Ms Mariela Sofia Shaiken, NP - Medicare Internal Medicine in San Francisco, CA

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Ms Mariela Sofia Shaiken, NP is a medicare enrolled "Internal Medicine - Medical Oncology" physician in San Francisco, California. Her current practice location is 505 Parnassus Ave Fl 12, San Francisco, California. You can reach out to her office (for appointments etc.) via phone at (415) 353-1383.

Ms Mariela Sofia Shaiken is licensed to practice in California (license number 738643) 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 1508231135.

Contact Information

Ms Mariela Sofia Shaiken, NP
505 Parnassus Ave Fl 12,
San Francisco, CA 94143-2204
(415) 353-1383
Not Available

Map and Direction




Physician's Profile

Full NameMs Mariela Sofia Shaiken
GenderFemale
SpecialityInternal Medicine - Medical Oncology
Location505 Parnassus Ave Fl 12, San Francisco, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1508231135
  • Provider Enumeration Date: 12/08/2015
  • Last Update Date: 09/26/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 0042570889
  • Enrollment ID: I20180215002970

Medical Identifiers

Medical identifiers for Ms Mariela Sofia Shaiken such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1508231135NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology 95003334 (California)Secondary
207RX0202XInternal Medicine - Medical Oncology 738643 (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. Ms Mariela Sofia Shaiken allows following entities to bill medicare on her behalf.
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881763597
PECOS PAC ID: 4284547274
Enrollment ID: O20031106000389
Entity NameUniversity Of California San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861578973
PECOS PAC ID: 4486567229
Enrollment ID: O20031212000897
Entity NameUcsf Medical Group Business Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477624104
PECOS PAC ID: 3779497870
Enrollment ID: O20040622001513

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. Ms Mariela Sofia Shaiken 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
Ms Mariela Sofia Shaiken, NP
3333 California St # S1-10,
San Francisco, CA 94118-1981

Ph: (415) 353-1383		Ms Mariela Sofia Shaiken, NP
505 Parnassus Ave Fl 12,
San Francisco, CA 94143-2204

Ph: (415) 353-1383

Reviews and Comments


Internal Medicine Doctors in San Francisco, CA

Dr. Shannon Walker,
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Phone: 415-206-5164    Fax: 415-206-5586
Stephen Norris Cohen, MD
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Phone: 415-681-2171    Fax: 415-681-2171
Mauricio Jalife Bucay, M.D
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Phone: 415-750-4994    Fax: 415-750-8156
Dr. Adriana A.t. Martin, M.D., PH.D.
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Practice Location: 505 Parnassus Ave, San Francisco, CA 94143
Phone: 415-514-7288    

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.

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