Dr. Sigrid Gardner Williams, MD
- Medicare patients, 2024
- 20
- Part D claims, 2024
- 63
- Industry payments
- $358
- Affiliated sites
- 3
- Medical groups
- 2
- Practice address
- 6261 North La Cholla Blvd, Tucson, AZ 85741
- Practice phone
- Call (520) 795-0771
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Genesis OB/GYN La Cholla
Mammography / Breast Imaging Center · Tucson, Arizona
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. Sigrid Gardner Williams is an OB-GYN in Tucson, Arizona
Dr. Williams practices at Genesis OB/GYN La Cholla in Tucson, Arizona.
Dr. Williams' NPI, 1033485511, was assigned on March 28, 2012. Dr. Williams graduated from University of Arizona College of Medicine in 2012. Dr. Williams holds Arizona license 57253.
- NPI
- 1033485511NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406136605
- NPI enumeration date
- March 28, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (520) 795-0771
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sigrid Gardner Williams practices at Genesis OB/GYN La Cholla in Tucson, Arizona
Dr. Williams' primary practice is Genesis OB/GYN La Cholla, at 6261 North La Cholla Blvd, Tucson, AZ 85741. The practice phone is (520) 795-0771.
- Genesis OB/GYN La Cholla6261 North La Cholla Blvd, Tucson, AZ 85741Phone(520) 795-0771
Source: Dmand AI Affiliation Data
Dr. Sigrid Gardner Williams is affiliated with 3 sites of care and 2 medical groups
Dr. Williams' primary practice is Genesis OB/GYN La Cholla in Tucson, Arizona. The medical group on file is Genesis OBGYN. Dmand AI also links Dr. Williams to 2 more group practices and clinics and 1 medical group, each named with a free account. Dr. Williams' employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sigrid Gardner Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Genesis OB/GYN La Cholla | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sigrid Gardner Williams is one of 654 OB-GYNs in Arizona
Obstetrics and gynecology is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Williams is licensed in Arizona.
Specialties and state licenses
- Obstetrics and gynecology, ArizonaPrimary
OB-GYNs near Dr. Williams
Counts of OB-GYNs 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. Sigrid Gardner Williams treated 20 Medicare patients in 2024, average age 72
CMS counts 20 Medicare patients who saw Dr. Williams in 2024. 75% of them have high cholesterol, and 60% have high blood pressure. Their average risk score is 0.64, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 31, with 97% women.
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High cholesterol75%
- High blood pressure60%
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 31
Patient panel by sex, all payers
- Women97%
- Men2%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sigrid Gardner Williams wrote 63 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 63 Medicare Part D claims for 30 patients. 97% of them were for generic drugs. CMS names the drug for 28 of them, across 2 drugs with 11 or more claims each, at $1,378 in total drug cost. In 2023, CMS named 11 claims across 1 drug.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic61 claims97%
- Brand-name and other2 claims3%
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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 112024: 28155%
Drugs named by CMS: 2 in 2024, 1 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
How Dr. Sigrid Gardner Williams takes part in Medicare
Dr. Williams 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)
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Dr. Sigrid Gardner Williams received $358 in industry payments from 2023 to 2025
CMS Open Payments shows 18 general payments to Dr. Williams from 11 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Astellas Pharma US Inc paid the most, $71.
General payments to Dr. Williams by program year, 2023 to 2025
Companies that paid Dr. Williams the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sigrid Gardner Williams graduated from University of Arizona College of Medicine
Dr. Williams graduated from University of Arizona College of Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Sigrid Gardner 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 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Sigrid Gardner 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. Sigrid Gardner Williams' NPI number?
Dr. Sigrid Gardner Williams' NPI number is 1033485511. It was assigned on March 28, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Sigrid Gardner Williams?
Dr. Sigrid Gardner Williams is an OB-GYN in Tucson, Arizona. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Sigrid Gardner Williams practice?
Dr. Williams practices at 6261 North La Cholla Blvd, Tucson, AZ 85741. Dr. Williams' primary practice is Genesis OB/GYN La Cholla in Tucson, Arizona. Dmand AI also links Dr. Williams to 2 group practices and clinics and 1 medical group.
What is Dr. Sigrid Gardner Williams' office phone number?
The practice phone on file for Dr. Williams is (520) 795-0771.
What is Dr. Sigrid Gardner Williams' medical license number?
Dr. Williams holds Arizona license 57253.
What medical group is Dr. Sigrid Gardner Williams part of?
Dr. Williams is linked to Genesis OBGYN. Dmand AI links Dr. Williams to 1 more medical group.
Does Dr. Sigrid Gardner Williams accept Medicare?
Yes. CMS lists Dr. Williams as accepting Medicare assignment.
How many Medicare patients does Dr. Sigrid Gardner Williams see?
CMS counts 20 Medicare patients who saw Dr. Williams in 2024, with an average age of 72.
Where did Dr. Sigrid Gardner Williams go to medical school?
Dr. Williams graduated from University of Arizona College of Medicine in 2012.
What drugs does Dr. Sigrid Gardner Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Estradiol and Clobetasol Propionate.
Has Dr. Sigrid Gardner Williams received payments from drug or device companies?
CMS Open Payments shows $358 in general payments to Dr. Williams from 11 companies from 2023 to 2025. The largest total came from Astellas Pharma US Inc.
How long has Dr. Sigrid Gardner Williams been practicing?
Dr. Williams graduated from medical school in 2012, 14 years ago.
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