Dr Mark Alan Fierro, MD - Medicare Obstetrics & Gynecology in Los Gatos, CA

Dr Mark Alan Fierro, MD is a medicare enrolled "Obstetrics & Gynecology" physician in Los Gatos, California. His current practice location is 15251 National Ave, Suite 106, Los Gatos, California. You can reach out to his office (for appointments etc.) via phone at (408) 356-5111.

Dr Mark Alan Fierro is licensed to practice in California (license number A124997) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1114155496.

Contact Information

Dr Mark Alan Fierro, MD
15251 National Ave, Suite 106,
Los Gatos, CA 95032-2400
(408) 356-5111
(408) 356-0654

Map and Direction




Physician's Profile

Full NameDr Mark Alan Fierro
GenderMale
SpecialityObstetrics & Gynecology
Location15251 National Ave, Los Gatos, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1114155496
  • Provider Enumeration Date: 06/25/2009
  • Last Update Date: 08/11/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 5496115511
  • Enrollment ID: I20230720000923

Medical Identifiers

Medical identifiers for Dr Mark Alan Fierro such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1114155496NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207V00000XObstetrics & Gynecology 2009015668 (Missouri)Secondary
207V00000XObstetrics & Gynecology A124997 (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 Mark Alan Fierro allows following entities to bill medicare on his behalf.
Entity NameObstetrix Medical Group Of California A Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629175336
PECOS PAC ID: 0244120939
Enrollment ID: O20040317000435

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 Mark Alan Fierro 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 Mark Alan Fierro, MD
15251 National Ave, Suite 106,
Los Gatos, CA 95032-2400

Ph: (408) 356-5111
Dr Mark Alan Fierro, MD
15251 National Ave, Suite 106,
Los Gatos, CA 95032-2400

Ph: (408) 356-5111

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. 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
Peter A. Castillo, M.D.
Obstetrics & Gynecology
Medicare: Accepting Medicare Assignments
Practice Location: 15215 National Ave Ste 104, Los Gatos, CA 95032
Phone: 925-905-9922    Fax: 925-905-9925
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.