Dagmara Olsen, MD - Medicare Internal Medicine in Pico Rivera, CA

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Dagmara Olsen, MD is a medicare enrolled "Internal Medicine" physician in Pico Rivera, California. Her current practice location is 8337 Telegraph Rd Ste 102, Pico Rivera, California. You can reach out to her office (for appointments etc.) via phone at (562) 445-3181.

Dagmara Olsen is licensed to practice in California (license number 193842) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1356912059.

Contact Information

Dagmara Olsen, MD
8337 Telegraph Rd Ste 102,
Pico Rivera, CA 90660-4933
(562) 445-3181
Not Available

Map and Direction




Physician's Profile

Full NameDagmara Olsen
GenderFemale
SpecialityInternal Medicine
Location8337 Telegraph Rd Ste 102, Pico Rivera, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1356912059
  • Provider Enumeration Date: 07/05/2021
  • Last Update Date: 07/15/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 6800317983
  • Enrollment ID: I20250305001875

Medical Identifiers

Medical identifiers for Dagmara Olsen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1356912059NPI-NPPES
T-4368OtherMSMEDICAL LICENSE
T-4368OtherMSMEDICAL BOARD OF MS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine T-4368 (Mississippi)Secondary
207R00000XInternal Medicine 193842 (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. Dagmara Olsen allows following entities to bill medicare on her behalf.
Entity NameThe Roads Foundation, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508278359
PECOS PAC ID: 2961722558
Enrollment ID: O20150521002128

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. Dagmara Olsen 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
Dagmara Olsen, MD
8337 Telegraph Rd Ste 102,
Pico Rivera, CA 90660-4933

Ph: () -		Dagmara Olsen, MD
8337 Telegraph Rd Ste 102,
Pico Rivera, CA 90660-4933

Ph: (562) 445-3181

Reviews and Comments


Internal Medicine Doctors in Pico Rivera, CA

David D. Ding, MD
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Practice Location: 9330 Washington Blvd, Pico Rivera, CA 90660
Phone: 562-205-4200    Fax: 562-205-3340
Dr. Khalid Nur, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 4511 Rosemead Blvd, Pico Rivera, CA 90660
Phone: 562-692-3388    
Anh Le, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9436 Slauson Ave, Pico Rivera, CA 90660
Phone: 562-949-6069    
Dr. Gemma Tok Hyon Ko, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 4511 Rosemead Blvd, Pico Rivera, CA 90660
Phone: 562-692-3388    
Minou P. Tran, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9315 Telegraph Rd, Pico Rivera, CA 90660
Phone: 562-923-5800    Fax: 562-923-5810
Dr. Lam Dang Nguyen, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 9330 Washington Blvd, Pico Rivera, CA 90660
Phone: 562-205-4200    

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.