Dr. Freager Sinclair Williams, MD
- Medicare services, 2023
- 11
- Medicare patients, 2024
- 35
- Part D claims, 2024
- 42
- Hospital affiliations
- 1
- Industry payments
- $1,337
- Practice address
- 2160 S 1st Avenue, Maywood, IL 60153
- Practice phone
- Call (708) 216-3299
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Loyola Medicine Pediatric Mobile Health Unit
Mobile Lab · Maywood, Illinois
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. Freager Sinclair Williams is an OB-GYN in Maywood, Illinois
Dr. Williams practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois.
Dr. Williams' NPI, 1528103207, was assigned on February 21, 2007. Dr. Williams graduated from New York University Medical College - Nlg in 1996. Dr. Williams holds Illinois license 036-107930.
- NPI
- 1528103207NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678645348
- NPI enumeration date
- February 21, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 216-3299
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Freager Sinclair Williams practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois
Dr. Williams' primary practice is Loyola Medicine Pediatric Mobile Health Unit, at 2160 S 1st Avenue, Maywood, IL 60153. The practice phone is (708) 216-3299.
- Loyola Medicine Pediatric Mobile Health Unit2160 S 1st Avenue, Maywood, IL 60153Phone(708) 216-3299
Source: Dmand AI Affiliation Data
Dr. Freager Sinclair Williams is affiliated with 3 sites of care and 1 medical group
Dr. Williams' primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois. Dr. Williams is also affiliated with Loyola University Medical Center. The medical group on file is Loyola University Medical Center. Dmand AI also links Dr. Williams to 1 more group practice or clinic, named with a free account. Dr. Williams' employer is on file too: a clinical lab.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Freager Sinclair 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 |
|---|---|
| Loyola Medicine Pediatric Mobile Health Unit | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Freager Sinclair Williams is one of 1,665 OB-GYNs in Illinois
Obstetrics and gynecology is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Williams is licensed in Illinois.
Specialties and state licenses
- Obstetrics and gynecology, IllinoisPrimary
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. Freager Sinclair Williams billed Medicare for 11 services in 2023
CMS data shows 11 Medicare services from Dr. Williams across 1 procedure code in 2023, for 35 Medicare patients. Medicare paid $329 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Williams' Medicare services by type, 2021 to 2023
- 2021
- 2023
- Other services
- 2021: 182023: 1139%
Dr. Williams compared with the Illinois median for OB-GYNs, 2023
- Dr. Williams
- Illinois median
- Medicare services
- 11vs 4877% below
- Medicare patients
- 35vs 4420% below
- Part D claims
- 11vs 2861% below
Medians across 1,360 OB-GYNs in Illinois with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2023
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. Williams and other OB-GYNs in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Freager Sinclair Williams treated 35 Medicare patients in 2024, average age 60
CMS counts 35 Medicare patients who saw Dr. Williams in 2024. The largest group is under 65, with 16 patients. 74% of them have high blood pressure, and 66% have high cholesterol. 54% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 41, with 99% women.
Dr. Williams' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High blood pressure74%
- High cholesterol66%
- Arthritis57%
- Anxiety43%
- Mood disorders34%
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 41
Patient panel by sex, all payers
- Women99%
- Men1%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Freager Sinclair Williams wrote 42 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 42 Medicare Part D claims for 15 patients. 67% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $21 in total drug cost. In 2018, CMS named 12 claims across 1 drug.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic28 claims67%
- Brand-name14 claims33%
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, 2018 to 2024
- 2018
- 2024
- Claims for drugs CMS names
- 2018: 122024: 118%
Drugs named by CMS: 1 in 2024, 1 in 2018.
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. Freager Sinclair Williams takes part in Medicare
Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal of the uterus: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Freager Sinclair Williams received $1,337 in industry payments from 2018 to 2023
CMS Open Payments shows 12 general payments to Dr. Williams from 5 drug and device companies from 2018 to 2023. Travel and lodging make up the largest share, 69% of the total. Hologic Inc paid the most, $1,077.
General payments to Dr. Williams by program year, 2018 to 2023
General payments to Dr. Williams by kind, 2018 to 2023
- Travel and lodging$92469%
- Food and beverage$40931%
- Education$40%
Companies that paid Dr. Williams the most, 2018 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Freager Sinclair Williams graduated from New York University Medical College - Nlg
Dr. Williams graduated from New York University Medical College - Nlg in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Freager Sinclair 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)Doctors and Clinicians Utilization Data (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. Freager Sinclair 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. Freager Sinclair Williams' NPI number?
Dr. Freager Sinclair Williams' NPI number is 1528103207. It was assigned on February 21, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Freager Sinclair Williams?
Dr. Freager Sinclair Williams is an OB-GYN in Maywood, Illinois. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Freager Sinclair Williams practice?
Dr. Williams practices at 2160 S 1st Avenue, Maywood, IL 60153. Dr. Williams' primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois. Dmand AI also links Dr. Williams to 1 group practice or clinic.
What is Dr. Freager Sinclair Williams' office phone number?
The practice phone on file for Dr. Williams is (708) 216-3299.
What is Dr. Freager Sinclair Williams' medical license number?
Dr. Williams holds Illinois license 036-107930.
Which hospitals is Dr. Freager Sinclair Williams affiliated with?
Dr. Williams is affiliated with Loyola University Medical Center.
What medical group is Dr. Freager Sinclair Williams part of?
Dr. Williams is linked to Loyola University Medical Center.
Does Dr. Freager Sinclair Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 11 services in 2023, and Dr. Williams accepts Medicare assignment.
How many Medicare patients does Dr. Freager Sinclair Williams see?
CMS counts 35 Medicare patients who saw Dr. Williams in 2024, with an average age of 60.
What services does Dr. Freager Sinclair Williams bill to Medicare?
In 2023, Dr. Williams' most billed Medicare services were medicare service (G0101).
Show 4 more questionsShow fewer questions
Where did Dr. Freager Sinclair Williams go to medical school?
Dr. Williams graduated from New York University Medical College - Nlg in 1996.
What drugs does Dr. Freager Sinclair Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Medroxyprogesterone Acetate.
Has Dr. Freager Sinclair Williams received payments from drug or device companies?
CMS Open Payments shows $1,337 in general payments to Dr. Williams from 5 companies from 2018 to 2023. The largest total came from Hologic Inc.
How long has Dr. Freager Sinclair Williams been practicing?
Dr. Williams graduated from medical school in 1996, 30 years ago.
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