Sheldon Chaffer, M.D.
NPI 1598727844 · Nephrology Physician · Gatesville, TX
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sheldon Chaffer, M.D. is a Nephrology Physician provider in Gatesville, TX (NPI 1598727844).
Provider details
- NPI number
- 1598727844
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- L3937 (TX)
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 tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
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 |
|---|---|---|
| Torsemide | 172 | 45 |
| Empagliflozinbrand: Jardiance | 115 | 14 |
| Lisinopril | 113 | 32 |
| Potassium Chloride | 104 | 29 |
| Losartan Potassium | 83 | 19 |
| Spironolactone | 51 | — |
| Furosemide | 48 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$153 across 4 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
- 2006-04-03
- Last updated
- 2023-04-17
- Certified
- 2023-04-17
Frequently asked questions
- What is Sheldon Chaffer's NPI number?
- Sheldon Chaffer's National Provider Identifier (NPI) is 1598727844, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sheldon Chaffer's specialty?
- Sheldon Chaffer is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Sheldon Chaffer located?
- Sheldon Chaffer's practice location on file with NPPES is 1507 W Main St, Gatesville, TX 76528-1024.
- What is Sheldon Chaffer's phone number?
- The practice phone number listed in the NPPES registry for Sheldon Chaffer is (254) 865-2166.
- Does Sheldon Chaffer accept Medicare?
- Sheldon Chaffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sheldon Chaffer's NPI active?
- Yes — Sheldon Chaffer's NPI (1598727844) is active in the NPPES registry as of the last update on 2023-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.