Roger E Castillo, PA-C - Medicare Physician Assistant in Walnut Creek, CA

Roger E Castillo, PA-C is a medicare enrolled "Physician Assistant" in Walnut Creek, California. His current practice location is 1450 Treat Blvd # 160, Walnut Creek, California. You can reach out to his office (for appointments etc.) via phone at (925) 296-9000.

Roger E Castillo is licensed to practice in California (license number PA55863) 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 1134235773.

Contact Information

Roger E Castillo, PA-C
1450 Treat Blvd # 160,
Walnut Creek, CA 94597
(925) 296-9000
Not Available

Map and Direction




Provider's Profile

Full NameRoger E Castillo
GenderMale
SpecialityPhysician Assistant
Location1450 Treat Blvd # 160, Walnut Creek, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1134235773
  • Provider Enumeration Date: 08/23/2006
  • Last Update Date: 07/12/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 8820060098
  • Enrollment ID: I20181203000280

Medical Identifiers

Medical identifiers for Roger E Castillo such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1134235773NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363A00000XPhysician Assistant 152 (Montana)Secondary
363A00000XPhysician Assistant PA55863 (California)Primary

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. Roger E Castillo 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
Roger E Castillo, PA-C
1450 Treat Blvd # 300,
Walnut Creek, CA 94597-2168

Ph: (925) 952-2888
Roger E Castillo, PA-C
1450 Treat Blvd # 160,
Walnut Creek, CA 94597

Ph: (925) 296-9000

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).

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