Nancy Chiao-castle, - Medicare Nurse Practitioner in San Mateo, CA

Nancy Chiao-castle, is a medicare enrolled "Nurse Practitioner" in San Mateo, California. She graduated from nursing school in 1999 and has 25 years of diverse experience with area of expertise as Nurse Practitioner. She is a member of the group practice County Of San Mateo and her current practice location is 222 W 39th Ave, San Mateo, California. You can reach out to her office (for appointments etc.) via phone at (650) 573-2222.

Nancy Chiao-castle is licensed to practice in California (license number RN245686) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1578619052.

Contact Information

Nancy Chiao-castle,
222 W 39th Ave,
San Mateo, CA 94403-4364
(650) 573-2222
Not Available

Map and Direction




Provider's Profile

Full NameNancy Chiao-castle
GenderFemale
SpecialityNurse Practitioner
Experience25 Years
Location222 W 39th Ave, San Mateo, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Nancy Chiao-castle graduated from nursing school in 1999
  NPI Data:
  • NPI Number: 1578619052
  • Provider Enumeration Date: 01/26/2007
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 3577552256
  • Enrollment ID: I20040507001254

Medical Identifiers

Medical identifiers for Nancy Chiao-castle such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1578619052NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363L00000XNurse Practitioner RN245686 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
San Mateo Medical CenterSan mateo, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
County Of San Mateo9032023171262

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. Nancy Chiao-castle allows following entities to bill medicare on her behalf.
Entity NameCounty Of San Mateo
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679642326
PECOS PAC ID: 9032023171
Enrollment ID: O20031126000292
Entity NameCounty Of San Mateo
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1831268580
PECOS PAC ID: 9032023171
Enrollment ID: O20040123000822

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. Nancy Chiao-castle 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
Nancy Chiao-castle,
25 W Avondale Rd,
Hillsborough, CA 94010-7180

Ph: (650) 573-2222
Nancy Chiao-castle,
222 W 39th Ave,
San Mateo, CA 94403-4364

Ph: (650) 573-2222

Reviews and Comments


Nurse Practitioner Nurses in San Mateo, CA

Ms. Yelice Corea,
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Phone: 650-458-0026    
Mrs. Marty Gail Rosier, RN, PHN, FNP-C
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Ms. Katherine R Elsley, NP
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Practice Location: 222 W 39th Ave, San Mateo, CA 94403
Phone: 650-573-3116    
Mary Teresa Ramirez, N.P.
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Medicare: Medicare Enrolled
Practice Location: 222 W 39th Ave, San Mateo, CA 94403
Phone: 650-573-2222    
Dr. Kristen Ashley Chou, DNP, FNP-BC
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Medicare: Medicare Enrolled
Practice Location: 951 Mariners Island Blvd Ste 300, San Mateo, CA 94404
Phone: 650-285-6927    Fax: 888-352-7383
Alyssa Marie Malacas Antonio, DNP, FNP-BC,RN,PCCN
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Medicare: Not Enrolled in Medicare
Practice Location: 1125 Park Pl Apt 408, San Mateo, CA 94403
Phone: 808-554-4096    
Jennifer Lorain Battaglia, CNP
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Medicare: Not Enrolled in Medicare
Practice Location: 951 Mariners Island Blvd Ste 300, San Mateo, CA 94404
Phone: 772-217-4557    

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.