Cesar Castillo, MD - Medicare Hospitalist in Santa Cruz, CA

Cesar Castillo, MD is a medicare enrolled "Hospitalist" physician in Santa Cruz, California. He went to University Of California, Geffen School Of Medicine and graduated in 2005 and has 19 years of diverse experience with area of expertise as Hospitalist. He is a member of the group practice Sutter Bay Medical Foundation and his current practice location is 1661 Soquel Dr Ste D, Santa Cruz, California. You can reach out to his office (for appointments etc.) via phone at (831) 479-6603.

Cesar Castillo is licensed to practice in California (license number A100518) 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 1578735148.

Contact Information

Cesar Castillo, MD
1661 Soquel Dr Ste D,
Santa Cruz, CA 95065-1709
(831) 479-6603
Not Available

Map and Direction




Physician's Profile

Full NameCesar Castillo
GenderMale
SpecialityHospitalist
Experience19 Years
Location1661 Soquel Dr Ste D, Santa Cruz, 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:
  • Cesar Castillo attended and graduated from University Of California, Geffen School Of Medicine in 2005
  NPI Data:
  • NPI Number: 1578735148
  • Provider Enumeration Date: 03/24/2008
  • Last Update Date: 03/17/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 2163583725
  • Enrollment ID: I20081202000320

Medical Identifiers

Medical identifiers for Cesar Castillo such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578735148NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A100518 (California)Secondary
208M00000XHospitalist A100518 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Dominican HospitalSanta cruz, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Sutter Bay Medical Foundation42845387782995

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. Cesar Castillo allows following entities to bill medicare on his behalf.
Entity NameSutter Bay Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013950807
PECOS PAC ID: 4284538778
Enrollment ID: O20031125000909

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. Cesar 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
Cesar Castillo, MD
325 Distel Cir,
Los Altos, CA 94022-1408

Ph: () -
Cesar Castillo, MD
1661 Soquel Dr Ste D,
Santa Cruz, CA 95065-1709

Ph: (831) 479-6603

Reviews and Comments


Hospitalist Doctors in Santa Cruz, CA

Carter William English, MD
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 2025 Soquel Ave, Santa Cruz, CA 95062
Phone: 831-458-5820    
Dr. Sabrina A Struve, MD
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 1595 Soquel Dr Ste 400, Santa Cruz, CA 95065
Phone: 831-475-1111    Fax: 831-476-5020
Nhat Huu Hoang, DO
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1595 Soquel Dr Ste 400, Santa Cruz, CA 95065
Phone: 831-475-1111    Fax: 831-476-5020
John L Strutner, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1595 Soquel Dr Ste 400, Santa Cruz, CA 95065
Phone: 831-475-1111    Fax: 831-476-5020
Dr. Miguel C Amurao, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1595 Soquel Dr Ste 400, Santa Cruz, CA 95065
Phone: 831-475-1111    Fax: 831-476-5020
Eric Day, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 1595 Soquel Dr Ste 400, Santa Cruz, CA 95065
Phone: 831-475-1111    Fax: 831-476-5020
Lindsy Elizabeth Martinez, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 2025 Soquel Ave, Santa Cruz, CA 95062
Phone: 831-458-5610    

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.