Dr. Sarah Roberts Williams, MD
- Medicare services, 2024
- 85
- Medicare patients, 2024
- 93
- Publications
- 31
- MIPS score, 2024
- 89
- Hospital affiliations
- 2
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Williams' 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. Sarah Roberts Williams is an emergency medicine physician in Stanford, California
Dr. Williams practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Williams' NPI, 1366476640, was assigned on July 10, 2006. Dr. Williams graduated from Stanford University School Of Medicine in 1997. Dr. Williams holds California license A66325.
- NPI
- 1366476640NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153482898
- NPI enumeration date
- July 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sarah Roberts Williams practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Williams' primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. Sarah Roberts Williams is affiliated with 2 sites of care and 2 medical groups
Dr. Williams' primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Williams to 1 more hospital and 1 medical group, each named with a free account. Dr. Williams' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sarah Roberts 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 |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | 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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Dr. Sarah Roberts Williams is one of 7,423 emergency medicine physicians in California
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. Dr. Williams is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
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. Sarah Roberts Williams billed Medicare for 85 services in 2024
CMS data shows 85 Medicare services from Dr. Williams across 2 procedure codes in 2024, for 93 Medicare patients. Medicare paid $10,716 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: 482024: 7148%
- Tests and treatments
- 2023: 02024: 14
Dr. Williams compared with the California median for emergency medicine physicians, 2024
- Dr. Williams
- California median
- Medicare services
- 85vs 26568% below
- Medicare patients
- 93vs 24362% below
Medians across 7,079 emergency medicine physicians in California 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.
Need commercial claims for Dr. Williams?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sarah Roberts Williams treated 93 Medicare patients in 2024, average age 77
CMS counts 93 Medicare patients who saw Dr. Williams in 2024. The largest group is 75 to 84, with 38 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 33% are also on Medicaid. Their average risk score is 2.50, 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 32, with 49% women.
Dr. Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Williams' Medicare patients by sex, 2024
- Women3942%
- Men5458%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease43%
- Arthritis42%
- Heart failure41%
- Diabetes35%
- Chronic kidney disease30%
- Osteoporosis30%
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 32
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sarah Roberts Williams scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 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
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 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. Sarah Roberts Williams has 31 publications on record
Dmand AI links 31 papers to Dr. Williams, published from 2011 to 2025. 2015 was the busiest year, with 3. The most frequent topics are Emergency Medicine, Ultrasonography and Clinical Competence. Dr. Williams has published most often in West J Emerg Med. Dr. Williams' most frequent co-authors are Laleh Gharahbaghian, MD, Michael Albert Gisondi, MD and Ashley C. Rider, MD.
Dr. Williams' papers by year, 2015 to 2025
Topics Dr. Williams writes about most
- Emergency Medicine
- Ultrasonography
- Clinical Competence
- Emergency Service, Hospital
- Internship and Residency
- Altitude Sickness
- Point-of-Care Systems
- Abdominal Injuries
Dr. Williams' most frequent co-authors
- Laleh Gharahbaghian, MD7 shared papers
- Michael Albert Gisondi, MD4 shared papers
- Ashley C. Rider, MD4 shared papers
Recent publications by Dr. Williams
See who Dr. Williams researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williams works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Sarah Roberts Williams has 1 award and honors on record
Dmand AI lists 1 award for Dr. Williams. Dr. Williams serves on Committees.
Awards and honors for Dr. Williams
- Undated
- Awards
Source: Dmand AI Professional Profile Data
Dr. Sarah Roberts Williams graduated from Stanford University School Of Medicine
Dr. Williams graduated from Stanford University School Of Medicine in 1997. Dr. Williams is a member of ACEP.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Sarah Roberts Williams accepts plans from 3 insurance carriers
Dr. Williams is in network with 3 carriers, including AK State Medicaid, CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
- AK State Medicaid
- CMS Medicare
- NV State Medicaid
Plan types Dr. Williams accepts, by number of carriers
- Medicaid2
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sarah Roberts 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) |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Sarah Roberts 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. Sarah Roberts Williams' NPI number?
Dr. Sarah Roberts Williams' NPI number is 1366476640. It was assigned on July 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Sarah Roberts Williams?
Dr. Sarah Roberts Williams is an emergency medicine physician in Stanford, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Sarah Roberts Williams practice?
Dr. Williams practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Williams' primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Williams to 1 hospital and 1 medical group.
What is Dr. Sarah Roberts Williams' office phone number?
The practice phone on file for Dr. Williams is (650) 723-4000.
What is Dr. Sarah Roberts Williams' medical license number?
Dr. Williams holds California license A66325.
Which hospitals is Dr. Sarah Roberts Williams affiliated with?
Dr. Williams practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Williams to 1 more hospital.
What medical group is Dr. Sarah Roberts Williams part of?
Dr. Williams is linked to Stanford Health Care. Dmand AI links Dr. Williams to 1 more medical group.
Does Dr. Sarah Roberts Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 85 services in 2024, and Dr. Williams accepts Medicare assignment.
What is Dr. Sarah Roberts Williams' MIPS score?
Dr. Williams' MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Sarah Roberts Williams see?
CMS counts 93 Medicare patients who saw Dr. Williams in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
Is Dr. Sarah Roberts Williams board certified?
Yes. Dr. Williams is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Sarah Roberts Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were emergency department visit (99285) and heart test or procedure (93308).
Where did Dr. Sarah Roberts Williams go to medical school?
Dr. Williams graduated from Stanford University School Of Medicine in 1997.
How long has Dr. Sarah Roberts Williams been practicing?
Dr. Williams graduated from medical school in 1997, 29 years ago.
Does Dr. Sarah Roberts Williams do research?
Dmand AI links 31 publications to Dr. Williams, published from 2011 to 2025.
Who does Dr. Sarah Roberts Williams publish with?
Dr. Williams' most frequent co-authors are Laleh Gharahbaghian, MD (7 shared papers), Michael Albert Gisondi, MD (4 shared papers) and Ashley C. Rider, MD (4 shared papers).
What insurance does Dr. Sarah Roberts Williams accept?
Dr. Williams is in network with 3 carriers, including AK State Medicaid, CMS Medicare and NV State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
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