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Edit this profileWhere to find Mark Willis, M.D.
- Highlands Ranch location main office
1500 Park Central Dr, Highlands Ranch, CO 80129 - Aurora location
12605 E 16th Ave, Aurora, CO 80045
About Dr. Willis
Based in Highlands Ranch, CO, Mark Willis, M.D. is listed in the NPI registry under otolaryngology. Mark graduated from University of Colorado School of Medicine, Denver in 2007. Mark is also listed as specializing in otolaryngology (ent). Medicare claims data shows Mark provided 692 services to 601 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1649423617 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
- (720) 848-0000
- Email not available
Practice Locations
1500 PARK CENTRAL DR
Highlands Ranch, CO 80129
12605 E 16th Ave
Aurora, CO 80045
Conditions Commonly Evaluated or Treated
Within Otolaryngology 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
Most searched conditions
- Ear infection
- Sinus infection
- Sleep apnea
- Tinnitus
- Tonsillitis
- Vertigo
Balance
Ear and hearing
- Cholesteatoma
- Eustachian tube dysfunction
- Hearing loss
- Otosclerosis
- Perforated eardrum
- Swimmer's ear
Head, neck, and salivary
- Hyperparathyroidism
- Neck mass
- Parotid gland tumor
- Salivary gland infection
- Thyroid cancer
Nose and sinus
- Broken nose
- Deviated septum
- Loss or reduction of smell
- Nasal obstruction
- Nasal polyps
- Nosebleeds
- Seasonal allergies
Sleep and airway
- Snoring
Throat and voice
- Enlarged adenoids
- Globus sensation
- Hoarseness and voice change
- Laryngopharyngeal reflux
- Swallowing difficulties
- Vocal cord nodules
- Vocal cord paralysis
Cancer
- Laryngeal cancer
- Oral cavity cancer
- Skin cancer of the head and neck
Head & Neck
Throat & Voice
- Frequent Strep Throat
Procedures & services
Most searched procedures
- Adenoidectomy
- Ear tube surgery
- Hearing test
- Sinus surgery
- Tonsillectomy
Office diagnosis
- Fine-needle aspiration of a neck mass
- Flexible laryngoscopy
- Nasal endoscopy
Cosmetic
- Earlobe Repair
Ear & Hearing
- Bone-Anchored Hearing Aid Surgery
- Eustachian Tube Balloon Dilation
Ear procedures
- Cochlear implant surgery
- Eardrum repair
- Earwax removal
- Mastoid surgery
- Stapes surgery
Head & Neck
- Neck Lump Removal
- Salivary Duct Stone Removal
- Thyroid Nodule Biopsy
Head and neck surgery
- Neck lymph-node dissection
- Parathyroid surgery
- Parotid gland surgery
- Thyroid removal surgery
- Voice-box removal
Nose & Sinus
- Broken Nose Repair
Nose and sinus procedures
- Nasal cautery for nosebleeds
- Nasal-polyp removal
- Rhinoplasty
- Septoplasty
- Turbinate reduction
Sleep and airway
- Drug-induced sleep endoscopy
- Hypoglossal nerve stimulator implantation
- Uvulopalatopharyngoplasty
Throat & Voice
Throat, voice, and swallowing
- Esophageal dilation
- Microlaryngoscopy
- Vocal-fold injection
Procedures Most Often Billed to Medicare
692 services · 601 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
78 | More often than most peers in Otolaryngology |
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
63 | As often as other peers in Otolaryngology |
| Removal of impacted ear wax | Procedure | 69210 |
60 | As often as other peers in Otolaryngology |
| Fine needle aspiration biopsy using ultrasound guidance, first growth | Procedure | 10005 |
21 | As often as other peers in Otolaryngology |
| Exam of ear using a microscope | Treatment | 92504 |
18 | Less often than most peers in Otolaryngology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
161 | As often as other peers in Otolaryngology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
129 | More often than most peers in Otolaryngology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
98 | As often as other peers in Otolaryngology |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
64 | As often as other peers in Otolaryngology |
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 ENT doctors at this location 1
Same specialty, same street address — most likely the same department or group.
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 ENT doctors in Highlands Ranch 3
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at University of Colorado School of Medicine, Denver 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at University of Colorado School of Medicine, Denver 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of voice box using a flexible endoscope 8
Providers in CO who bill this service to Medicare most often.
Common questions
What does Mark Willis specialize in?
Mark Willis is an ENT doctor in Highlands Ranch, CO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Otolaryngology”.
NPI registry
Where is Mark Willis located?
Mark Willis is listed at 1500 Park Central Dr, Highlands Ranch, CO 80129. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mark Willis's phone number?
The number on file is (720) 848-0000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Mark Willis?
Mark Willis's National Provider Identifier is 1649423617. 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 Mark Willis train?
Mark Willis attended University of Colorado School of Medicine, Denver, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mark Willis have?
Mark Willis has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What does Mark Willis do most often?
According to Medicare billing data, Mark Willis performs procedures including diagnostic exam of voice box using a flexible endoscope, diagnostic exam of nasal passages using an endoscope and removal of impacted ear wax; provides treatments such as exam of ear using a microscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Mark Willis's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mark Willis. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.