Dr Mariela M Costello, PSYD - Medicare Psychologist in Los Altos, CA

Dr Mariela M Costello, PSYD is a medicare enrolled "Psychologist - Clinical" provider in Los Altos, California. Her current practice location is 919 Fremont Ave, Suite 202, Los Altos, California. You can reach out to her office (for appointments etc.) via phone at (408) 220-3268.

Dr Mariela M Costello is licensed to practice in California (license number PSY23277) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1801145727.

Contact Information

Dr Mariela M Costello, PSYD
919 Fremont Ave, Suite 202,
Los Altos, CA 95020
(408) 220-3268
Not Available

Map and Direction




Healthcare Provider's Profile

Full NameDr Mariela M Costello
GenderFemale
SpecialityPsychologist - Clinical
Location919 Fremont Ave, Los Altos, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1801145727
  • Provider Enumeration Date: 09/06/2012
  • Last Update Date: 10/02/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 8628322559
  • Enrollment ID: I20181113001788

Medical Identifiers

Medical identifiers for Dr Mariela M Costello such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1801145727NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
103T00000XPsychologist PSY23277 (California)Secondary
103TC0700XPsychologist - Clinical PSY23277 (California)Primary

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. Dr Mariela M Costello allows following entities to bill medicare on her behalf.
Entity NameMemory Check Psychological Services, A Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1912184219
PECOS PAC ID: 7416856422
Enrollment ID: O20040107001021

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. Dr Mariela M Costello 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
Dr Mariela M Costello, PSYD
919 Fremont Ave, Suite 202,
Los Altos, CA 95020

Ph: (408) 220-3268
Dr Mariela M Costello, PSYD
919 Fremont Ave, Suite 202,
Los Altos, CA 95020

Ph: (408) 220-3268

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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