Dr Michael S Greenfield, MD - Medicare Endocrinology in Mountain View, CA

Dr Michael S Greenfield, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Mountain View, California. He went to Harvard Medical School and graduated in 1974 and has 50 years of diverse experience with area of expertise as Endocrinology. His current practice location is 2500 Hospital Dr, Building 14, Mountain View, California. You can reach out to his office (for appointments etc.) via phone at (650) 965-7500.

Dr Michael S Greenfield is licensed to practice in California (license number G35253) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1295873685.

Contact Information

Dr Michael S Greenfield, MD
2500 Hospital Dr, Building 14,
Mountain View, CA 94040-4106
(650) 965-7500
Not Available

Map and Direction




Physician's Profile

Full NameDr Michael S Greenfield
GenderMale
SpecialityEndocrinology
Experience50 Years
Location2500 Hospital Dr, Mountain View, California
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Michael S Greenfield attended and graduated from Harvard Medical School in 1974
  NPI Data:
  • NPI Number: 1295873685
  • Provider Enumeration Date: 02/01/2007
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 8729141916
  • Enrollment ID: I20090114000534

Medical Identifiers

Medical identifiers for Dr Michael S Greenfield such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1295873685NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism G35253 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
El Camino HospitalMountain view, CAHospital
Hazel Hawkins Memorial HospitalHollister, CAHospital

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 Michael S Greenfield 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 Michael S Greenfield, MD
2500 Hospital Dr, Building 14,
Mountain View, CA 94040-4106

Ph: (650) 965-7500
Dr Michael S Greenfield, MD
2500 Hospital Dr, Building 14,
Mountain View, CA 94040-4106

Ph: (650) 965-7500

Reviews and Comments


Internal Medicine Doctors in Mountain View, CA

Dr. Gayathri Thiru, M.D
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 2490 Hospital Drive, Suite 212, Mountain View, CA 94040
Phone: 408-900-8077    Fax: 844-965-9436
Dr. Shawn Mathew Jacob, MD
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 2500 Grant Rd, Mountain View, CA 94040
Phone: 650-940-7000    
Dr. Vibha Ramaswamy Iyengar, M.D, MPH
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 701 E El Camino Real, Mountain View, CA 94040
Phone: 650-934-7808    
Geoffrey Yoon, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 701 E El Camino Real, Mountain View, CA 94040
Phone: 650-404-8300    
Dr. David Alan Reinert, D.O.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 701 E El Camino Real, Mountain View, CA 94040
Phone: 650-934-7000    
Apurva Marfatia, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 701 E El Camino Real, Medical Staff, Mountain View, CA 94040
Phone: 650-934-7144    
Troy Thoai Lam, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 2500 Grant Rd, Mountain View, CA 94040
Phone: 650-374-0001    Fax: 650-364-3351

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.