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Dr. Jonathan Austin Deassis, MD
NPI1689178980
- Medicare services, 2024
- 444
- Medicare patients, 2024
- 300
- Part D claims, 2024
- 26
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 1000 Tenth Avenue, New York, NY 10019
- Practice phone
- Call (212) 523-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Deassis' professional email, personal email and mobile number
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Dr. Jonathan Austin Deassis is an emergency medicine physician in New York, New York
Dr. Deassis practices at Mount Sinai West in New York, New York, part of Mount Sinai Health System.
Dr. Deassis' NPI, 1689178980, was assigned on March 21, 2018. Dr. Deassis graduated from Donald and Barbara Zucker School of Medicine at Hofstra/Northwell in 2018. Dr. Deassis holds New York license 308087.
NPI and contact details
- NPI
- 1689178980NPI Registry (opens in a new tab)
- NPI enumeration date
- March 21, 2018
- NPI status
- Active
- Practice phone
- (212) 523-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jonathan Austin Deassis practices at Mount Sinai West in New York, New York
Dr. Deassis' primary practice is Mount Sinai West, at 1000 Tenth Avenue, New York, NY 10019 in New York County. The practice phone is (212) 523-4000.
- Mount Sinai West1000 Tenth Avenue, New York, NY 10019 · New York CountyPhone(212) 523-4000
Source: Dmand AI Affiliation Data
Dr. Jonathan Austin Deassis is affiliated with 3 sites of care and 3 medical groups
Dr. Deassis' primary practice is Mount Sinai West in New York, New York, part of Mount Sinai Health System. The medical group on file is Mount Sinai Institute for Liver Medicine. Dmand AI also links Dr. Deassis to 2 more group practices and clinics and 2 medical groups, each named with a free account.
Mount Sinai Institute for Liver Medicine2 group practices and clinicsNames with a free account2 medical groupsNames with a free account
See all 6 affiliations for Dr. DeassisSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan Austin Deassis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Deassis practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mount Sinai West | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Mount Sinai Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Jonathan Austin Deassis is one of 3,709 emergency medicine physicians in New York
Emergency medicine is Dr. Deassis' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Deassis is licensed in New York.
Specialties and state licenses
- Emergency medicine, New YorkPrimary
Emergency medicine physicians near Dr. Deassis
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
3,709emergency medicine physicians in New York684emergency medicine physicians in New York76emergency medicine physicians at Mount Sinai West
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonathan Austin Deassis billed Medicare for 444 services in 2024
CMS data shows 444 Medicare services from Dr. Deassis across 5 procedure codes in 2024, for 300 Medicare patients. Medicare paid $40,584 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024444
Medicare patients300
Paid by Medicare$40,584
Procedure codes5
Dr. Deassis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2582024: 29113%
- Tests and treatments
- 2023: 1582024: 1533%
Dr. Deassis compared with the New York median for emergency medicine physicians, 2024
- Dr. Deassis
- New York median
- Medicare services
- 444vs 2192.0 times
- Medicare patients
- 300vs 21639% above
Medians across 3,510 emergency medicine physicians in New York with Dmand AI profiles that report each measure.
Dr. Deassis' 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. Deassis and other emergency medicine physicians in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan Austin Deassis treated 300 Medicare patients in 2024, average age 76
CMS counts 300 Medicare patients who saw Dr. Deassis in 2024. The largest group is 75 to 84, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 47% are also on Medicaid. Their average risk score is 2.17, 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. Deassis' median patient age at 56, with 48% women.
Medicare patients, 2024300
Average age76
Average risk score2.17
Also on Medicaid47%
Dr. Deassis' Medicare patients by age, 2024
Dr. Deassis' Medicare patients by sex, 2024
- Women15752%
- Men14348%
Chronic conditions among Dr. Deassis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Ischemic heart disease42%
- Diabetes40%
- Mood disorders39%
- Depression33%
- Heart failure33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Deassis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women48%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan Austin Deassis wrote 26 Medicare Part D claims in 2024
In 2024, Dr. Deassis wrote 26 Medicare Part D claims for 23 patients. 96% of them were for generic drugs.
Part D claims, 202426
Part D patients23
Dr. Deassis' Part D claims by kind of drug, 2024
- Generic25 claims96%
- Brand-name and other1 claims4%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Jonathan Austin Deassis has 1 publication on record
Dmand AI links 1 paper to Dr. Deassis in 2019.
Papers1
Recent publications by Dr. Deassis
See who Dr. Deassis researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Deassis 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. Jonathan Austin Deassis graduated from Donald and Barbara Zucker School of Medicine at Hofstra/Northwell
Dr. Deassis graduated from Donald and Barbara Zucker School of Medicine at Hofstra/Northwell in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathan Austin Deassis'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 (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 |
| 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. Jonathan Austin Deassis
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. Jonathan Austin Deassis' NPI number?
Dr. Jonathan Austin Deassis' NPI number is 1689178980. It was assigned on March 21, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Austin Deassis?
Dr. Jonathan Austin Deassis is an emergency medicine physician in New York, New York. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Jonathan Austin Deassis practice?
Dr. Deassis practices at 1000 Tenth Avenue, New York, NY 10019. Dr. Deassis' primary practice is Mount Sinai West in New York, New York, part of Mount Sinai Health System. Dmand AI also links Dr. Deassis to 2 group practices and clinics and 2 medical groups.
What is Dr. Jonathan Austin Deassis' office phone number?
The practice phone on file for Dr. Deassis is (212) 523-4000.
What is Dr. Jonathan Austin Deassis' medical license number?
Dr. Deassis holds New York license 308087.
Which hospitals is Dr. Jonathan Austin Deassis affiliated with?
Dr. Deassis practices at Mount Sinai West in New York, New York.
What medical group is Dr. Jonathan Austin Deassis part of?
Dr. Deassis is linked to Mount Sinai Institute for Liver Medicine. Dmand AI links Dr. Deassis to 2 more medical groups.
Does Dr. Jonathan Austin Deassis accept Medicare?
Yes. CMS data shows Dr. Deassis billed Medicare for 444 services in 2024.
How many Medicare patients does Dr. Jonathan Austin Deassis see?
CMS counts 300 Medicare patients who saw Dr. Deassis in 2024, with an average age of 76.
What services does Dr. Jonathan Austin Deassis bill to Medicare?
In 2024, Dr. Deassis' most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Show 3 more questionsShow fewer questions
Where did Dr. Jonathan Austin Deassis go to medical school?
Dr. Deassis graduated from Donald and Barbara Zucker School of Medicine at Hofstra/Northwell in 2018.
How long has Dr. Jonathan Austin Deassis been practicing?
Dr. Deassis graduated from medical school in 2018, 8 years ago.
Does Dr. Jonathan Austin Deassis do research?
Dmand AI links 1 publication to Dr. Deassis.
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