Are you Ralph M. Koenker, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileWhere to find Ralph M. Koenker, M.D.
- Greenbrae location main office
250 Bon Air Rd, Greenbrae, CA 94904 - Novato location
180 Rowland Way, Novato, CA 94945
About Dr. Koenker
Based in Greenbrae, CA, Ralph M. Koenker, M.D. is listed in the NPI registry under diagnostic radiology. Ralph graduated from University of California, San Diego School of Medicine in 1985. Ralph is also listed as specializing in nuclear medicine and vascular & interventional radiology. Medicare claims data shows Ralph provided 4,498 services to 4,190 patients. The services billed most often include x-ray of chest, 1 view, ct scan head or brain without contrast, and ct scan of abdomen and pelvis with contrast. NPI 1891734265 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (415) 925-7000
- Email not available
Practice Locations
250 BON AIR RD
Greenbrae, CA 94904
180 Rowland Way
Novato, CA 94945
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Abdominal imaging
Biopsies
Bone Density
Breast Imaging
CT Scan
Digestive & liver
Fluoroscopy
General imaging
Heart & blood vessels
Joint & bone
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
Spine & back
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
Procedures Most Often Billed to Medicare
4,498 services · 4,190 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
1,092 | More often than most peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
480 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
268 | More often than most peers in Diagnostic Radiology |
| Screening mammography | Imaging | 77067 |
243 | As often as other peers in Diagnostic Radiology |
| Screening 3d breast mammography | Imaging | 77063 |
243 | As often as other peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
208 | More often than most peers in Diagnostic Radiology |
| X-ray of hip, 2-3 views | Imaging | 73502 |
162 | More than most peers in Diagnostic Radiology |
| X-ray of shoulder, minimum of 2 views | Imaging | 73030 |
150 | More often than most peers in Diagnostic Radiology |
| Ct scan of upper spine without contrast | Imaging | 72125 |
150 | More often than most peers in Diagnostic Radiology |
| Ct scan of chest without contrast | Imaging | 71250 |
135 | More often than most peers in Diagnostic Radiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiologists in Greenbrae 8
Same specialty, same city.
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1985 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Ralph M. Koenker specialize in?
Ralph M. Koenker is a radiologist in Greenbrae, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Ralph M. Koenker located?
Ralph M. Koenker is listed at 250 Bon Air Rd, Greenbrae, CA 94904. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Ralph M. Koenker's phone number?
The number on file is (415) 925-7000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Ralph M. Koenker?
Ralph M. Koenker's National Provider Identifier is 1891734265. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Ralph M. Koenker train?
Ralph M. Koenker attended University of California, San Diego School of Medicine, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Ralph M. Koenker have?
Ralph M. Koenker has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Ralph M. Koenker do most often?
According to Medicare billing data, Ralph M. Koenker performs imaging including x-ray of chest, 1 view and ct scan head or brain without contrast; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Ralph M. Koenker's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Ralph M. Koenker. If this is you, claiming it is free.
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