Serhat Aytug, MD - Medicare Internal Medicine in Fullerton, CA

Serhat Aytug, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Fullerton, California. His current practice location is 100 E Valencia Mesa Dr, Suite 105, Fullerton, California. You can reach out to his office (for appointments etc.) via phone at (714) 446-5640.

Serhat Aytug is licensed to practice in California (license number C55444) 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 1194707471.

Contact Information

Serhat Aytug, MD
100 E Valencia Mesa Dr, Suite 105,
Fullerton, CA 92835-3813
(714) 446-5640
(714) 446-5625

Map and Direction




Physician's Profile

Full NameSerhat Aytug
GenderMale
SpecialityInternal Medicine - Endocrinology, Diabetes & Metabolism
Location100 E Valencia Mesa Dr, Fullerton, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1194707471
  • Provider Enumeration Date: 11/14/2005
  • Last Update Date: 10/19/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 7911926209
  • Enrollment ID: I20130103000087

Medical Identifiers

Medical identifiers for Serhat Aytug such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1194707471NPI-NPPES
02698891MedicaidNY

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 235870 (New York)Secondary
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism C55444 (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. Serhat Aytug allows following entities to bill medicare on his behalf.
Entity NameProvidence Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285890624
PECOS PAC ID: 8921993205
Enrollment ID: O20040216001346

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. Serhat Aytug 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
Serhat Aytug, MD
100 E Valencia Mesa Dr Ste 105,
Fullerton, CA 92835-3816

Ph: () -
Serhat Aytug, MD
100 E Valencia Mesa Dr, Suite 105,
Fullerton, CA 92835-3813

Ph: (714) 446-5640

Reviews and Comments


Internal Medicine Doctors in Fullerton, CA

Kiho Woo, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 101 E. Valencia Dr., Fullerton, CA 92835
Phone: 714-449-4800    Fax: 714-578-8629
Kumkum Sarkar Patel, M.D., MPH
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 1837 Sunny Crest Dr, Fullerton, CA 92835
Phone: 714-446-5831    
Pius J. Kim, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 101 E Valencia Mesa Dr, Fullerton, CA 92835
Phone: 714-447-5027    
Steven Woong Kim, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835
Phone: 714-446-5900    Fax: 714-446-5800
Yung Lyou, M.D., PH.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835
Phone: 714-446-5900    
Eugene Boston,
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 2720 N Harbor Blvd, Suite 100, Fullerton, CA 92835
Phone: 714-449-6990    
Saadah Alrajab, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 2501 E Chapman Ave Ste 225, Fullerton, CA 92831
Phone: 714-481-0172    Fax: 562-445-4140

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.