Peter A Castillo, MD - Medicare Obstetrics/gynecology in Los Gatos, CA

Peter A Castillo, MD is a medicare enrolled "Obstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery" physician in Los Gatos, California. He graduated from medical school in 2000 and has 24 years of diverse experience with area of expertise as Obstetrics/gynecology. His current practice location is 15215 National Ave Ste 104, Los Gatos, California. You can reach out to his office (for appointments etc.) via phone at (925) 905-9922.

Peter A Castillo is licensed to practice in California (license number A109681) 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 1164521035.

Contact Information

Peter A Castillo, MD
15215 National Ave Ste 104,
Los Gatos, CA 95032-2425
(925) 905-9922
(925) 905-9925

Map and Direction




Physician's Profile

Full NamePeter A Castillo
GenderMale
SpecialityObstetrics/gynecology
Experience24 Years
Location15215 National Ave Ste 104, Los Gatos, 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:
  • Peter A Castillo graduated from medical school in 2000
  NPI Data:
  • NPI Number: 1164521035
  • Provider Enumeration Date: 09/21/2006
  • Last Update Date: 07/21/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6709980519
  • Enrollment ID: I20091230000667

Medical Identifiers

Medical identifiers for Peter A Castillo such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1164521035NPI-NPPES
CP113XOtherCAPTAN

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology ME96973 (Florida)Secondary
207VF0040XObstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery A109681 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Contra Costa Regional Medical CenterMartinez, CAHospital

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. Peter A Castillo allows following entities to bill medicare on his behalf.
Entity NamePeter A. Castillo, Md, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356766869
PECOS PAC ID: 6901028406
Enrollment ID: O20141118002167

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. Peter A 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
Peter A Castillo, MD
15215 National Ave Ste 104,
Los Gatos, CA 95032-2425

Ph: (925) 905-9922
Peter A Castillo, MD
15215 National Ave Ste 104,
Los Gatos, CA 95032-2425

Ph: (925) 905-9922

Reviews and Comments


Obstetrics & Gynecology Doctors in Los Gatos, CA

Natasha Kapur, MD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 15151 National Ave Ste 1, Los Gatos, CA 95032
Phone: 408-356-0431    
Dr. Andrew Cook, M.D., FACOG
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 14830 Los Gatos Blvd, Suite 300, Los Gatos, CA 95032
Phone: 408-358-2511    Fax: 408-358-1009
Linda Honey Joshua, NP,RN
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 15047 Los Gatos Blvd, 200, Los Gatos, CA 95032
Phone: 408-364-6799    
Dr. Mark Alan Fierro, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 15251 National Ave, Suite 106, Los Gatos, CA 95032
Phone: 408-356-5111    Fax: 408-356-0654
Dr. Rosanne Mayhew, M.D.
Obstetrics & Gynecology
Medicare: May Accept Medicare Assignments
Practice Location: 800 Pollard Rd Ste B203, Los Gatos, CA 95032
Phone: 408-871-1885    Fax: 408-871-8405
Dr. Karen E Kunzel, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 15151 National Ave, Los Gatos, CA 95032
Phone: 408-356-0431    

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.