Nathan Chamberlain, M.D.
NPI 1134126246 · Nephrology Physician · Chattanooga, TN
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Chamberlain, M.D. is a Nephrology Physician provider in Chattanooga, TN (NPI 1134126246).
Provider details
- NPI number
- 1134126246
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 29919 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
8,127 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 | 647 | $114 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 566 | $101 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 435 | $10 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 412 | $47 |
| Phosphate Level84100 | 395 | $5 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 92 | 26 |
| Losartan Potassium | 84 | 29 |
| Amlodipine Besylate | 68 | 20 |
| Spironolactone | 55 | 17 |
| Carvedilol | 46 | — |
| Torsemide | 37 | 13 |
| Potassium Citratebrand: Potassium Citrate Er | 37 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$112 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
- 2005-07-05
- Last updated
- 2010-05-28
Frequently asked questions
- What is Nathan Chamberlain's NPI number?
- Nathan Chamberlain's National Provider Identifier (NPI) is 1134126246, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Chamberlain's specialty?
- Nathan Chamberlain is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Chamberlain located?
- Nathan Chamberlain's practice location on file with NPPES is 251 N Lyerly St Ste 100, Chattanooga, TN 37404-2728.
- What is Nathan Chamberlain's phone number?
- The practice phone number listed in the NPPES registry for Nathan Chamberlain is (423) 826-8000.
- Does Nathan Chamberlain accept Medicare?
- Nathan Chamberlain is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Chamberlain's NPI active?
- Yes — Nathan Chamberlain's NPI (1134126246) is active in the NPPES registry as of the last update on 2010-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.