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Edit this profileAt a glance
- 4745 Arapahoe Ave, Ste 130, Boulder, CO 80303
About Dr. Warren
James D. Warren, M.D. is a healthcare provider in Boulder, CO specializing in otolaryngology. James trained at University of Missouri, Columbia School of Medicine, graduating in 1984. James is also listed as specializing in otolaryngology (ent). According to Medicare claims data, James cared for 634 Medicare patients across 769 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 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 low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1194743450.
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) 443-2771
- Email not available
Practice Locations
4745 ARAPAHOE AVE STE 130
Boulder, CO 80303
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
Balance
Ear and hearing
- Cholesteatoma
- Eustachian tube dysfunction
- Hearing loss
- Otosclerosis
- Perforated eardrum
- Swimmer's ear
Head, neck, and salivary
Nose and sinus
- Broken nose
- Deviated septum
- Loss or reduction of smell
- Nasal obstruction
- Nasal polyps
- Nosebleeds
- Seasonal allergies
Sleep and airway
Throat and voice
- Enlarged adenoids
- Globus sensation
- Hoarseness and voice change
- Laryngopharyngeal reflux
- Swallowing difficulties
- Vocal cord nodules
- Vocal cord paralysis
Cancer
Head & Neck
Throat & Voice
Procedures & services
Most searched procedures
Office diagnosis
Cosmetic
Ear & Hearing
Ear procedures
Head & Neck
Head and neck surgery
- Neck lymph-node dissection
- Parathyroid surgery
- Parotid gland surgery
- Thyroid removal surgery
- Voice-box removal
Nose & Sinus
Nose and sinus procedures
Sleep and airway
Throat & Voice
Throat, voice, and swallowing
Procedures Most Often Billed to Medicare
769 services · 634 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
83 | More often than most peers in Otolaryngology |
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
71 | More often than most peers in Otolaryngology |
| Removal of impacted ear wax | Procedure | 69210 |
36 | Less often than most peers in Otolaryngology |
| Comprehensive hearing and speech recognition test | Treatment | 92557 |
86 | More often than most peers in Otolaryngology |
| Test to assess middle ear function | Treatment | 92567 |
59 | As often as other peers in Otolaryngology |
| Exam of ear using a microscope | Treatment | 92504 |
17 | Less 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 |
209 | More often than most 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 |
105 | More 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 |
88 | 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 |
15 | Less often than most 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 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
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 ENT doctors in Boulder 3
Same specialty, same city.
Trained at University of Missouri, Columbia School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1984 at University of Missouri, Columbia School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of nasal passages using an endoscope 8
Providers in CO who bill this service to Medicare most often.
Common questions
What kind of doctor is James D. Warren?
James D. Warren is an ENT doctor in Boulder, CO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Otolaryngology”.
NPI registry
What is James D. Warren's address?
James D. Warren is listed at 4745 Arapahoe Ave Ste 130, Boulder, CO 80303. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with James D. Warren?
The number on file is (303) 443-2771. Contact the office directly to confirm availability and scheduling.
NPI registry
What is James D. Warren's NPI number?
James D. Warren's National Provider Identifier is 1194743450. 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 James D. Warren train?
James D. Warren attended University of Missouri, Columbia School of Medicine, graduating in 1984. This comes from the CMS National Downloadable File.
CMS public data
How long has James D. Warren been practicing?
James D. Warren has 42 years experience. Calculated from a graduation year of 1984, reported in the CMS National Downloadable File.
CMS public data
What procedures does James D. Warren perform?
According to Medicare billing data, James D. Warren performs procedures including diagnostic exam of nasal passages using an endoscope, diagnostic exam of voice box using a flexible endoscope and removal of impacted ear wax; provides treatments such as comprehensive hearing and speech recognition test and test to assess middle ear function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has James D. Warren confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by James D. Warren. If this is you, claiming it is free.
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