Robert C Day, MD - Medicare Obstetrics/gynecology in Santa Clara, CA

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Robert C Day, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Santa Clara, California. He went to University Of Massachusetts Medical School and graduated in 2014 and has 10 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice Magella Medical Group Inc and his current practice location is 700 Lawrence Expy, Santa Clara, California. You can reach out to his office (for appointments etc.) via phone at (408) 851-1000.

Robert C Day is licensed to practice in California (license number A139689) 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 1841618634.

Contact Information

Robert C Day, MD
700 Lawrence Expy,
Santa Clara, CA 95051-5173
(408) 851-1000
Not Available

Map and Direction




Physician's Profile

Full NameRobert C Day
GenderMale
SpecialityObstetrics/gynecology
Experience10 Years
Location700 Lawrence Expy, Santa Clara, 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:
  • Robert C Day attended and graduated from University Of Massachusetts Medical School in 2014
  NPI Data:
  • NPI Number: 1841618634
  • Provider Enumeration Date: 03/31/2014
  • Last Update Date: 04/04/2018
  Medicare PECOS Information:
  • PECOS PAC ID: 6204129315
  • Enrollment ID: I20180425001142

Medical Identifiers

Medical identifiers for Robert C Day such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1841618634NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology A139689 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Magella Medical Group Inc721482759118

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. Robert C Day allows following entities to bill medicare on his behalf.
Entity NamePermanente Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073606299
PECOS PAC ID: 8921910225
Enrollment ID: O20031104000710
Entity NameUniversity Of California Irvine
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598790529
PECOS PAC ID: 5395658181
Enrollment ID: O20031107000431
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356304034
PECOS PAC ID: 0143128009
Enrollment ID: O20031230000251
Entity NameMagella Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376640086
PECOS PAC ID: 7214827591
Enrollment ID: O20040318001666

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. Robert C Day 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
Robert C Day, MD
395 Central St,
Milford, MA 01757-3401

Ph: () -		Robert C Day, MD
700 Lawrence Expy,
Santa Clara, CA 95051-5173

Ph: (408) 851-1000

Reviews and Comments


Obstetrics & Gynecology Doctors in Santa Clara, CA

Andrea B. Hutchinson, MD
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 710 Lawrence Expy, Santa Clara, CA 95051
Phone: 408-851-1000    
Shekar Davarya, M.D.
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 710 Lawrence Expy, Department 390, Santa Clara, CA 95051
Phone: 408-851-3067    Fax: 408-851-3431
Marie Kristine Holzapfel, M.D.
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 710 Lawrence Expy, Dept 390, Santa Clara, CA 95051
Phone: 408-554-9820    
Jennifer A. Cato, MD
Obstetrics & Gynecology
Medicare: Medicare Enrolled
Practice Location: 710 Lawrence Expy, Santa Clara, CA 95051
Phone: 408-851-1000    
Uyen P Huynh, M.D.
Obstetrics & Gynecology
Medicare: Not Enrolled in Medicare
Practice Location: 710 Lawrence Expy, Women's Clinic, Santa Clara, CA 95051
Phone: 408-851-5000    
Ricci Regina Rivera Sylla, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 710 Lawrence Expy # 386, Santa Clara, CA 95051
Phone: 408-554-9820    
Rajita G. Patil, MD
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 710 Lawrence Expy, Santa Clara, CA 95051
Phone: 408-851-1000    

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.