Dr. Stephen John Chalmers, MD
- Medicare services, 2024
- 1,216
- Medicare patients, 2024
- 328
- Part D claims, 2024
- 1,057
- MIPS score, 2024
- 73
- Hospital affiliations
- 6
- Practice address
- 1138 South Bowen Road, Arlington, TX 76013
- Practice phone
- Call (817) 265-7115
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ameri-Tech Kidney Center Arlington
Dialysis Center - Independent · Arlington, Texas
Find Dr. Chalmers' 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. Stephen John Chalmers is a nephrologist in Arlington, Texas
Dr. Chalmers practices at Ameri-Tech Kidney Center Arlington in Arlington, Texas.
Dr. Chalmers' NPI, 1134166143, was assigned on May 31, 2006. Dr. Chalmers graduated from University Of Cincinnati College Of Medicine in 2002. Dr. Chalmers holds Texas license M9916.
- NPI
- 1134166143NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2567530835
- NPI enumeration date
- May 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (817) 265-7115
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen John Chalmers practices at Ameri-Tech Kidney Center Arlington in Arlington, Texas
Dr. Chalmers' primary practice is Ameri-Tech Kidney Center Arlington, at 1138 South Bowen Road, Arlington, TX 76013 in Tarrant County. The practice phone is (817) 265-7115.
- Ameri-Tech Kidney Center Arlington1138 South Bowen Road, Arlington, TX 76013 · Tarrant CountyPhone(817) 265-7115
Source: Dmand AI Affiliation Data
Dr. Stephen John Chalmers is affiliated with 9 sites of care and 1 medical group
Dr. Chalmers' primary practice is Ameri-Tech Kidney Center Arlington in Arlington, Texas. Dr. Chalmers is also affiliated with Medical City Arlington Hospital. The medical group on file is North Texas Nephrology Associates. Dmand AI also links Dr. Chalmers to 5 more hospitals, 1 dialysis center and 1 group practice or clinic, 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. Stephen John Chalmers' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chalmers practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ameri-Tech Kidney Center Arlington | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen John Chalmers is one of 1,045 nephrologists in Texas
Nephrology is Dr. Chalmers' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Chalmers is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Chalmers' licenses on file in 2 states: Texas and Kentucky.
Specialties and state licenses
- Nephrology, TexasPrimary
- Kentucky license
Clinical focus
Dmand AI lists acute kidney failure, chronic anemia, chronic kidney disease, electrolyte disorders, fluid and electrolyte imbalances, gout, hypercalcemia and parathyroid gland disorder among the conditions Dr. Chalmers treats.
Nephrologists near Dr. Chalmers
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. Stephen John Chalmers billed Medicare for 1,216 services in 2024
CMS data shows 1,216 Medicare services from Dr. Chalmers across 9 procedure codes in 2024, for 328 Medicare patients. Medicare paid $129,971 for them.
Dr. Chalmers' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8562024: 9015%
- Tests and treatments
- 2023: 3502024: 31510%
Where Dr. Chalmers' Medicare services took place, 2024
- In an office55746%
- In a facility65954%
Dr. Chalmers compared with the Texas median for nephrologists, 2024
- Dr. Chalmers
- Texas median
- Medicare services
- 1,216vs 1,04816% above
- Medicare patients
- 328vs 27718% above
- Part D claims
- 781vs 758Close to median
Medians across 1,017 nephrologists in Texas with Dmand AI profiles that report each measure.
Dr. Chalmers' 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chalmers and other nephrologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen John Chalmers treated 328 Medicare patients in 2024, average age 74
CMS counts 328 Medicare patients who saw Dr. Chalmers in 2024. The largest group is 75 to 84, with 124 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 15% are also on Medicaid. Their average risk score is 4.21, 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. Chalmers' median patient age at 72, with 48% women.
Dr. Chalmers' Medicare patients by age, 2024
Dr. Chalmers' Medicare patients by sex, 2024
- Women15447%
- Men17453%
Chronic conditions among Dr. Chalmers' Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes62%
- Ischemic heart disease57%
- Arthritis52%
- Heart failure52%
- Atrial fibrillation42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chalmers' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women48%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen John Chalmers wrote 1,057 Medicare Part D claims in 2024
In 2024, Dr. Chalmers wrote 1,057 Medicare Part D claims for 180 patients. 78% of them were for generic drugs. CMS names the drug for 781 of them, across 27 drugs with 11 or more claims each, at $89,003 in total drug cost. In 2023, CMS named 597 claims across 24 drugs.
Dr. Chalmers' Part D claims by kind of drug, 2024
- Generic829 claims78%
- Brand-name228 claims22%
Dr. Chalmers' 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. Chalmers' Part D claims, 2024
- Antibiotics3%29 of 1,057 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: 5972024: 78131%
Drugs named by CMS: 27 in 2024, 24 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. Stephen John Chalmers scored 73 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 73 out of 100 for Dr. Chalmers for performance year 2024, reported individually. Dr. Chalmers accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chalmers' MIPS scores, performance year 2024
- 73of 100Final score
- 38.4of 100Quality
- 40of 100Improvement Activities
- 75of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Stephen John Chalmers received $3,503 in industry payments from 2016 to 2025
CMS Open Payments shows 162 general payments to Dr. Chalmers from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Amgen Inc. paid the most, $669.
General payments to Dr. Chalmers by program year, 2016 to 2025
General payments to Dr. Chalmers by kind, 2016 to 2025
- Food and beverage$3,40597%
- Education$983%
Companies that paid Dr. Chalmers 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. Stephen John Chalmers has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chalmers, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Chalmers
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Stephen John Chalmers graduated from University Of Cincinnati College Of Medicine
Dr. Chalmers graduated from University Of Cincinnati College Of Medicine in 2002. Dr. Chalmers is a member of ACP, AMA, ASN and NKF.
- Medical school
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Stephen John Chalmers accepts plans from 19 insurance carriers
Dr. Chalmers is in network with 19 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Cigna
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- +11 more carriersWith a free account
Plan types Dr. Chalmers accepts, by number of carriers
- PPO13
- HMO10
- Medicare8
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Stephen John Chalmers'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 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)Clinician Public Reporting: Overall MIPS Performance (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. Stephen John Chalmers
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. Stephen John Chalmers' NPI number?
Dr. Stephen John Chalmers' NPI number is 1134166143. It was assigned on May 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen John Chalmers?
Dr. Stephen John Chalmers is a nephrologist in Arlington, Texas. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Stephen John Chalmers practice?
Dr. Chalmers practices at 1138 South Bowen Road, Arlington, TX 76013. Dr. Chalmers' primary practice is Ameri-Tech Kidney Center Arlington in Arlington, Texas. Dmand AI also links Dr. Chalmers to 5 hospitals, 1 dialysis center and 1 group practice or clinic.
What is Dr. Stephen John Chalmers' office phone number?
The practice phone on file for Dr. Chalmers is (817) 265-7115.
What is Dr. Stephen John Chalmers' medical license number?
Dr. Chalmers holds Texas license M9916, one of the licenses on file in 2 states.
Which states has Dr. Stephen John Chalmers been licensed in?
Dmand AI has state licenses on file for Dr. Chalmers in Texas (2008 to 2026) and Kentucky (2004 to 2009).
Which hospitals is Dr. Stephen John Chalmers affiliated with?
Dr. Chalmers is affiliated with Medical City Arlington Hospital. Dmand AI links Dr. Chalmers to 5 more hospitals.
What medical group is Dr. Stephen John Chalmers part of?
Dr. Chalmers is linked to North Texas Nephrology Associates.
Does Dr. Stephen John Chalmers accept Medicare?
Yes. CMS data shows Dr. Chalmers billed Medicare for 1,216 services in 2024, and Dr. Chalmers accepts Medicare assignment.
What is Dr. Stephen John Chalmers' MIPS score?
Dr. Chalmers' MIPS final score for performance year 2024 is 73 out of 100, reported individually.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Stephen John Chalmers see?
CMS counts 328 Medicare patients who saw Dr. Chalmers in 2024, with an average age of 74.
Is Dr. Stephen John Chalmers board certified?
Yes. Dr. Chalmers is board certified in nephrology by the American Board of Internal Medicine.
What services does Dr. Stephen John Chalmers bill to Medicare?
In 2024, Dr. Chalmers' most billed Medicare services were hospital inpatient care (99232), dialysis (90960) and office visit, established patient (99214).
Where did Dr. Stephen John Chalmers go to medical school?
Dr. Chalmers graduated from University Of Cincinnati College Of Medicine in 2002.
What drugs does Dr. Stephen John Chalmers prescribe most?
In 2024 Medicare Part D data, Dr. Chalmers' most prescribed drugs by claims were Prosol, Furosemide and Amlodipine Besylate.
Has Dr. Stephen John Chalmers received payments from drug or device companies?
CMS Open Payments shows $3,503 in general payments to Dr. Chalmers from 32 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Stephen John Chalmers been practicing?
Dr. Chalmers graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Stephen John Chalmers accept?
Dr. Chalmers is in network with 19 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 13. Check the plan with the practice before a visit.
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