Dr. Gail S. Williams, MD
- Medicare services, 2021
- 34
- Part D claims, 2024
- 44
- Clinical trials
- 1
- Hospital affiliations
- 1
- Industry payments
- $437
- Practice address
- 622 W 168th St, New York, NY 10032
- Practice phone
- Call (212) 297-4255
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Columbia University Irving Medical Center
New York, New York
Find Dr. Williams' professional email, personal email and mobile number
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Dr. Gail S. Williams is a nephrologist in New York, New York
Dr. Williams practices at Columbia University Irving Medical Center in New York, New York.
Dr. Williams' NPI, 1215964648, was assigned on June 28, 2006. Dr. Williams graduated from Columbia University Vagelos College of Physicians and Surgeons in 1968. Dr. Williams holds New York license 104534.
- NPI
- 1215964648NPI Registry (opens in a new tab)
- NPI enumeration date
- June 28, 2006
- NPI status
- Active
- Practice phone
- (212) 297-4255
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 84
- Medical school graduation
- 1968
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Gail S. Williams practices at Columbia University Irving Medical Center in New York, New York
Dr. Williams' primary practice is Columbia University Irving Medical Center, at 622 W 168th St, New York, NY 10032 in New York County. The practice phone is (212) 297-4255.
- Columbia University Irving Medical Center622 W 168th St, New York, NY 10032 · New York CountyPhone(212) 297-4255
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gail S. Williams is affiliated with 4 sites of care and 2 medical groups
Dr. Williams' primary practice is Columbia University Irving Medical Center in New York, New York. Dr. Williams is also affiliated with NewYork-Presbyterian/Weill Cornell Medical Center. The medical group on file is ColumbiaDoctors. Dmand AI also links Dr. Williams to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gail S. 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 |
|---|---|
| Columbia University Irving Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gail S. Williams is one of 914 nephrologists in New York
Nephrology is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Williams is licensed in New York.
Specialties and state licenses
- Nephrology, New YorkPrimary
Nephrologists near Dr. Williams
Counts of nephrologists 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. Gail S. Williams billed Medicare for 34 services in 2021
CMS data shows 34 Medicare services from Dr. Williams across 2 procedure codes in 2021. Medicare paid $1,591 for them. Every service was in an office.
Dr. Williams' Medicare services by type, 2018 to 2021
- 2018
- 2021
- Other services
- 2018: 02021: 34
- Surgery
- 2018: 2212021: 0100%
- Office and hospital visits
- 2018: 4452021: 0100%
Dr. Williams compared with the New York median for nephrologists, 2021
- Dr. Williams
- New York median
- Medicare services
- 34vs 68995% below
- Part D claims
- 11vs 43697% below
Medians across 892 nephrologists in New York with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2021
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 nephrologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gail S. Williams' patients have a median age of 80
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 80, with 55% women.
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 80
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Gail S. Williams wrote 44 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 44 Medicare Part D claims for 15 patients. 95% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $72 in total drug cost. In 2019, CMS named 59 claims across 4 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic42 claims95%
- Brand-name and other2 claims5%
Dr. Williams' most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 592020: 1181%
Drugs named by CMS: 1 in 2020, 4 in 2019.
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
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Dr. Gail S. Williams has worked on 1 clinical trial
Dmand AI links Dr. Williams to 1 clinical trial.
Investigators on the most trials with Dr. Williams
Recent clinical trials with Dr. Williams
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gail S. Williams received $437 in industry payments from 2016 to 2018
CMS Open Payments shows 20 general payments to Dr. Williams from 5 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $163.
General payments to Dr. Williams by program year, 2016 to 2018
Companies that paid Dr. Williams the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gail S. Williams graduated from Columbia University Vagelos College of Physicians and Surgeons
Dr. Williams graduated from Columbia University Vagelos College of Physicians and Surgeons in 1968.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gail S. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Data |
| 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) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Gail S. Williams
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What is Dr. Gail S. Williams' NPI number?
Dr. Gail S. Williams' NPI number is 1215964648. It was assigned on June 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gail S. Williams?
Dr. Gail S. Williams is a nephrologist in New York, New York. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Gail S. Williams practice?
Dr. Williams practices at 622 W 168th St, New York, NY 10032. Dr. Williams' primary practice is Columbia University Irving Medical Center in New York, New York. Dmand AI also links Dr. Williams to 2 group practices and clinics and 1 medical group.
What is Dr. Gail S. Williams' office phone number?
The practice phone on file for Dr. Williams is (212) 297-4255.
What is Dr. Gail S. Williams' medical license number?
Dr. Williams holds New York license 104534.
Which hospitals is Dr. Gail S. Williams affiliated with?
Dr. Williams is affiliated with NewYork-Presbyterian/Weill Cornell Medical Center.
What medical group is Dr. Gail S. Williams part of?
Dr. Williams is linked to ColumbiaDoctors. Dmand AI links Dr. Williams to 1 more medical group.
Does Dr. Gail S. Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 34 services in 2021.
What services does Dr. Gail S. Williams bill to Medicare?
In 2021, Dr. Williams' most billed Medicare services were medical service (0001A) and medical service (0002A).
Where did Dr. Gail S. Williams go to medical school?
Dr. Williams graduated from Columbia University Vagelos College of Physicians and Surgeons in 1968.
Show 4 more questionsShow fewer questions
What drugs does Dr. Gail S. Williams prescribe most?
In 2020 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Metformin HCl.
Has Dr. Gail S. Williams received payments from drug or device companies?
CMS Open Payments shows $437 in general payments to Dr. Williams from 5 companies from 2016 to 2018. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Gail S. Williams been practicing?
Dr. Williams graduated from medical school in 1968, 58 years ago.
Does Dr. Gail S. Williams do research?
Dr. Williams has worked on 1 clinical trial.
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