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Edit this profileAt a glance
- 10800 E Geddes Ave Ste 300, Englewood, CO 80112
About Dr. Dennis
Mark A. Dennis, M.D. is a healthcare provider in Englewood, CO specializing in diagnostic radiology. Medicare claims data shows Mark provided 2,924 services to 2,923 patients. The services billed most often include screening mammography, screening 3d breast mammography, and diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066). This provider record is associated with NPI 1649256561.
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
- (303) 761-9190
- Email not available
Practice Locations
10800 E GEDDES AVE STE 300
Englewood, CO 80112
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
2,924 services · 2,923 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Screening mammography | Imaging | 77067 |
1,188 | More often than most peers in Diagnostic Radiology |
| Screening 3d breast mammography | Imaging | 77063 |
1,187 | More often than most peers in Diagnostic Radiology |
| Limited ultrasound scan of 1 breast | Imaging | 76642 |
142 | More often than most peers in Diagnostic Radiology |
| Diagnostic mammography of 1 breast | Imaging | 77065 |
104 | More often than most peers in Diagnostic Radiology |
| Diagnostic mammography of both breasts | Imaging | 77066 |
93 | More often than most peers in Diagnostic Radiology |
| Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) | Billing code | G0279 |
194 | More often than most peers in Diagnostic Radiology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
16 | Less 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.
Other radiologists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 — 27 related providers in 4 groups
Other radiologists in Englewood 3
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1979 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Screening mammography 8
Providers in CO who bill this service to Medicare most often.
Common questions
What is Mark A. Dennis's specialty?
Mark A. Dennis is a radiologist in Englewood, CO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where can I find Mark A. Dennis?
Mark A. Dennis is listed at 10800 E Geddes Ave Ste 300, Englewood, CO 80112. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Mark A. Dennis?
The number on file is (303) 761-9190. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Mark A. Dennis?
Mark A. Dennis's National Provider Identifier is 1649256561. 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
What is Mark A. Dennis's education?
Mark A. Dennis attended Other, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mark A. Dennis have?
Mark A. Dennis has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What is Mark A. Dennis known for?
According to Medicare billing data, Mark A. Dennis performs imaging including screening mammography and screening 3d breast mammography, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Mark A. Dennis's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mark A. Dennis. If this is you, claiming it is free.
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