Dr. Sara Fohn McWilliams, MD
- Medicare services, 2024
- 110
- Medicare patients, 2024
- 169
- Hospital affiliations
- 3
- Industry payments
- $179
- Medical groups
- 3
- Practice address
- 7902 Ewing Halsell, San Antonio, TX 78229
- Practice phone
- Call (210) 912-8204
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Legent ASC Medical Center
Surgery Center - Medicare-Certified · San Antonio, Texas
Find Dr. McWilliams' 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. Sara Fohn McWilliams is an anesthesiologist in San Antonio, Texas
Dr. McWilliams practices at Legent ASC Medical Center in San Antonio, Texas.
Dr. McWilliams' NPI, 1114360559, was assigned on April 16, 2013. Dr. McWilliams graduated from UTMB Health in 2013. Dr. McWilliams holds Texas license R1826.
- NPI
- 1114360559NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183997760
- NPI enumeration date
- April 16, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (210) 912-8204
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sara Fohn McWilliams practices at Legent ASC Medical Center in San Antonio, Texas
Dr. McWilliams' primary practice is Legent ASC Medical Center, at 7902 Ewing Halsell, San Antonio, TX 78229. The practice phone is (210) 912-8204.
- Legent ASC Medical Center7902 Ewing Halsell, San Antonio, TX 78229Phone(210) 912-8204
Source: Dmand AI Affiliation Data
Dr. Sara Fohn McWilliams is affiliated with 7 sites of care and 3 medical groups
Dr. McWilliams' primary practice is Legent ASC Medical Center in San Antonio, Texas. Dr. McWilliams is also affiliated with Methodist Hospital. The medical group on file is US Anesthesia Partners. Dmand AI also links Dr. McWilliams to 2 more hospitals, 3 group practices and clinics and 2 medical groups, 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. Sara Fohn McWilliams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. McWilliams practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Legent ASC Medical Center | Available with a free account |
| +6 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Sara Fohn McWilliams is one of 4,073 anesthesiologists in Texas
Anesthesiology is Dr. McWilliams' primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. McWilliams is board certified in anesthesiology by the American Board of Anesthesiology. Dr. McWilliams is licensed in Texas.
Specialties and state licenses
- Anesthesiology, TexasPrimary
Anesthesiologists near Dr. McWilliams
Counts of anesthesiologists 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. Sara Fohn McWilliams billed Medicare for 110 services in 2024
CMS data shows 110 Medicare services from Dr. McWilliams across 7 procedure codes in 2024, for 169 Medicare patients. Medicare paid $13,258 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. McWilliams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 582024: 7428%
- Surgery
- 2023: 182024: 36100%
Dr. McWilliams compared with the Texas median for anesthesiologists, 2024
- Dr. McWilliams
- Texas median
- Medicare services
- 110vs 7155% above
- Medicare patients
- 169vs 13228% above
Medians across 3,710 anesthesiologists in Texas with Dmand AI profiles that report each measure.
Dr. McWilliams' 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. McWilliams?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. McWilliams and other anesthesiologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sara Fohn McWilliams treated 169 Medicare patients in 2024, average age 73
CMS counts 169 Medicare patients who saw Dr. McWilliams in 2024. The largest group is 65 to 74, with 99 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.98, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. McWilliams' median patient age at 59, with 61% women.
Dr. McWilliams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. McWilliams' Medicare patients by sex, 2024
- Women8550%
- Men8450%
Chronic conditions among Dr. McWilliams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease28%
- Diabetes25%
- Anxiety22%
- Cancer20%
- Chronic kidney disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. McWilliams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Sara Fohn McWilliams takes part in Medicare
Dr. McWilliams 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Sara Fohn McWilliams received $179 in industry payments from 2019 to 2021
CMS Open Payments shows 3 general payments to Dr. McWilliams from 1 drug or device company from 2019 to 2021. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $179.
General payments to Dr. McWilliams by program year, 2019 to 2021
Companies that paid Dr. McWilliams the most, 2019 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sara Fohn McWilliams graduated from UTMB Health
Dr. McWilliams graduated from UTMB Health in 2013.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Sara Fohn McWilliams accepts plans from 19 insurance carriers
Dr. McWilliams is in network with 19 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- +11 more carriersWith a free account
Plan types Dr. McWilliams accepts, by number of carriers
- PPO11
- HMO10
- Medicare8
- POS6
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Sara Fohn McWilliams'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) |
| 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. Sara Fohn McWilliams
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. Sara Fohn McWilliams' NPI number?
Dr. Sara Fohn McWilliams' NPI number is 1114360559. It was assigned on April 16, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Sara Fohn McWilliams?
Dr. Sara Fohn McWilliams is an anesthesiologist in San Antonio, Texas. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Sara Fohn McWilliams practice?
Dr. McWilliams practices at 7902 Ewing Halsell, San Antonio, TX 78229. Dr. McWilliams' primary practice is Legent ASC Medical Center in San Antonio, Texas. Dmand AI also links Dr. McWilliams to 2 hospitals, 3 group practices and clinics and 2 medical groups.
What is Dr. Sara Fohn McWilliams' office phone number?
The practice phone on file for Dr. McWilliams is (210) 912-8204.
What is Dr. Sara Fohn McWilliams' medical license number?
Dr. McWilliams holds Texas license R1826.
Which hospitals is Dr. Sara Fohn McWilliams affiliated with?
Dr. McWilliams is affiliated with Methodist Hospital. Dmand AI links Dr. McWilliams to 2 more hospitals.
What medical group is Dr. Sara Fohn McWilliams part of?
Dr. McWilliams is linked to US Anesthesia Partners. Dmand AI links Dr. McWilliams to 2 more medical groups.
Does Dr. Sara Fohn McWilliams accept Medicare?
Yes. CMS data shows Dr. McWilliams billed Medicare for 110 services in 2024, and Dr. McWilliams accepts Medicare assignment.
How many Medicare patients does Dr. Sara Fohn McWilliams see?
CMS counts 169 Medicare patients who saw Dr. McWilliams in 2024, with an average age of 73.
Is Dr. Sara Fohn McWilliams board certified?
Yes. Dr. McWilliams is board certified in anesthesiology by the American Board of Anesthesiology.
Show 5 more questionsShow fewer questions
What services does Dr. Sara Fohn McWilliams bill to Medicare?
In 2024, Dr. McWilliams' most billed Medicare services were anesthesia (00790), surgery: brain, spine and nerves (64415) and surgery: brain, spine and nerves (64447).
Where did Dr. Sara Fohn McWilliams go to medical school?
Dr. McWilliams graduated from UTMB Health in 2013.
Has Dr. Sara Fohn McWilliams received payments from drug or device companies?
CMS Open Payments shows $179 in general payments to Dr. McWilliams from 1 company from 2019 to 2021. The largest total came from Stryker Corporation.
How long has Dr. Sara Fohn McWilliams been practicing?
Dr. McWilliams graduated from medical school in 2013, 13 years ago.
What insurance does Dr. Sara Fohn McWilliams accept?
Dr. McWilliams is in network with 19 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
Selling to anesthesiology practices?
See anesthesiologists in Texas by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card