Shaina Marissa Willen, MD - Medicare Pediatrics in Reno, NV

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Shaina Marissa Willen, MD is a medicare enrolled "Pediatrics - Pediatric Pulmonology" physician in Reno, Nevada. Her current practice location is 1155 Mill St, Reno, Nevada. You can reach out to her office (for appointments etc.) via phone at (775) 982-5123.

Shaina Marissa Willen is licensed to practice in Nevada (license number 29058) 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 1730479627.

Contact Information

Shaina Marissa Willen, MD
1155 Mill St,
Reno, NV 89502-1576
(775) 982-5123
(775) 982-5470

Map and Direction




Physician's Profile

Full NameShaina Marissa Willen
GenderFemale
SpecialityPediatrics - Pediatric Pulmonology
Location1155 Mill St, Reno, Nevada
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1730479627
  • Provider Enumeration Date: 04/12/2011
  • Last Update Date: 04/28/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 2062637101
  • Enrollment ID: I20191120001411

Medical Identifiers

Medical identifiers for Shaina Marissa Willen such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1730479627NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2080P0214XPediatrics - Pediatric Pulmonology 29058 (Nevada)Primary
2080P0207XPediatrics - Pediatric Hematology-oncology A159074 (California)Secondary
208000000XPediatrics A159074 (California)Secondary

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. Shaina Marissa Willen allows following entities to bill medicare on her behalf.
Entity NameRegents Of The Univ Of Ca
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013906973
PECOS PAC ID: 3375456619
Enrollment ID: O20031111000892
Entity NameTahoe Carson Valley Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508865528
PECOS PAC ID: 8426048158
Enrollment ID: O20040514000834

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. Shaina Marissa Willen 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
Shaina Marissa Willen, MD
1155 Mill St # Msm14,
Reno, NV 89502-1576

Ph: (775) 982-5262		Shaina Marissa Willen, MD
1155 Mill St,
Reno, NV 89502-1576

Ph: (775) 982-5123

Reviews and Comments


Pediatrics Doctors in Reno, NV

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Dr. Sonia Budhecha, M.D.
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Lindsay Koppinger, M.D.
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Dr. Emily A Lozano, MD
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Phone: 775-982-5437    
Max Coppes, MD
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Practice Location: 75 Pringle Way, Ste 505, Reno, NV 89502
Phone: 775-982-5000    Fax: 775-982-3900
Lauren Lee Sandefur, M.D.
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Medicare: Medicare Enrolled
Practice Location: 901 E 2nd St Ste 201, Reno, NV 89502
Phone: 775-982-5000    Fax: 775-982-3971

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.