Nathan Claydon, MD
NPI 1023453271 · Internal Medicine Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Claydon, MD is a Internal Medicine Physician provider in Chattanooga, TN (NPI 1023453271).
Provider details
- NPI number
- 1023453271
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 142159 (CA)
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
13 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
1,251 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 482 | $122 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 178 | $81 |
| Critical Care, First 30-74 Minutes99291 | 178 | $217 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 155 | $119 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 101 | $179 |
| Advance Care Planning, First 30 Minutes99497 | 39 | $78 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$570 across 13 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
- 2013-05-01
- Last updated
- 2019-03-19
Frequently asked questions
- What is Nathan Claydon's NPI number?
- Nathan Claydon's National Provider Identifier (NPI) is 1023453271, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Claydon's specialty?
- Nathan Claydon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Claydon located?
- Nathan Claydon's practice location on file with NPPES is 960 East 3rd St, Chattanooga, TN 37403.
- What is Nathan Claydon's phone number?
- The practice phone number listed in the NPPES registry for Nathan Claydon is (786) 427-5291.
- Does Nathan Claydon accept Medicare?
- Nathan Claydon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Claydon's NPI active?
- Yes — Nathan Claydon's NPI (1023453271) is active in the NPPES registry as of the last update on 2019-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.