Terrence Day, MD
NPI 1659484608 · Otolaryngology Physician · Charleston, SC
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terrence Day, MD is a Otolaryngology Physician provider in Charleston, SC (NPI 1659484608).
Provider details
- NPI number
- 1659484608
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 21413 (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
19 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
478 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 79 | $169 |
| Treatment of Swallowing and Feeding Disorder92526 | 75 | $79 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 70 | $119 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 49 | $117 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 47 | $206 |
| Evaluation of Swallowing Function92610 | 46 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$189 across 7 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
- 2006-08-16
- Last updated
- 2010-11-05
Frequently asked questions
- What is Terrence Day's NPI number?
- Terrence Day's National Provider Identifier (NPI) is 1659484608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terrence Day's specialty?
- Terrence Day is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Terrence Day located?
- Terrence Day's practice location on file with NPPES is 171 Ashley Ave, Charleston, SC 29425-0001.
- What is Terrence Day's phone number?
- The practice phone number listed in the NPPES registry for Terrence Day is (843) 792-1414.
- Does Terrence Day accept Medicare?
- Terrence Day is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Terrence Day's NPI active?
- Yes — Terrence Day's NPI (1659484608) is active in the NPPES registry as of the last update on 2010-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.