Dr. Alexander Thomas Williams, MD
- Medicare services, 2024
- 859
- Medicare patients, 2024
- 544
- Part D claims, 2024
- 336
- MIPS score, 2024
- 99
- Hospital affiliations
- 2
- Practice address
- 5252 West University Drive, Mckinney, TX 75071
- Practice phone
- Call (469) 742-2200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Williams' professional email, personal email and mobile number
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Dr. Alexander Thomas Williams is an emergency medicine physician in Mckinney, Texas
Dr. Williams practices at Baylor Scott & White Medical Center - McKinney in Mckinney, Texas, part of Baylor Scott & White Health.
Dr. Williams' NPI, 1134615917, was assigned on July 5, 2018. Dr. Williams graduated from Texas Tech University Health Sciences Center School of Medicine in 2018. Dr. Williams holds Texas license S9626.
- NPI
- 1134615917NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052710944
- NPI enumeration date
- July 5, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (469) 742-2200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander Thomas Williams practices at Baylor Scott & White Medical Center - McKinney in Mckinney, Texas
Dr. Williams' primary practice is Baylor Scott & White Medical Center - McKinney, at 5252 West University Drive, Mckinney, TX 75071 in Collin County. The practice phone is (469) 742-2200.
- Baylor Scott & White Medical Center - McKinney5252 West University Drive, Mckinney, TX 75071 · Collin CountyPhone(469) 742-2200
Source: Dmand AI Affiliation Data
Dr. Alexander Thomas Williams is affiliated with 2 sites of care and 2 medical groups
Dr. Williams' primary practice is Baylor Scott & White Medical Center - McKinney in Mckinney, Texas, part of Baylor Scott & White Health. Dr. Williams is also affiliated with Sherman Medical Center. The medical group on file is Baylor Scott & White Health. Dmand AI also links Dr. Williams to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexander Thomas Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baylor Scott & White Medical Center - McKinney | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Baylor Scott & White Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Alexander Thomas Williams is one of 4,831 emergency medicine physicians in Texas
Emergency medicine is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Williams is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Williams' licenses on file in 2 states: Texas and Florida.
Specialties and state licenses
- Emergency medicine, TexasPrimary
- Student in an organized health care education/training program, Florida
Emergency medicine physicians near Dr. Williams
Counts of emergency medicine physicians 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. Alexander Thomas Williams billed Medicare for 859 services in 2024
CMS data shows 859 Medicare services from Dr. Williams across 4 procedure codes in 2024, for 544 Medicare patients. Medicare paid $81,556 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Williams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6632024: 56315%
- Tests and treatments
- 2023: 4472024: 29634%
- Imaging
- 2023: 442024: 0100%
Dr. Williams compared with the Texas median for emergency medicine physicians, 2024
- Dr. Williams
- Texas median
- Medicare services
- 859vs 2253.8 times
- Medicare patients
- 544vs 2062.6 times
- Part D claims
- 200vs 742.7 times
Medians across 4,588 emergency medicine physicians in Texas with Dmand AI profiles that report each measure.
Dr. Williams' 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexander Thomas Williams treated 544 Medicare patients in 2024, average age 76
CMS counts 544 Medicare patients who saw Dr. Williams in 2024. The largest group is 75 to 84, with 220 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 2.11, 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. Williams' median patient age at 51, with 60% women.
Dr. Williams' Medicare patients by age, 2024
Dr. Williams' Medicare patients by sex, 2024
- Women31658%
- Men22842%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Ischemic heart disease47%
- Chronic kidney disease42%
- Diabetes42%
- Mood disorders42%
- Anxiety41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander Thomas Williams wrote 336 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 336 Medicare Part D claims for 212 patients. 92% of them were for generic drugs. CMS names the drug for 200 of them, across 8 drugs with 11 or more claims each, at $1,884 in total drug cost. In 2023, CMS named 177 claims across 9 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic308 claims92%
- Brand-name28 claims8%
Dr. Williams' 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. Williams' Part D claims, 2024
- Opioids11%36 of 336 claims
- Antibiotics28%94 of 336 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: 1772024: 20013%
Drugs named by CMS: 8 in 2024, 9 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. Alexander Thomas Williams scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Williams for performance year 2024, reported as part of a group. Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Williams' MIPS scores, performance year 2024
- 99of 100Final score
- 93.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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. Alexander Thomas Williams graduated from Texas Tech University Health Sciences Center School of Medicine
Dr. Williams graduated from Texas Tech University Health Sciences Center School of Medicine in 2018.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Alexander Thomas Williams accepts plans from 16 insurance carriers
Dr. Williams is in network with 16 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Excellus BlueCross BlueShield
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- Baylor Scott and White
- +8 more carriersWith a free account
Plan types Dr. Williams accepts, by number of carriers
- HMO10
- PPO9
- Medicare6
- POS6
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Alexander Thomas Williams'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) |
| 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. Alexander Thomas Williams
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. Alexander Thomas Williams' NPI number?
Dr. Alexander Thomas Williams' NPI number is 1134615917. It was assigned on July 5, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander Thomas Williams?
Dr. Alexander Thomas Williams is an emergency medicine physician in Mckinney, Texas. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Alexander Thomas Williams practice?
Dr. Williams practices at 5252 West University Drive, Mckinney, TX 75071. Dr. Williams' primary practice is Baylor Scott & White Medical Center - McKinney in Mckinney, Texas, part of Baylor Scott & White Health. Dmand AI also links Dr. Williams to 1 medical group.
What is Dr. Alexander Thomas Williams' office phone number?
The practice phone on file for Dr. Williams is (469) 742-2200.
What is Dr. Alexander Thomas Williams' medical license number?
Dr. Williams holds Texas license S9626, one of the licenses on file in 2 states.
Which states has Dr. Alexander Thomas Williams been licensed in?
Dmand AI has state licenses on file for Dr. Williams in Texas (2021 to 2026) and Florida.
Which hospitals is Dr. Alexander Thomas Williams affiliated with?
Dr. Williams practices at Baylor Scott & White Medical Center - McKinney in Mckinney, Texas. Dr. Williams is also affiliated with Sherman Medical Center.
What medical group is Dr. Alexander Thomas Williams part of?
Dr. Williams is linked to Baylor Scott & White Health. Dmand AI links Dr. Williams to 1 more medical group.
Does Dr. Alexander Thomas Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 859 services in 2024, and Dr. Williams accepts Medicare assignment.
What is Dr. Alexander Thomas Williams' MIPS score?
Dr. Williams' MIPS final score for performance year 2024 is 99 out of 100, reported as part of a group.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Alexander Thomas Williams see?
CMS counts 544 Medicare patients who saw Dr. Williams in 2024, with an average age of 76.
Is Dr. Alexander Thomas Williams board certified?
Yes. Dr. Williams is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Alexander Thomas Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Where did Dr. Alexander Thomas Williams go to medical school?
Dr. Williams graduated from Texas Tech University Health Sciences Center School of Medicine in 2018.
What drugs does Dr. Alexander Thomas Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Ondansetron ODT, Cefdinir and Hydrocodone-Acetaminophen.
How long has Dr. Alexander Thomas Williams been practicing?
Dr. Williams graduated from medical school in 2018, 8 years ago.
What insurance does Dr. Alexander Thomas Williams accept?
Dr. Williams is in network with 16 carriers, including Aetna, Elevance and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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