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Edit this profileAt a glance
- 8380 Warren Pkwy Ste 504, Frisco, TX 75034
About Dr. Littlejohn
Mark C. Littlejohn, MD is a healthcare provider in Frisco, TX specializing in otolaryngology (ent). Mark trained at University of Texas Medical Branch at Galveston, graduating in 1988. According to Medicare claims data, Mark cared for 830 Medicare patients across 863 services. The services billed most often include new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more, and diagnostic exam of voice box using a flexible endoscope. This provider record is associated with NPI 1932176252.
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
- (972) 596-4005
- Email not available
Practice Locations
8380 WARREN PKWY STE 504
Frisco, TX 75034
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
863 services · 830 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
105 | More often than most peers in Otolaryngology (ENT) |
| Removal of impacted ear wax | Procedure | 69210 |
70 | As often as other peers in Otolaryngology (ENT) |
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
29 | Less often than most peers in Otolaryngology (ENT) |
| Biopsy or removal of nasal polyp or tissue using an endoscope | Procedure | 31237 |
18 | Less often than most peers in Otolaryngology (ENT) |
| Incision of eardrum with insertion of eardrum tube under local or topical anesthesia | Procedure | 69433 |
12 | Less often than most peers in Otolaryngology (ENT) |
| Repositioning exercises of head for treatment of dizziness, each day | Treatment | 95992 |
25 | More often than most peers in Otolaryngology (ENT) |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
208 | More than most peers in Otolaryngology (ENT) |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
190 | More than most peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
89 | As often as other peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
61 | As often as other peers in Otolaryngology (ENT) |
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 otolaryngology specialists at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 — 29 related providers in 4 groups
Other otolaryngology specialists in Frisco 5
Same specialty, same city.
Trained at University of Texas Medical Branch at Galveston 8
Other providers in the same specialty who trained at the same institution.
Class of 1988 at University of Texas Medical Branch at Galveston 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 TX who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Littlejohn?
Dr. Littlejohn is an otolaryngology (ent) in Frisco, TX. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Littlejohn's address?
Dr. Littlejohn is listed at 8380 Warren Pkwy Ste 504, Frisco, TX 75034. 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. Littlejohn?
The number on file is (972) 596-4005. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Littlejohn's NPI number?
Dr. Littlejohn's National Provider Identifier is 1932176252. 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. Littlejohn train?
Dr. Littlejohn attended University of Texas Medical Branch at Galveston, graduating in 1988. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Littlejohn been practicing?
Dr. Littlejohn has 38 years experience. Calculated from a graduation year of 1988, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Littlejohn perform?
According to Medicare billing data, Dr. Littlejohn performs procedures including diagnostic exam of voice box using a flexible endoscope, removal of impacted ear wax and diagnostic exam of nasal passages using an endoscope; provides treatments such as repositioning exercises of head for treatment of dizziness, each day, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Littlejohn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Littlejohn. If this is you, claiming it is free.
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