Dr. Sheldon C. Chaffer II, MD
- Medicare services, 2022
- 124
- Part D claims, 2024
- 1,545
- Hospital affiliations
- 2
- Industry payments
- $1,191
- Medical groups
- 3
- Practice address
- 1507 W Main Street, Gatesville, TX 76528
- Practice phone
- Call (254) 865-8251
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chaffer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Sheldon C. Chaffer II is a nephrologist in Gatesville, Texas
Dr. Chaffer practices at Coryell Memorial Hospital in Gatesville, Texas, part of Coryell Health.
Dr. Chaffer's NPI, 1598727844, was assigned on April 3, 2006. Dr. Chaffer graduated from McGovern Medical School in 2000. Dr. Chaffer holds Texas license L3937.
- NPI
- 1598727844NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1456302660
- NPI enumeration date
- April 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (254) 865-8251
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sheldon C. Chaffer II practices at Coryell Memorial Hospital in Gatesville, Texas
Dr. Chaffer's primary practice is Coryell Memorial Hospital, at 1507 W Main Street, Gatesville, TX 76528 in Coryell County. The practice phone is (254) 865-8251.
- Coryell Memorial Hospital1507 W Main Street, Gatesville, TX 76528 · Coryell CountyPhone(254) 865-8251
Source: Dmand AI Affiliation Data
Dr. Sheldon C. Chaffer II is affiliated with 3 sites of care and 3 medical groups
Dr. Chaffer's primary practice is Coryell Memorial Hospital in Gatesville, Texas, part of Coryell Health. Dr. Chaffer is also affiliated with Goodall-Witcher Hospital. The medical group on file is Coryell Health. Dmand AI also links Dr. Chaffer to 2 more medical groups and 1 skilled nursing facility, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sheldon C. Chaffer II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chaffer practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Coryell Memorial Hospital | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Coryell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Sheldon C. Chaffer II is one of 1,045 nephrologists in Texas
Nephrology is Dr. Chaffer's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Chaffer is board certified in internal medicine by the American Board of Internal Medicine. Dr. Chaffer is licensed in Texas.
Specialties and state licenses
- Nephrology, TexasPrimary
Clinical focus
Dmand AI lists chronic kidney disease among the conditions Dr. Chaffer treats.
Nephrologists near Dr. Chaffer
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Sheldon C. Chaffer II billed Medicare for 124 services in 2022
CMS data shows 124 Medicare services from Dr. Chaffer across 2 procedure codes in 2022. Medicare paid $9,727 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chaffer's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 2082022: 12440%
Dr. Chaffer compared with the Texas median for nephrologists, 2022
- Dr. Chaffer
- Texas median
- Medicare services
- 124vs 1,04888% below
- Part D claims
- 1,251vs 75865% above
Medians across 1,017 nephrologists in Texas with Dmand AI profiles that report each measure.
Dr. Chaffer's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chaffer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chaffer and other nephrologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sheldon C. Chaffer II's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Chaffer's median patient age at 75, with 48% women.
Dr. Chaffer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women48%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. Sheldon C. Chaffer II wrote 1,545 Medicare Part D claims in 2024
In 2024, Dr. Chaffer wrote 1,545 Medicare Part D claims for 182 patients. 85% of them were for generic drugs. CMS names the drug for 1,251 of them, across 31 drugs with 11 or more claims each, at $100,732 in total drug cost. In 2023, CMS named 1,030 claims across 30 drugs.
Dr. Chaffer's Part D claims by kind of drug, 2024
- Generic1,309 claims85%
- Brand-name236 claims15%
Dr. Chaffer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chaffer's Part D claims, 2024
- Antibiotics1%20 of 1,545 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,0302024: 1,25121%
Drugs named by CMS: 31 in 2024, 30 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Sheldon C. Chaffer II takes part in Medicare
Dr. Chaffer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Sheldon C. Chaffer II received $1,191 in industry payments from 2016 to 2025
CMS Open Payments shows 63 general payments to Dr. Chaffer from 18 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $266.
General payments to Dr. Chaffer by program year, 2016 to 2025
Companies that paid Dr. Chaffer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sheldon C. Chaffer II graduated from McGovern Medical School
Dr. Chaffer graduated from McGovern Medical School in 2000.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Sheldon C. Chaffer II accepts plans from 16 insurance carriers
Dr. Chaffer is in network with 16 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Alliant Health Plans
- Aspirus Health Plan
- HCSC
- Humana
- +8 more carriersWith a free account
Plan types Dr. Chaffer accepts, by number of carriers
- HMO10
- PPO9
- POS6
- EPO4
- Medicare4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sheldon C. Chaffer II's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Sheldon C. Chaffer II
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Sheldon C. Chaffer II's NPI number?
Dr. Sheldon C. Chaffer II's NPI number is 1598727844. It was assigned on April 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Sheldon C. Chaffer II?
Dr. Sheldon C. Chaffer II is a nephrologist in Gatesville, Texas. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Sheldon C. Chaffer II practice?
Dr. Chaffer practices at 1507 W Main Street, Gatesville, TX 76528. Dr. Chaffer's primary practice is Coryell Memorial Hospital in Gatesville, Texas, part of Coryell Health. Dmand AI also links Dr. Chaffer to 2 medical groups and 1 skilled nursing facility.
What is Dr. Sheldon C. Chaffer II's office phone number?
The practice phone on file for Dr. Chaffer is (254) 865-8251.
What is Dr. Sheldon C. Chaffer II's medical license number?
Dr. Chaffer holds Texas license L3937.
Which hospitals is Dr. Sheldon C. Chaffer II affiliated with?
Dr. Chaffer practices at Coryell Memorial Hospital in Gatesville, Texas. Dr. Chaffer is also affiliated with Goodall-Witcher Hospital.
What medical group is Dr. Sheldon C. Chaffer II part of?
Dr. Chaffer is linked to Coryell Health. Dmand AI links Dr. Chaffer to 2 more medical groups.
Does Dr. Sheldon C. Chaffer II accept Medicare?
Yes. CMS data shows Dr. Chaffer billed Medicare for 124 services in 2022, and Dr. Chaffer accepts Medicare assignment.
Is Dr. Sheldon C. Chaffer II board certified?
Yes. Dr. Chaffer is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Sheldon C. Chaffer II bill to Medicare?
In 2022, Dr. Chaffer's most billed Medicare services were hospital inpatient care (99233) and hospital inpatient care (99239).
Show 5 more questionsShow fewer questions
Where did Dr. Sheldon C. Chaffer II go to medical school?
Dr. Chaffer graduated from McGovern Medical School in 2000.
What drugs does Dr. Sheldon C. Chaffer II prescribe most?
In 2024 Medicare Part D data, Dr. Chaffer's most prescribed drugs by claims were Torsemide, Jardiance and Lisinopril.
Has Dr. Sheldon C. Chaffer II received payments from drug or device companies?
CMS Open Payments shows $1,191 in general payments to Dr. Chaffer from 18 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Sheldon C. Chaffer II been practicing?
Dr. Chaffer graduated from medical school in 2000, 26 years ago.
What insurance does Dr. Sheldon C. Chaffer II accept?
Dr. Chaffer is in network with 16 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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