Dr. Mark Williams, MD
- Part D claims, 2024
- 15
- Publications
- 11
- Industry payments
- $426
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 79 Middleville Rd, Northport, NY 11768-2200
- Practice phone
- Call (631) 261-4400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
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. Mark Williams is an emergency medicine physician in Northport, New York
Dr. Williams practices in Northport, New York.
Dr. Williams' NPI, 1275645806, was assigned on August 31, 2006. Dr. Williams holds New York license 178086.
- NPI
- 1275645806NPI Registry (opens in a new tab)
- NPI enumeration date
- August 31, 2006
- NPI status
- Active
- Practice phone
- (631) 261-4400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Mark Williams' practice address is in Northport, New York
Dr. Williams' practice address in the NPI Registry is 79 Middleville Rd, Northport, NY 11768-2200. The practice phone is (631) 261-4400.
- NPI Registry address79 Middleville Rd, Northport, NY 11768-2200Phone(631) 261-4400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Mark Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Williams' practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Williams is one of 3,709 emergency medicine physicians in New York
Emergency medicine is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Williams is licensed in New York.
Specialties and state licenses
- Emergency medicine, New YorkPrimary
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. Mark Williams' patients have a median age of 63
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 63, with 100% 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 63
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Mark Williams wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 15 Medicare Part D claims. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Mark Williams has 11 publications on record
Dmand AI links 11 papers to Dr. Williams, published from 2013 to 2024. 2014 was the busiest year, with 3. The most frequent topics are Anesthesia, Hypnotics and Sedatives and Conscious Sedation. Dr. Williams has published most often in Anesth Analg. Dr. Williams' most frequent co-authors are Douglas W. Carlson, MD, Joseph Peter Cravero, MD and Jenifer R. Lightdale, MD.
Dr. Williams' papers by year, 2013 to 2024
Topics Dr. Williams writes about most
- Anesthesia
- Hypnotics and Sedatives
- Conscious Sedation
- Endpoint Determination
- Research Design
- Analgesics
- Patient Safety
- Patient Satisfaction
Dr. Williams' most frequent co-authors
- Douglas W. Carlson, MD3 shared papers
- Joseph Peter Cravero, MD3 shared papers
- Jenifer R. Lightdale, MD3 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. Mark Williams received $426 in industry payments from 2016 to 2018
CMS Open Payments shows 2 general payments to Dr. Williams from 2 drug and device companies from 2016 to 2018. Education make up the largest share, 78% of the total. NeuroLogica Corporation, a subsidiary of Samsung Electronics Co., Ltd. paid the most, $332.
General payments to Dr. Williams by program year, 2016 to 2018
General payments to Dr. Williams by kind, 2016 to 2018
- Education$33278%
- Food and beverage$9422%
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
Sources for Dr. Mark 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 |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Mark 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. Mark Williams' NPI number?
Dr. Mark Williams' NPI number is 1275645806. It was assigned on August 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Williams?
Dr. Mark Williams is an emergency medicine physician in Northport, New York. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark Williams practice?
Dr. Williams practices at 79 Middleville Rd, Northport, NY 11768-2200.
What is Dr. Mark Williams' office phone number?
The practice phone on file for Dr. Williams is (631) 261-4400.
What is Dr. Mark Williams' medical license number?
Dr. Williams holds New York license 178086.
Has Dr. Mark Williams received payments from drug or device companies?
CMS Open Payments shows $426 in general payments to Dr. Williams from 2 companies from 2016 to 2018. The largest total came from NeuroLogica Corporation, a subsidiary of Samsung Electronics Co., Ltd.
How long has Dr. Mark Williams been practicing?
Dr. Williams' NPI was assigned in 2006.
Does Dr. Mark Williams do research?
Dmand AI links 11 publications to Dr. Williams, published from 2013 to 2024.
Who does Dr. Mark Williams publish with?
Dr. Williams' most frequent co-authors are Douglas W. Carlson, MD (3 shared papers), Joseph Peter Cravero, MD (3 shared papers) and Jenifer R. Lightdale, MD (3 shared papers).
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