Robert Ryn Johnson, MD

Individual provider Therapeutic Radiology Physician · NPI 1598942781

Robert Ryn Johnson, MD practises Radiation Oncology in San Luis Obispo, California. Graduated from Cincinnati College of Medicine and Surgery in 2007, 19 years ago. Practices with Sutter Bay Medical Foundation, a 3,762-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying: 19
Trained at: Cincinnati College of Medicine and Surgery
Licensed in: CA
In the registry since: 2008

What do these letters mean?

MD — Doctor of Medicine: A physician who completed allopathic medical school.

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Practice location Address checks out

100 Casa St Ste C
San Luis Obispo, CA 93405-8804
Phone: (805) 541-1932
Fax: (805) 541-1653

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Therapeutic Radiology Physician (primary)	Taxonomy 2085R0203X · Licence A121032 (CA)

Record details

NPI number	1598942781
Entity type	Individual (Type 1)
Gender	Male
Credentials	MD
Sole proprietor	No
NPI enumerated	January 30, 2008
Last updated in NPPES	October 21, 2022
Certification date	October 21, 2022

Medicare enrollment

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

Medicare specialty	RADIATION ONCOLOGY
Medical school	CINCINNATI COLLEGE OF MEDICINE AND SURGERY
Graduated	2007 (19 years in practice)
Group practice	Sutter Bay Medical Foundation — 3762 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Telehealth	Offers telehealth services
Practice locations	4 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 patients	370
Services billed	5,648 a service is one billed item, such as a visit, a test or a procedure
Average patient age	76

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

French Hospital Medical Center Hospital · San Luis Obispo, CA
Marian Regional Medical Center Hospital · Santa Maria, CA

Colleagues at Sutter Bay Medical Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3762 clinicians in the practice; 12 are shown here.

Nadine Aldahhan, DO Emergency Medical Services (Emergency Medicine) Physician · Sausalito, CA
Esther Bae, DO Surgery Physician · Burlingame, CA
Aparna Batlapenumarthy, MD Internal Medicine Physician · Sunnyvale, CA
Shirley CHI, MD Neuromuscular Medicine (Physical Medicine & Rehabilitation) Physician · Berkeley, CA
Romina Davarpanah Family Medicine Physician · Los Altos, CA
Kirk Lin Student in an Organized Health Care Education/Training Program · Fremont, CA
Devin Murphy Lonergan, MD Otolaryngology Physician · Palo Alto, CA
Dr. Amin Manuchehry, MD Interventional Cardiology Physician · San Jose, CA
Mr. Casey Olsen, MPT, CSCS Physical Therapist · Santa Cruz, CA
Derrick Kyle Pelton, NP Family Nurse Practitioner · Santa Rosa, CA
Mara Spare, MD Internal Medicine Physician · Mountain View, CA
Ronak Jagdish Valand, MD Internal Medicine Physician · Oakland, CA