Mark Costello, M.D.
NPI 1497103550 · Otolaryngology Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Costello, M.D. is a Otolaryngology Physician provider in Charleston, SC (NPI 1497103550).
Provider details
- NPI number
- 1497103550
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MMD.39504 LL (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
748 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 219 | $84 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 189 | $104 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 84 | $116 |
| Removal of Impacted Ear Wax69210 | 78 | $42 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 72 | $160 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 37 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 148 | 67 |
| Famotidine | 50 | 23 |
| Pantoprazole Sodium | 46 | 35 |
| Ipratropium Bromide | 45 | 24 |
| Amoxicillin | 44 | 40 |
| Azelastine Hcl | 39 | 22 |
| Ofloxacin | 32 | 28 |
| Doxycycline Hyclate | 31 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-31
- Last updated
- 2016-05-31
Frequently asked questions
- What is Mark Costello's NPI number?
- Mark Costello's National Provider Identifier (NPI) is 1497103550, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Costello's specialty?
- Mark Costello is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Costello located?
- Mark Costello's practice location on file with NPPES is 169 Ashley Ave, Charleston, SC 29425-8905.
- What is Mark Costello's phone number?
- The practice phone number listed in the NPPES registry for Mark Costello is (843) 792-8299.
- Does Mark Costello accept Medicare?
- Mark Costello is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Costello's NPI active?
- Yes — Mark Costello's NPI (1497103550) is active in the NPPES registry as of the last update on 2016-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.