Dr. Michael Cassara, DO
- Medicare services, 2022
- 43
- Hospital affiliations
- 1
- Industry payments
- $16
- Medical group
- 1
- State license
- 1
- Practice address
- 888 Old Country Road, Plainview, NY 11803
- Practice phone
- Call (516) 719-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Michael Cassara is an emergency medicine physician in Manhasset, New York
Dr. Cassara practices at Plainview Hospital in Plainview, New York, part of Northwell Health.
Dr. Cassara's NPI, 1447273289, was assigned on July 25, 2006. Dr. Cassara graduated from NYIT College Of Osteopathic Medicine in 1997. Dr. Cassara holds New York license 212341.
- NPI
- 1447273289NPI Registry (opens in a new tab)
- NPI enumeration date
- July 25, 2006
- NPI status
- Active
- Practice phone
- (516) 719-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Cassara practices in Plainview and Manhasset
Dr. Cassara's primary practice is Plainview Hospital, at 888 Old Country Road, Plainview, NY 11803 in Nassau County. The practice phone is (516) 719-3000. The NPI Registry lists Dr. Cassara's practice address as 300 Community Dr, Manhasset, NY 11030.
- Plainview HospitalPrimary888 Old Country Road, Plainview, NY 11803 · Nassau CountyPhone(516) 719-3000
- NPI Registry address300 Community Dr, Manhasset, NY 11030 · Nassau CountyPhone(800) 376-5566
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Michael Cassara is affiliated with 1 site of care and 1 medical group
Dr. Cassara's primary practice is Plainview Hospital in Plainview, New York, part of Northwell Health. The medical group on file is Northwell Health Physician Partners Cardiology at Great Neck.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael Cassara's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cassara practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Plainview Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Cassara is one of 3,709 emergency medicine physicians in New York
Emergency medicine is Dr. Cassara's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Cassara is licensed in New York.
Specialties and state licenses
- Emergency medicine, New YorkPrimary
Emergency medicine physicians near Dr. Cassara
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. Michael Cassara billed Medicare for 43 services in 2022
CMS data shows 43 Medicare services from Dr. Cassara across 2 procedure codes in 2022. Medicare paid $3,886 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Cassara's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Tests and treatments
- 2021: 782022: 2272%
- Office and hospital visits
- 2021: 1162022: 2182%
Dr. Cassara compared with the New York median for emergency medicine physicians, 2022
- Dr. Cassara
- New York median
- Medicare services
- 43vs 21980% below
Medians across 3,510 emergency medicine physicians in New York with Dmand AI profiles that report each measure.
Dr. Cassara's most billed Medicare procedure codes, 2022
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. Cassara 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
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Dr. Michael Cassara received $16 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Cassara from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $16.
Companies that paid Dr. Cassara the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Cassara graduated from NYIT College Of Osteopathic Medicine
Dr. Cassara graduated from NYIT College Of Osteopathic Medicine in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Cassara'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand 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 |
| 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. Michael Cassara
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. Michael Cassara's NPI number?
Dr. Michael Cassara's NPI number is 1447273289. It was assigned on July 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Cassara?
Dr. Michael Cassara is an emergency medicine physician in Manhasset, New York. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Michael Cassara practice?
Dr. Cassara practices at 888 Old Country Road, Plainview, NY 11803. Dr. Cassara also practices at 300 Community Dr, Manhasset, NY 11030. Dr. Cassara's primary practice is Plainview Hospital in Plainview, New York, part of Northwell Health.
What is Dr. Michael Cassara's office phone number?
The practice phone on file for Dr. Cassara is (516) 719-3000.
What is Dr. Michael Cassara's medical license number?
Dr. Cassara holds New York license 212341.
Which hospitals is Dr. Michael Cassara affiliated with?
Dr. Cassara practices at Plainview Hospital in Plainview, New York.
What medical group is Dr. Michael Cassara part of?
Dr. Cassara is linked to Northwell Health Physician Partners Cardiology at Great Neck.
Does Dr. Michael Cassara accept Medicare?
Yes. CMS data shows Dr. Cassara billed Medicare for 43 services in 2022.
What services does Dr. Michael Cassara bill to Medicare?
In 2022, Dr. Cassara's most billed Medicare services were heart test or procedure (93010) and emergency department visit (99285).
Where did Dr. Michael Cassara go to medical school?
Dr. Cassara graduated from NYIT College Of Osteopathic Medicine in 1997.
Has Dr. Michael Cassara received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Dr. Cassara from 1 company from 2016 to 2016. The largest total came from Eli Lilly and Company.
How long has Dr. Michael Cassara been practicing?
Dr. Cassara graduated from medical school in 1997, 29 years ago.
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