Dr. Michael Louis Ernst, MD
- Medicare services, 2024
- 50
- Medicare patients, 2024
- 49
- Part D claims, 2019
- 26
- Hospital affiliations
- 1
- Industry payments
- $2,108
- Practice address
- 24 Research Way, East Setauket, NY 11733
- Practice phone
- Call (631) 444-6270
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Stony Brook Urology, University Faculty Practice Corporation
East Setauket, New York
Find Dr. Ernst's 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. Michael Louis Ernst is a pediatric urology physician in East Setauket, New York
Dr. Ernst practices at Stony Brook Urology, University Faculty Practice Corporation in East Setauket, New York.
Dr. Ernst's NPI, 1386039378, was assigned on April 6, 2015. Dr. Ernst graduated from Stony Brook University Health Sciences Center School of Medicine in 2015. Dr. Ernst holds New York license 316666.
- NPI
- 1386039378NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698010015
- NPI enumeration date
- April 6, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (631) 444-6270
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Louis Ernst practices at Stony Brook Urology, University Faculty Practice Corporation in East Setauket, New York
Dr. Ernst's primary practice is Stony Brook Urology, University Faculty Practice Corporation, at 24 Research Way, East Setauket, NY 11733 in Suffolk County. The practice phone is (631) 444-6270.
- Stony Brook Urology, University Faculty Practice Corporation24 Research Way, East Setauket, NY 11733 · Suffolk CountyPhone(631) 444-6270
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael Louis Ernst is affiliated with 3 sites of care and 1 medical group
Dr. Ernst's primary practice is Stony Brook Urology, University Faculty Practice Corporation in East Setauket, New York. Dr. Ernst is also affiliated with Stony Brook University Hospital. The medical group on file is Stony Brook Urology. Dmand AI also links Dr. Ernst to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Louis Ernst's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ernst practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stony Brook Urology, University Faculty Practice Corporation | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Louis Ernst is one of 33 pediatric urology physicians in New York
Pediatric urology is Dr. Ernst's primary specialty in the NPI Registry, under taxonomy code 2088P0231X. Dmand AI has Dr. Ernst's licenses on file in 2 states: New York and Ohio.
Specialties and state licenses
- Pediatric urology, New YorkPrimary
- Urology, Ohio
Pediatric urology physicians near Dr. Ernst
Counts of pediatric urology 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 Louis Ernst billed Medicare for 50 services in 2024
CMS data shows 50 Medicare services from Dr. Ernst across 3 procedure codes in 2024, for 49 Medicare patients. Medicare paid $5,311 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ernst's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 432024: 5016%
Dr. Ernst compared with the New York median for pediatric urology physicians, 2024
- Dr. Ernst
- New York median
- Part D claims
- 26vs 287% below
Medians across 18 pediatric urology physicians in New York with Dmand AI profiles that report each measure.
Dr. Ernst'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Louis Ernst treated 49 Medicare patients in 2024, average age 75
CMS counts 49 Medicare patients who saw Dr. Ernst in 2024. The largest group is 75 to 84, with 19 patients. 75% of them have high blood pressure, and 71% have high cholesterol. 29% are also on Medicaid. Their average risk score is 2.82, 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. Ernst's median patient age at 8, with 17% women.
Dr. Ernst's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ernst's Medicare patients by sex, 2024
- Women1429%
- Men3571%
Chronic conditions among Dr. Ernst's Medicare patients, 2024
- High blood pressure75%
- High cholesterol71%
- Chronic kidney disease67%
- Arthritis59%
- Diabetes51%
- Atrial fibrillation49%
- Ischemic heart disease49%
- Heart failure43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ernst's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 8
Patient panel by sex, all payers
- Women17%
- Men81%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Louis Ernst wrote 26 Medicare Part D claims in 2019
In 2019, Dr. Ernst wrote 26 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $76 in total drug cost. In 2018, CMS named 148 claims across 3 drugs.
Dr. Ernst's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 1482019: 2682%
Drugs named by CMS: 1 in 2019, 3 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Michael Louis Ernst takes part in Medicare
Dr. Ernst 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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Dr. Michael Louis Ernst received $2,108 in industry payments from 2021 to 2025
CMS Open Payments shows 12 general payments to Dr. Ernst from 9 drug and device companies from 2021 to 2025. Consulting fees make up the largest share, 64% of the total. Novo Nordisk Inc paid the most, $1,350.
General payments to Dr. Ernst by program year, 2021 to 2025
General payments to Dr. Ernst by kind, 2021 to 2025
- Consulting fees$1,35064%
- Food and beverage$59628%
- Education$1638%
Companies that paid Dr. Ernst the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Louis Ernst graduated from Stony Brook University Health Sciences Center School of Medicine
Dr. Ernst graduated from Stony Brook University Health Sciences Center School of Medicine in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Louis Ernst'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 and Drug (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) |
| 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 Louis Ernst
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 Louis Ernst's NPI number?
Dr. Michael Louis Ernst's NPI number is 1386039378. It was assigned on April 6, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Louis Ernst?
Dr. Michael Louis Ernst is a pediatric urology physician in East Setauket, New York. The primary specialty in the NPI Registry is Pediatric Urology Physician (taxonomy code 2088P0231X).
Where does Dr. Michael Louis Ernst practice?
Dr. Ernst practices at 24 Research Way, East Setauket, NY 11733. Dr. Ernst's primary practice is Stony Brook Urology, University Faculty Practice Corporation in East Setauket, New York. Dmand AI also links Dr. Ernst to 1 group practice or clinic.
What is Dr. Michael Louis Ernst's office phone number?
The practice phone on file for Dr. Ernst is (631) 444-6270.
What is Dr. Michael Louis Ernst's medical license number?
Dr. Ernst holds New York license 316666, one of the licenses on file in 2 states.
Which states has Dr. Michael Louis Ernst been licensed in?
Dmand AI has state licenses on file for Dr. Ernst in New York and Ohio.
Which hospitals is Dr. Michael Louis Ernst affiliated with?
Dr. Ernst is affiliated with Stony Brook University Hospital.
What medical group is Dr. Michael Louis Ernst part of?
Dr. Ernst is linked to Stony Brook Urology.
Does Dr. Michael Louis Ernst accept Medicare?
Yes. CMS data shows Dr. Ernst billed Medicare for 50 services in 2024, and Dr. Ernst accepts Medicare assignment.
How many Medicare patients does Dr. Michael Louis Ernst see?
CMS counts 49 Medicare patients who saw Dr. Ernst in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Michael Louis Ernst bill to Medicare?
In 2024, Dr. Ernst's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and hospital inpatient care (99223).
Where did Dr. Michael Louis Ernst go to medical school?
Dr. Ernst graduated from Stony Brook University Health Sciences Center School of Medicine in 2015.
What drugs does Dr. Michael Louis Ernst prescribe most?
In 2019 Medicare Part D data, Dr. Ernst's most prescribed drugs by claims were Ciprofloxacin HCl.
Has Dr. Michael Louis Ernst received payments from drug or device companies?
CMS Open Payments shows $2,108 in general payments to Dr. Ernst from 9 companies from 2021 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Michael Louis Ernst been practicing?
Dr. Ernst graduated from medical school in 2015, 11 years ago.
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