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Edit this profileAt a glance
- 169 Ashley Ave, Room 202 Main Hospital Msc333, Charleston, SC 29425
About Dr. Costello
Mark S. Costello, M.D. practices otolaryngology (ent) in Charleston, SC. Mark is a 2016 graduate of University of Cincinnati College of Medicine. According to Medicare claims data, Mark cared for 664 Medicare patients across 748 services. 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 low level of medical decision making, if using time, 30 minutes or more, and diagnostic exam of voice box using a flexible endoscope. The provider's National Provider Identifier (NPI) is 1497103550.
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
- (843) 792-8299
- Email not available
Practice Locations
169 ASHLEY AVE ROOM 202 MAIN HOSPITAL MSC333
Charleston, SC 29425
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
748 services · 664 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
84 | More often than most peers in Otolaryngology (ENT) |
| Removal of impacted ear wax | Procedure | 69210 |
78 | As often as other peers in Otolaryngology (ENT) |
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
72 | As often as other 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 |
219 | More often 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 |
189 | More than most 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 |
37 | Less 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 |
30 | Less often than most peers in Otolaryngology (ENT) |
| New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more | Office visit | 99202 |
20 | As often as other peers in Otolaryngology (ENT) |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
19 | Less often than most 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.
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 otolaryngology specialists in Charleston 8
Same specialty, same city.
Trained at University of Cincinnati College of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2016 at University of Cincinnati College of Medicine 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 SC who bill this service to Medicare most often.
Common questions
What kind of doctor is Mark S. Costello?
Mark S. Costello is an otolaryngology (ent) in Charleston, SC. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mark S. Costello's address?
Mark S. Costello is listed at 169 Ashley Ave Room 202 Main Hospital Msc333, Charleston, SC 29425. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mark S. Costello?
The number on file is (843) 792-8299. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark S. Costello's NPI number?
Mark S. Costello's National Provider Identifier is 1497103550. 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 S. Costello train?
Mark S. Costello attended University of Cincinnati College of Medicine, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark S. Costello been practicing?
Mark S. Costello has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mark S. Costello perform?
According to Medicare billing data, Mark S. Costello 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, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark S. Costello confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark S. Costello. If this is you, claiming it is free.
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