Nicholas S Muff, MD - Medicare Specialist in Corona, CA

Nicholas S Muff, MD is a medicare enrolled "Specialist" physician in Corona, California. His current practice location is 260 E Ontario Ave Ste 101, Corona, California. You can reach out to his office (for appointments etc.) via phone at (949) 490-4820.

Nicholas S Muff is licensed to practice in Washington (license number MD00015015) 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 1740372861.

Contact Information

Nicholas S Muff, MD
260 E Ontario Ave Ste 101,
Corona, CA 92879-3508
(949) 490-4820
(949) 490-4819

Map and Direction




Physician's Profile

Full NameNicholas S Muff
GenderMale
SpecialitySpecialist
Location260 E Ontario Ave Ste 101, Corona, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1740372861
  • Provider Enumeration Date: 09/28/2006
  • Last Update Date: 06/13/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 0244281533
  • Enrollment ID: I20050203000558

Medical Identifiers

Medical identifiers for Nicholas S Muff such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1740372861NPI-NPPES
05660OtherWAREGENCE BS
13895001OtherWAGROUP HEALTH
1160381MedicaidWA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology G25544 (California)Secondary
174400000XSpecialist MD00015015 (Washington)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. Nicholas S Muff allows following entities to bill medicare on his behalf.
Entity NameDermahealth Dermatology Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881835171
PECOS PAC ID: 8729145677
Enrollment ID: O20090320000583
Entity NameStephen William Doggett Md Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1427281666
PECOS PAC ID: 9830235217
Enrollment ID: O20140327000461

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. Nicholas S Muff 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
Nicholas S Muff, MD
P O Box 977,
Coupeville, WA 98239

Ph: (360) 678-4071
Nicholas S Muff, MD
260 E Ontario Ave Ste 101,
Corona, CA 92879-3508

Ph: (949) 490-4820

Reviews and Comments



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.