Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Nathan Thomas Mortensen, DO

Individual provider Diagnostic Radiology Physician · NPI 1679825400

Nathan Thomas Mortensen, DO practises Diagnostic Radiology in San Francisco, California. Qualified in 2012, 14 years ago. Practices with Evergreen Radia LLC, a 116-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Oregon.

Years since qualifying
14
Licensed in
CA, OR
In the registry since
2012
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

505 Parnassus Ave Fl 3
San Francisco, CA 94143-2204
Phone: (415) 476-1537
Fax: (415) 476-0616
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 842 E Main St, Medford, OR 97504 — (541) 618-5825

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 24382 (CA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence A87377 (CA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence DO187083 (OR)

Record details

NPI number1679825400
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 3, 2012
Last updated in NPPESOctober 6, 2025
Certification dateOctober 6, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Evergreen Radia Llc — 116 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations23 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients2,435
Services billed 23,712 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $125 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Evergreen Radia LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 116 clinicians in the practice; 12 are shown here.

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