Dr. Stefanie M. Diaz, MD
- Medicare services, 2024
- 1,239
- Medicare patients, 2024
- 414
- Part D claims, 2024
- 1,026
- Hospital affiliations
- 6
- Industry payments
- $1,413
- Practice address
- 1133 Medical Dr, Tyler, TX 75701
- Practice phone
- Call (903) 595-5486
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Centers for Kidney Care
Tyler, Texas
Find Dr. Diaz's professional email, personal email and mobile number
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Dr. Stefanie M. Diaz is a nephrologist in Tyler, Texas
Dr. Diaz practices at The Centers for Kidney Care in Tyler, Texas.
Dr. Diaz's NPI, 1689723637, was assigned on January 9, 2007. Dr. Diaz graduated from Tech- Ed Fndn Souza Marques Sch Med in 1992. Dr. Diaz holds Texas license K8739.
- NPI
- 1689723637NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547322638
- NPI enumeration date
- January 9, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (903) 595-5486
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stefanie M. Diaz practices at The Centers for Kidney Care in Tyler, Texas
Dr. Diaz's primary practice is The Centers for Kidney Care, at 1133 Medical Dr, Tyler, TX 75701 in Smith County. The practice phone is (903) 595-5486.
- The Centers for Kidney Care1133 Medical Dr, Tyler, TX 75701 · Smith CountyPhone(903) 595-5486
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stefanie M. Diaz is affiliated with 11 sites of care and 2 medical groups
Dr. Diaz's primary practice is The Centers for Kidney Care in Tyler, Texas. Dr. Diaz is also affiliated with CHRISTUS Mother Frances Hospital - Tyler. The medical group on file is The Centers for Kidney Care. Dmand AI also links Dr. Diaz to 5 more hospitals, 2 dialysis centers, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stefanie M. Diaz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Diaz practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Centers for Kidney Care | Available with a free account |
| +10 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stefanie M. Diaz is one of 1,045 nephrologists in Texas
Nephrology is Dr. Diaz's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Diaz is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Diaz's licenses on file in 3 states: Texas, Oklahoma and Illinois.
Specialties and state licenses
- Nephrology, TexasPrimary
- Oklahoma license
- Illinois license
Clinical focus
Dmand AI lists acute kidney failure, chronic kidney disease and hypercalcemia among the conditions Dr. Diaz treats.
Nephrologists near Dr. Diaz
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. Stefanie M. Diaz billed Medicare for 1,239 services in 2024
CMS data shows 1,239 Medicare services from Dr. Diaz across 14 procedure codes in 2024, for 414 Medicare patients. Medicare paid $117,233 for them.
Dr. Diaz's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8612024: 59631%
- Tests and treatments
- 2023: 6042024: 54410%
- Other services
- 2023: 02024: 99
Where Dr. Diaz's Medicare services took place, 2024
- In an office79564%
- In a facility44436%
Dr. Diaz compared with the Texas median for nephrologists, 2024
- Dr. Diaz
- Texas median
- Medicare services
- 1,239vs 1,04818% above
- Medicare patients
- 414vs 27749% above
- Part D claims
- 887vs 75817% above
Medians across 1,017 nephrologists in Texas with Dmand AI profiles that report each measure.
Dr. Diaz's most billed Medicare procedure codes, 2024
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. Diaz?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Diaz and other nephrologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stefanie M. Diaz treated 414 Medicare patients in 2024, average age 71
CMS counts 414 Medicare patients who saw Dr. Diaz in 2024. The largest group is 65 to 74, with 140 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 21% are also on Medicaid. Their average risk score is 4.51, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Diaz's median patient age at 68, with 46% women.
Dr. Diaz's Medicare patients by age, 2024
Dr. Diaz's Medicare patients by sex, 2024
- Women20149%
- Men21351%
Chronic conditions among Dr. Diaz's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes63%
- Heart failure55%
- Ischemic heart disease53%
- Arthritis51%
- Atrial fibrillation37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Diaz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stefanie M. Diaz wrote 1,026 Medicare Part D claims in 2024
In 2024, Dr. Diaz wrote 1,026 Medicare Part D claims for 180 patients. 93% of them were for generic drugs. CMS names the drug for 887 of them, across 22 drugs with 11 or more claims each, at $119,816 in total drug cost. In 2023, CMS named 662 claims across 18 drugs.
Dr. Diaz's Part D claims by kind of drug, 2024
- Generic957 claims93%
- Brand-name69 claims7%
Dr. Diaz'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. Diaz's Part D claims, 2024
- Antibiotics2%24 of 1,026 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: 6622024: 88734%
Drugs named by CMS: 22 in 2024, 18 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
Dr. Stefanie M. Diaz offers telehealth to Medicare patients
Dr. Diaz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Diaz as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Stefanie M. Diaz received $1,413 in industry payments from 2016 to 2025
CMS Open Payments shows 51 general payments to Dr. Diaz from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $220.
General payments to Dr. Diaz by program year, 2016 to 2025
General payments to Dr. Diaz by kind, 2016 to 2025
- Food and beverage$1,39799%
- Education$171%
Companies that paid Dr. Diaz 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. Stefanie M. Diaz has 1 award and honors on record
Dmand AI lists 1 award for Dr. Diaz, most recently CMS Stage 1 2012 in 2012.
Awards and honors for Dr. Diaz
- 2012
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Stefanie M. Diaz graduated from Tech- Ed Fndn Souza Marques Sch Med
Dr. Diaz graduated from Tech- Ed Fndn Souza Marques Sch Med in 1992.
- Medical school
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Stefanie M. Diaz accepts plans from 23 insurance carriers
Dr. Diaz is in network with 23 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 14. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Cigna
- HCSC
- Humana
- Alliant Health Plans
- +15 more carriersWith a free account
Plan types Dr. Diaz accepts, by number of carriers
- PPO14
- HMO13
- Medicare11
- POS6
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Stefanie M. Diaz'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Stefanie M. Diaz
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. Stefanie M. Diaz's NPI number?
Dr. Stefanie M. Diaz's NPI number is 1689723637. It was assigned on January 9, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Stefanie M. Diaz?
Dr. Stefanie M. Diaz is a nephrologist in Tyler, Texas. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Stefanie M. Diaz practice?
Dr. Diaz practices at 1133 Medical Dr, Tyler, TX 75701. Dr. Diaz's primary practice is The Centers for Kidney Care in Tyler, Texas. Dmand AI also links Dr. Diaz to 5 hospitals, 2 dialysis centers, 2 group practices and clinics and 1 medical group.
What is Dr. Stefanie M. Diaz's office phone number?
The practice phone on file for Dr. Diaz is (903) 595-5486.
What is Dr. Stefanie M. Diaz's medical license number?
Dr. Diaz holds Texas license K8739, one of the licenses on file in 3 states.
Which states has Dr. Stefanie M. Diaz been licensed in?
Dmand AI has state licenses on file for Dr. Diaz in Texas (1999 to 2027), Oklahoma (2018 to 2024) and Illinois (1996 to 2005).
Which hospitals is Dr. Stefanie M. Diaz affiliated with?
Dr. Diaz is affiliated with CHRISTUS Mother Frances Hospital - Tyler. Dmand AI links Dr. Diaz to 5 more hospitals.
What medical group is Dr. Stefanie M. Diaz part of?
Dr. Diaz is linked to The Centers for Kidney Care. Dmand AI links Dr. Diaz to 1 more medical group.
Does Dr. Stefanie M. Diaz accept Medicare?
Yes. CMS data shows Dr. Diaz billed Medicare for 1,239 services in 2024, and Dr. Diaz accepts Medicare assignment.
Does Dr. Stefanie M. Diaz offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Diaz as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Stefanie M. Diaz see?
CMS counts 414 Medicare patients who saw Dr. Diaz in 2024, with an average age of 71.
Is Dr. Stefanie M. Diaz board certified?
Yes. Dr. Diaz is board certified in nephrology by the American Board of Internal Medicine.
What services does Dr. Stefanie M. Diaz bill to Medicare?
In 2024, Dr. Diaz's most billed Medicare services were hospital inpatient care (99232), dialysis (90970) and dialysis (90960).
Where did Dr. Stefanie M. Diaz go to medical school?
Dr. Diaz graduated from Tech- Ed Fndn Souza Marques Sch Med in 1992.
What drugs does Dr. Stefanie M. Diaz prescribe most?
In 2024 Medicare Part D data, Dr. Diaz's most prescribed drugs by claims were Calcitriol, Sevelamer Carbonate and Furosemide.
Has Dr. Stefanie M. Diaz received payments from drug or device companies?
CMS Open Payments shows $1,413 in general payments to Dr. Diaz from 17 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Stefanie M. Diaz been practicing?
Dr. Diaz graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Stefanie M. Diaz accept?
Dr. Diaz is in network with 23 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 14. Check the plan with the practice before a visit.
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