$12,495 in research paymentsIschemic StrokeStrokeDS-1040b
Dr. Stephan Anthony Mayer, MD
NPI1538258538PAC ID3971797374
- Medicare services, 2024
- 326
- Medicare patients, 2024
- 142
- Clinical trials
- 1
- MIPS score, 2024
- 75
- Hospital affiliations
- 1
- Practice address
- 100 Woods Rd, Valhalla, NY 10595
- Practice phone
- Call (914) 493-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Stephan Anthony Mayer is a neurocritical care physician in Valhalla, New York
Dr. Mayer practices at Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network.
Dr. Mayer's NPI, 1538258538, was assigned on October 11, 2006. Dr. Mayer graduated from JS Weill Medical College, Cornell University in 1988. Dr. Mayer holds New York license 182231.
NPI and contact details
- NPI
- 1538258538NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971797374
- NPI enumeration date
- October 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (914) 493-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 64
- Medical school graduation
- 1988
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephan Anthony Mayer practices at Westchester Medical Center in Valhalla, New York
Dr. Mayer's primary practice is Westchester Medical Center, at 100 Woods Rd, Valhalla, NY 10595 in Westchester County. The practice phone is (914) 493-7000.
- Westchester Medical Center100 Woods Rd, Valhalla, NY 10595 · Westchester CountyPhone(914) 493-7000
Source: Dmand AI Affiliation Data
Dr. Stephan Anthony Mayer is affiliated with 1 site of care and 1 medical group
Dr. Mayer's primary practice is Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network. The medical group on file is Westchester Medical Center Advanced Physician Services.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephan Anthony Mayer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mayer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Westchester Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Stephan Anthony Mayer is one of 45 neurocritical care physicians in New York
Neurocritical care is Dr. Mayer's primary specialty in the NPI Registry, under taxonomy code 2084A2900X. Dr. Mayer is licensed in New York.
Specialties and state licenses
- Neurocritical care, New YorkPrimary
Neurocritical care physicians near Dr. Mayer
Counts of neurocritical care 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. Stephan Anthony Mayer billed Medicare for 326 services in 2024
CMS data shows 326 Medicare services from Dr. Mayer across 3 procedure codes in 2024, for 142 Medicare patients. Medicare paid $52,459 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024326
Medicare patients142
Paid by Medicare$52,459
Procedure codes3
Dr. Mayer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3612024: 32610%
Dr. Mayer compared with the New York median for neurocritical care physicians, 2024
- Dr. Mayer
- New York median
- Medicare services
- 326vs 26523% above
- Medicare patients
- 142vs 9254% above
Medians across 44 neurocritical care physicians in New York with Dmand AI profiles that report each measure.
Dr. Mayer's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mayer and other neurocritical care physicians in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephan Anthony Mayer treated 142 Medicare patients in 2024, average age 75
CMS counts 142 Medicare patients who saw Dr. Mayer in 2024. The largest group is 75 to 84, with 55 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 1.94, 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. Mayer's median patient age at 66, with 55% women.
Medicare patients, 2024142
Average age75
Average risk score1.94
Also on Medicaid32%
Dr. Mayer's Medicare patients by age, 2024
Dr. Mayer's Medicare patients by sex, 2024
- Women8560%
- Men5740%
Chronic conditions among Dr. Mayer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Stroke or TIA75%
- Arthritis58%
- Diabetes48%
- Ischemic heart disease48%
- Atrial fibrillation43%
- Anxiety42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mayer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephan Anthony Mayer scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Mayer for performance year 2024, reported as part of a group. Dr. Mayer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
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. Stephan Anthony Mayer has worked on 1 clinical trial
Dmand AI links Dr. Mayer to 1 clinical trial. Conditions studied include Ischemic Stroke and Stroke. Open Payments lists research payments to Dr. Mayer that name 1 trial.
Conditions in Dr. Mayer's trials
- Ischemic Stroke
- Stroke
Investigators on the most trials with Dr. Mayer
- Wayne Marston Clark, MD1 shared trial
- Thomas G. Devlin, MD, PhD1 shared trial
- Carmelo Graffagnino, MD1 shared trial
Recent clinical trials with Dr. Mayer
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephan Anthony Mayer received $139,522 in industry payments from 2016 to 2025
CMS Open Payments shows 175 general payments to Dr. Mayer from 29 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 65% of the total. AstraZeneca Pharmaceuticals LP paid the most, $30,101. It also lists 10 research payments totaling $39,924 from 2016 to 2023, naming 1 clinical trial.
General payments to Dr. Mayer by program year, 2016 to 2025
General payments to Dr. Mayer by kind, 2016 to 2025
$139.5Kin total
- Consulting fees$91,01165%
- Travel and lodging$30,94422%
- Speaker and faculty fees$8,5256%
- Food and beverage$5,4394%
- Other$3,6033%
Companies that paid Dr. Mayer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephan Anthony Mayer graduated from JS Weill Medical College, Cornell University
Dr. Mayer graduated from JS Weill Medical College, Cornell University in 1988.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephan Anthony Mayer'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) |
| 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. Stephan Anthony Mayer
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. Stephan Anthony Mayer's NPI number?
Dr. Stephan Anthony Mayer's NPI number is 1538258538. It was assigned on October 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephan Anthony Mayer?
Dr. Stephan Anthony Mayer is a neurocritical care physician in Valhalla, New York. The primary specialty in the NPI Registry is Neurocritical Care Physician (taxonomy code 2084A2900X).
Where does Dr. Stephan Anthony Mayer practice?
Dr. Mayer practices at 100 Woods Rd, Valhalla, NY 10595. Dr. Mayer's primary practice is Westchester Medical Center in Valhalla, New York, part of Westchester Medical Center Health Network.
What is Dr. Stephan Anthony Mayer's office phone number?
The practice phone on file for Dr. Mayer is (914) 493-7000.
What is Dr. Stephan Anthony Mayer's medical license number?
Dr. Mayer holds New York license 182231.
Which hospitals is Dr. Stephan Anthony Mayer affiliated with?
Dr. Mayer practices at Westchester Medical Center in Valhalla, New York.
What medical group is Dr. Stephan Anthony Mayer part of?
Dr. Mayer is linked to Westchester Medical Center Advanced Physician Services.
Does Dr. Stephan Anthony Mayer accept Medicare?
Yes. CMS data shows Dr. Mayer billed Medicare for 326 services in 2024, and Dr. Mayer accepts Medicare assignment.
What is Dr. Stephan Anthony Mayer's MIPS score?
Dr. Mayer's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. Stephan Anthony Mayer see?
CMS counts 142 Medicare patients who saw Dr. Mayer in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Stephan Anthony Mayer bill to Medicare?
In 2024, Dr. Mayer's most billed Medicare services were critical care (99291), hospital inpatient care (99232) and critical care (99292).
Where did Dr. Stephan Anthony Mayer go to medical school?
Dr. Mayer graduated from JS Weill Medical College, Cornell University in 1988.
Has Dr. Stephan Anthony Mayer received payments from drug or device companies?
CMS Open Payments shows $139,522 in general payments to Dr. Mayer from 29 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Stephan Anthony Mayer been practicing?
Dr. Mayer graduated from medical school in 1988, 38 years ago.
Does Dr. Stephan Anthony Mayer do research?
Dr. Mayer has worked on 1 clinical trial.
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