Physician Profile
Karen B. Alderfer, MD
Unclaimed ProfileAbout Dr. Alderfer
Karen B. Alderfer, MD practices diagnostic radiology in Fort Collins, CO. Karen is a 2010 graduate of University of Nevada School of Medicine. According to Medicare claims data, Karen cared for 1,419 Medicare patients across 3,284 services. The services billed most often include low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, ct scan of abdomen and pelvis with contrast, and ct scan of chest with contrast. The provider's National Provider Identifier (NPI) is 1043534654.
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
- (970) 484-4757
- Email not available
Practice Locations
1024 S LEMAY AVE
Fort Collins, CO 80524
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
3,284 services · 1,419 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
302 | More often than most peers in Diagnostic Radiology |
| Ct scan of chest with contrast | Imaging | 71260 |
202 | More than most peers in Diagnostic Radiology |
| Ct scan of chest without contrast | Imaging | 71250 |
165 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 1 view | Imaging | 71045 |
104 | Less often than most peers in Diagnostic Radiology |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
87 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
80 | As often as other peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
62 | Less often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
49 | As often as other peers in Diagnostic Radiology |
| Ct scan of blood vessels of abdomen and pelvis with contrast | Imaging | 74174 |
48 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis before and after contrast | Imaging | 74178 |
33 | As often as other 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.
Other radiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 26 related providers in 4 groups
Other radiologists in Fort Collins 2
Same specialty, same city.
Trained at University of Nevada School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2010 at University of Nevada School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ct scan of abdomen and pelvis with contrast 8
Providers in CO who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Alderfer?
Dr. Alderfer is a radiologist in Fort Collins, CO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
What is Dr. Alderfer's address?
Dr. Alderfer is listed at 1024 S Lemay Ave, Fort Collins, CO 80524. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Alderfer?
The number on file is (970) 484-4757. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Alderfer's NPI number?
Dr. Alderfer's National Provider Identifier is 1043534654. 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 Dr. Alderfer train?
Dr. Alderfer attended University of Nevada School of Medicine, graduating in 2010. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Alderfer been practicing?
Dr. Alderfer has 16 years experience. Calculated from a graduation year of 2010, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Alderfer perform?
According to Medicare billing data, Dr. Alderfer performs imaging including ct scan of abdomen and pelvis with contrast and ct scan of chest with 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
Has Dr. Alderfer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Alderfer. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.