Dr Nicolas Demetrios Prionas, MD, PHD - Medicare Radiation Oncology in San Francisco, CA

Dr Nicolas Demetrios Prionas, MD, PHD is a medicare enrolled "Radiology - Radiation Oncology" physician in San Francisco, California. He went to University Of California, Davis School Of Medicine and graduated in 2014 and has 10 years of diverse experience with area of expertise as Radiation Oncology. He is a member of the group practice University Of California San Francisco and his current practice location is 400 Parnassus Ave, San Francisco, California. You can reach out to his office (for appointments etc.) via phone at (415) 353-2497.

Dr Nicolas Demetrios Prionas is licensed to practice in California (license number A138608) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1972840361.

Contact Information

Dr Nicolas Demetrios Prionas, MD, PHD
400 Parnassus Ave,
San Francisco, CA 94143-2202
(415) 353-2497
Not Available

Map and Direction




Physician's Profile

Full NameDr Nicolas Demetrios Prionas
GenderMale
SpecialityRadiation Oncology
Experience10 Years
Location400 Parnassus Ave, San Francisco, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Nicolas Demetrios Prionas attended and graduated from University Of California, Davis School Of Medicine in 2014
  NPI Data:
  • NPI Number: 1972840361
  • Provider Enumeration Date: 01/07/2013
  • Last Update Date: 09/24/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 8921339375
  • Enrollment ID: I20191016000273

Medical Identifiers

Medical identifiers for Dr Nicolas Demetrios Prionas such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1972840361NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0001XRadiology - Radiation Oncology A138608 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ucsf Medical CenterSan francisco, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Of California San Francisco44865672291306

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 Nicolas Demetrios Prionas allows following entities to bill medicare on his behalf.
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. Dr Nicolas Demetrios Prionas 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 Nicolas Demetrios Prionas, MD, PHD
1600 Divisadero St Bsmt Level,
San Francisco, CA 94143-3010

Ph: (415) 353-9807
Dr Nicolas Demetrios Prionas, MD, PHD
400 Parnassus Ave,
San Francisco, CA 94143-2202

Ph: (415) 353-2497

Reviews and Comments


Radiology Doctors in San Francisco, CA

Roxanna Juarez,
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Dr. Roy A. Filly, M.D.
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Dr. Adam Keenan Meeks, M.D.
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Phone: 415-514-5681    
Dr. Edward L Baker, M.D.
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Phone: 415-600-3232    Fax: 415-447-6335
Dr. Jared Andrew Narvid, M.D.
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Phone: 415-236-5281    

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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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