryan K Ah San, PA-C
29472 Avenida De Las Bandera,
Rancho Santa Margarita, CA 92688-2651

Ph: (949) 459-9968

Reviews and Comments


Physician Assistant Nurses in Rancho Santa Margarita, CA

Barbara Witowska, MS PAC
Physician Assistant
Medicare: Not Enrolled in Medicare
Practice Location: 22032 El Paseo Ste 130, Rancho Santa Margarita, CA 92688
Phone: 949-589-9112    Fax: 949-589-9338
Sonja Harangozo, PA-C
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Medicare: Not Enrolled in Medicare
Practice Location: 12 Rana, Rancho Santa Margarita, CA 92688
Phone: 949-425-8541    
Mr. Robert Duane Frost, PA-C
Physician Assistant
Medicare: Accepting Medicare Assignments
Practice Location: 22431 Antonio Pkwy # B160-613, Rancho Santa Margarita, CA 92688
Phone: 855-727-2251    Fax: 855-727-2251
Martha Galli, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 29829 Santa Margarita Pkwy, Suite 500, Rancho Santa Margarita, CA 92688
Phone: 949-858-3376    
Kyle Green, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 22431 Antonio Pkwy # B160-613, Rancho Santa Margarita, CA 92688
Phone: 855-727-2251    Fax: 855-727-2251
Rena Alexa Palmer, PA-C
Physician Assistant
Medicare: Medicare Enrolled
Practice Location: 11 Porcelana, Rancho Santa Margarita, CA 92688
Phone: 949-616-4501    

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.