Dr. Robert S. Castroll, MD
- Medicare services, 2024
- 2,540
- Medicare patients, 2024
- 255
- Part D claims, 2024
- 3,722
- MIPS score, 2024
- 23
- Hospital affiliations
- 1
- Practice address
- 50 Route 25A, Smithtown, NY 11787
- Practice phone
- Call (631) 862-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Castroll'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. Robert S. Castroll is a psychiatrist in Smithtown, New York
Dr. Castroll practices at St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre.
Dr. Castroll's NPI, 1407929003, was assigned on November 15, 2006. Dr. Castroll graduated from University of Kansas School of Medicine - Kansas City in 1980. Dr. Castroll holds New York license 147428.
- NPI
- 1407929003NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7416135207
- NPI enumeration date
- November 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (631) 862-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert S. Castroll practices at St. Catherine of Siena Hospital in Smithtown, New York
Dr. Castroll's primary practice is St. Catherine of Siena Hospital, at 50 Route 25A, Smithtown, NY 11787 in Suffolk County. The practice phone is (631) 862-3000.
- St. Catherine of Siena Hospital50 Route 25A, Smithtown, NY 11787 · Suffolk CountyPhone(631) 862-3000
Source: Dmand AI Affiliation Data
Dr. Robert S. Castroll is affiliated with 2 sites of care and 1 medical group
Dr. Castroll's primary practice is St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre. The medical group on file is North Shore Psychiatric Consultants. Dmand AI also links Dr. Castroll to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert S. Castroll's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Castroll practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Catherine of Siena Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert S. Castroll is one of 4,448 psychiatrists in New York
Psychiatry is Dr. Castroll's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Castroll is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Castroll is licensed in New York.
Specialties and state licenses
- Psychiatry, New YorkPrimary
Clinical focus
Dmand AI lists ADHD, adjustment disease, anxiety, bipolar disorder, depression, drug use disorders, insomnia and non-alzheimer's dementia (chronic) among the conditions Dr. Castroll treats.
Psychiatrists near Dr. Castroll
Counts of psychiatrists 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. Robert S. Castroll billed Medicare for 2,540 services in 2024
CMS data shows 2,540 Medicare services from Dr. Castroll across 4 procedure codes in 2024, for 255 Medicare patients. Medicare paid $159,360 for them. Every service was in an office.
Dr. Castroll's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2172024: 1,3269%
- Tests and treatments
- 2023: 1,1282024: 1,2148%
Dr. Castroll compared with the New York median for psychiatrists, 2024
- Dr. Castroll
- New York median
- Medicare services
- 2,540vs 14217.9 times
- Medicare patients
- 255vs 416.2 times
- Part D claims
- 3,537vs 12428.5 times
Medians across 5,024 psychiatrists in New York with Dmand AI profiles that report each measure.
Dr. Castroll'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. Robert S. Castroll treated 255 Medicare patients in 2024, average age 69
CMS counts 255 Medicare patients who saw Dr. Castroll in 2024. The largest group is 65 to 74, with 108 patients. 75% of them have high cholesterol, and 75% have mood disorders. 14% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Castroll's median patient age at 55, with 59% women.
Dr. Castroll's Medicare patients by age, 2024
Dr. Castroll's Medicare patients by sex, 2024
- Women15862%
- Men9738%
Chronic conditions among Dr. Castroll's Medicare patients, 2024
- High cholesterol75%
- Mood disorders75%
- Depression70%
- Anxiety67%
- High blood pressure65%
- Arthritis51%
- Diabetes29%
- Ischemic heart disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Castroll's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women59%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert S. Castroll wrote 3,722 Medicare Part D claims in 2024
In 2024, Dr. Castroll wrote 3,722 Medicare Part D claims for 338 patients. 95% of them were for generic drugs. CMS names the drug for 3,537 of them, across 50 drugs with 11 or more claims each, at $300,444 in total drug cost. In 2023, CMS named 3,552 claims across 56 drugs.
Dr. Castroll's Part D claims by kind of drug, 2024
- Generic3,522 claims95%
- Brand-name200 claims5%
Dr. Castroll's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Castroll's Part D claims, 2024
- Antipsychotics, patients 65 and over8%312 of 3,722 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,5522024: 3,537No change
Drugs named by CMS: 50 in 2024, 56 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Robert S. Castroll scored 23 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 23 out of 100 for Dr. Castroll for performance year 2024, reported individually. Dr. Castroll accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Castroll as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Castroll's MIPS scores, performance year 2024
- 23of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
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. Robert S. Castroll received $26,164 in industry payments from 2016 to 2025
CMS Open Payments shows 1,210 general payments to Dr. Castroll from 43 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Sunovion Pharmaceuticals Inc. paid the most, $2,992.
General payments to Dr. Castroll by program year, 2016 to 2025
General payments to Dr. Castroll by kind, 2016 to 2025
- Food and beverage$25,76598%
- Education$2391%
- Gifts$1591%
Companies that paid Dr. Castroll 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. Robert S. Castroll graduated from University of Kansas School of Medicine - Kansas City
Dr. Castroll graduated from University of Kansas School of Medicine - Kansas City in 1980.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Robert S. Castroll accepts plans from 3 insurance carriers
Dr. Castroll is in network with 3 carriers, including United Healthcare, CMS Medicare and NY State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- CMS Medicare
- NY State Medicaid
Plan types Dr. Castroll accepts, by number of carriers
- Medicaid2
- Medicare2
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert S. Castroll'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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Robert S. Castroll
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. Robert S. Castroll's NPI number?
Dr. Robert S. Castroll's NPI number is 1407929003. It was assigned on November 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert S. Castroll?
Dr. Robert S. Castroll is a psychiatrist in Smithtown, New York. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Robert S. Castroll practice?
Dr. Castroll practices at 50 Route 25A, Smithtown, NY 11787. Dr. Castroll's primary practice is St. Catherine of Siena Hospital in Smithtown, New York, part of Diocese of Rockville Centre. Dmand AI also links Dr. Castroll to 1 group practice or clinic.
What is Dr. Robert S. Castroll's office phone number?
The practice phone on file for Dr. Castroll is (631) 862-3000.
What is Dr. Robert S. Castroll's medical license number?
Dr. Castroll holds New York license 147428.
Which hospitals is Dr. Robert S. Castroll affiliated with?
Dr. Castroll practices at St. Catherine of Siena Hospital in Smithtown, New York.
What medical group is Dr. Robert S. Castroll part of?
Dr. Castroll is linked to North Shore Psychiatric Consultants.
Does Dr. Robert S. Castroll accept Medicare?
Yes. CMS data shows Dr. Castroll billed Medicare for 2,540 services in 2024, and Dr. Castroll accepts Medicare assignment.
Does Dr. Robert S. Castroll offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Castroll as offering telehealth services.
What is Dr. Robert S. Castroll's MIPS score?
Dr. Castroll's MIPS final score for performance year 2024 is 23 out of 100, reported individually.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Robert S. Castroll see?
CMS counts 255 Medicare patients who saw Dr. Castroll in 2024, with an average age of 69.
Is Dr. Robert S. Castroll board certified?
Yes. Dr. Castroll is board certified in psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Robert S. Castroll bill to Medicare?
In 2024, Dr. Castroll's most billed Medicare services were office visit, established patient (99213), psychiatric service (90833) and psychiatric service (90836).
Where did Dr. Robert S. Castroll go to medical school?
Dr. Castroll graduated from University of Kansas School of Medicine - Kansas City in 1980.
What drugs does Dr. Robert S. Castroll prescribe most?
In 2024 Medicare Part D data, Dr. Castroll's most prescribed drugs by claims were Alprazolam, Clonazepam and Escitalopram Oxalate.
Has Dr. Robert S. Castroll received payments from drug or device companies?
CMS Open Payments shows $26,164 in general payments to Dr. Castroll from 43 companies from 2016 to 2025. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Robert S. Castroll been practicing?
Dr. Castroll graduated from medical school in 1980, 46 years ago.
What insurance does Dr. Robert S. Castroll accept?
Dr. Castroll is in network with 3 carriers, including United Healthcare, CMS Medicare and NY State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.
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