AnesthesiologistsOccupational DiseasesOccupational Exposure
Marc Sherwin
NPI1023435476PAC ID3375898158
- Medicare services, 2024
- 38
- Medicare patients, 2024
- 80
- Publications
- 8
- Hospital affiliations
- 2
- Industry payments
- $1,057
- Practice address
- 20 York Street, New Haven, CT 06510
- Practice phone
- Call (203) 688-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Yale New Haven Psychiatric Hospital (York St)
Psychiatric Inpatient Facility · New Haven, Connecticut
Find Marc Sherwin's professional email, personal email and mobile number
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Marc Sherwin is an anesthesiologist in New Haven, Connecticut
Marc Sherwin practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.
Marc Sherwin's NPI, 1023435476, was assigned on March 24, 2014. Marc Sherwin graduated from University of Miami Leonard M. Miller School of Medicine in 2014. Marc Sherwin holds New York license 291705.
NPI and contact details
- NPI
- 1023435476NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375898158
- NPI enumeration date
- March 24, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 688-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Marc Sherwin practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut
Marc Sherwin's primary practice is Yale New Haven Psychiatric Hospital (York St), at 20 York Street, New Haven, CT 06510. The practice phone is (203) 688-5900.
- Yale New Haven Psychiatric Hospital (York St)20 York Street, New Haven, CT 06510Phone(203) 688-5900
Source: Dmand AI Affiliation Data
Marc Sherwin is affiliated with 3 sites of care and 2 medical groups
Marc Sherwin's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Marc Sherwin is also affiliated with Yale New Haven Hospital. The medical group on file is Yale Health. Dmand AI also links Marc Sherwin to 1 more hospital and 1 medical group, each named with a free account.
Yale New Haven Psychiatric Hospital (York St)Primary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marc Sherwin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marc Sherwin practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Yale New Haven Psychiatric Hospital (York St) | 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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Marc Sherwin is one of 654 anesthesiologists in Connecticut
Anesthesiology is Marc Sherwin's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Marc Sherwin is board certified in anesthesiology by the American Board of Anesthesiology. Marc Sherwin is licensed in New York.
Specialties and state licenses
- Anesthesiology, New YorkPrimary
Anesthesiologists near Marc Sherwin
Counts of anesthesiologists 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
Marc Sherwin billed Medicare for 38 services in 2024
CMS data shows 38 Medicare services from Marc Sherwin across 3 procedure codes in 2024, for 80 Medicare patients. Medicare paid $5,320 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202438
Medicare patients80
Paid by Medicare$5,320
Procedure codes3
Marc Sherwin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 332024: 2621%
- Anesthesia
- 2023: 242024: 1250%
Marc Sherwin compared with the Connecticut median for anesthesiologists, 2024
- Marc Sherwin
- Connecticut median
- Medicare services
- 38vs 8957% below
- Medicare patients
- 80vs 16050% below
Medians across 636 anesthesiologists in Connecticut with Dmand AI profiles that report each measure.
Marc Sherwin'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.
Need commercial claims for Marc Sherwin?
Medicare shows one payer. Book a meeting to get commercial claims data for Marc Sherwin and other anesthesiologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Marc Sherwin treated 80 Medicare patients in 2024, average age 72
CMS counts 80 Medicare patients who saw Marc Sherwin in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 36% are also on Medicaid. Their average risk score is 3.31, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Marc Sherwin's median patient age at 52, with 62% women.
Medicare patients, 202480
Average age72
Average risk score3.31
Also on Medicaid36%
Marc Sherwin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Marc Sherwin's Medicare patients by sex, 2024
- Women3544%
- Men4556%
Chronic conditions among Marc Sherwin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Diabetes50%
- Ischemic heart disease50%
- Chronic kidney disease41%
- Heart failure38%
- Mood disorders31%
Share of Medicare patients with each condition. A patient can have several.
Marc Sherwin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women62%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Marc Sherwin takes part in Medicare
Marc Sherwin 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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Marc Sherwin has 8 publications on record
Dmand AI links 8 papers to Marc Sherwin, published from 2021 to 2025. 2025 was the busiest year, with 2. The most frequent topics are Anesthesiology, Anesthesiologists and Clinical Competence. Marc Sherwin has published most often in Int Anesthesiol Clin. Marc Sherwin's most frequent co-authors are Celia M. Divino, MD, Max Moses Feinstein, MD and Garrett Wade Burnett.
Papers8
Years published2021 to 2025
Marc Sherwin's papers by year, 2021 to 2025
Topics Marc Sherwin writes about most
- Anesthesiology
- Anesthesiologists
- Clinical Competence
- Internship and Residency
- Social Media
Marc Sherwin's most frequent co-authors
- Celia M. Divino, MD2 shared papers
- Max Moses Feinstein, MD2 shared papers
- Garrett Wade Burnett1 shared paper
Recent publications by Marc Sherwin
Abdominal MusclesAnalgesics, OpioidAnesthetics, Local
Diabetes Mellitus, Type 2Glucagon-Like Peptide-1 ReceptorGlucagon-Like Peptide-1 Receptor Agonists
J Clin Anesth
AnesthesiologyInternship and ResidencyPersonnel Selection
J Clin Anesth
AnesthesiologyClinical CompetenceInternship and Residency
See who Marc Sherwin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Marc Sherwin works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Marc Sherwin received $1,057 in industry payments from 2024 to 2025
CMS Open Payments shows 6 general payments to Marc Sherwin from 3 drug and device companies from 2024 to 2025. Consulting fees make up the largest share, 84% of the total. Medtronic, Inc. paid the most, $890.
General payments to Marc Sherwin by program year, 2024 to 2025
General payments to Marc Sherwin by kind, 2024 to 2025
$1.1Kin total
- Consulting fees$89084%
- Food and beverage$16716%
Companies that paid Marc Sherwin the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Marc Sherwin graduated from University of Miami Leonard M. Miller School of Medicine
Marc Sherwin graduated from University of Miami Leonard M. Miller School of Medicine in 2014.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Sources for Marc Sherwin'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) |
| 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) |
| 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 Marc Sherwin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marc Sherwin's NPI number?
Marc Sherwin's NPI number is 1023435476. It was assigned on March 24, 2014, and it is active in the NPI Registry.
What does Marc Sherwin specialize in?
Marc Sherwin is an anesthesiologist in New Haven, Connecticut. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Marc Sherwin practice?
Marc Sherwin practices at 20 York Street, New Haven, CT 06510. Marc Sherwin's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dmand AI also links Marc Sherwin to 1 hospital and 1 medical group.
What is Marc Sherwin's office phone number?
The practice phone on file for Marc Sherwin is (203) 688-5900.
What is Marc Sherwin's medical license number?
Marc Sherwin holds New York license 291705.
Which hospitals is Marc Sherwin affiliated with?
Marc Sherwin is affiliated with Yale New Haven Hospital. Dmand AI links Marc Sherwin to 1 more hospital.
What medical group is Marc Sherwin part of?
Marc Sherwin is linked to Yale Health. Dmand AI links Marc Sherwin to 1 more medical group.
Does Marc Sherwin accept Medicare?
Yes. CMS data shows Marc Sherwin billed Medicare for 38 services in 2024, and Marc Sherwin accepts Medicare assignment.
How many Medicare patients does Marc Sherwin see?
CMS counts 80 Medicare patients who saw Marc Sherwin in 2024, with an average age of 72.
Is Marc Sherwin board certified?
Yes. Marc Sherwin is board certified in anesthesiology by the American Board of Anesthesiology.
Show 6 more questionsShow fewer questions
What services does Marc Sherwin bill to Medicare?
In 2024, Marc Sherwin's most billed Medicare services were surgery: heart and blood vessels (36620), anesthesia (00790) and surgery: brain, spine and nerves (64488).
Where did Marc Sherwin go to medical school?
Marc Sherwin graduated from University of Miami Leonard M. Miller School of Medicine in 2014.
Has Marc Sherwin received payments from drug or device companies?
CMS Open Payments shows $1,057 in general payments to Marc Sherwin from 3 companies from 2024 to 2025. The largest total came from Medtronic, Inc.
How long has Marc Sherwin been practicing?
Marc Sherwin graduated from medical school in 2014, 12 years ago.
Does Marc Sherwin do research?
Dmand AI links 8 publications to Marc Sherwin, published from 2021 to 2025.
Who does Marc Sherwin publish with?
Marc Sherwin's most frequent co-authors are Celia M. Divino, MD (2 shared papers), Max Moses Feinstein, MD (2 shared papers) and Garrett Wade Burnett (1 shared paper).
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