Dr Izabela Witczak, MD - Medicare Internal Medicine in San Marcos, CA

Dr Izabela Witczak, MD is a medicare enrolled "Internal Medicine" physician in San Marcos, California. She graduated from medical school in 1987 and has 37 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice North County Health Project, Inc. and her current practice location is 150 Valpreda Rd, San Marcos, California. You can reach out to her office (for appointments etc.) via phone at (760) 736-6700.

Dr Izabela Witczak is licensed to practice in California (license number A71311) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1184735201.

Contact Information

Dr Izabela Witczak, MD
150 Valpreda Rd,
San Marcos, CA 92069-2973
(760) 736-6700
(760) 736-8740

Map and Direction




Physician's Profile

Full NameDr Izabela Witczak
GenderFemale
SpecialityInternal Medicine
Experience37 Years
Location150 Valpreda Rd, San Marcos, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Izabela Witczak graduated from medical school in 1987
  NPI Data:
  • NPI Number: 1184735201
  • Provider Enumeration Date: 08/31/2006
  • Last Update Date: 11/04/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 6204891500
  • Enrollment ID: I20041129000602

Medical Identifiers

Medical identifiers for Dr Izabela Witczak such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184735201NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A71311 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North County Health Project, Inc.276939093972

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 Izabela Witczak allows following entities to bill medicare on her behalf.
Entity NameNorth County Health Project, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073529681
PECOS PAC ID: 2769390939
Enrollment ID: O20040122001126

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 Izabela Witczak 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 Izabela Witczak, MD
12395 El Camino Real, Suite 100,
San Diego, CA 92130-3082

Ph: (858) 259-5655
Dr Izabela Witczak, MD
150 Valpreda Rd,
San Marcos, CA 92069-2973

Ph: (760) 736-6700

Reviews and Comments


Internal Medicine Doctors in San Marcos, CA

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Dr. Juan Carlos Alvergue, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 400 Craven Rd, San Marcos, CA 92078
Phone: 310-696-9971    

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.