Dr. Timothy Bernard Sullivan, MD
- Medicare services, 2018
- 17
- Part D claims, 2024
- 187
- Hospital affiliations
- 2
- Medical group
- 1
- State license
- 1
- Practice address
- 400 East Main Street, Mount Kisco, NY 10549
- Practice phone
- Call (914) 666-1200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Sullivan'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. Timothy Bernard Sullivan is a psychiatrist in Mount Kisco, New York
Dr. Sullivan practices at Northern Westchester Hospital in Mount Kisco, New York, part of Northwell Health.
Dr. Sullivan's NPI, 1285775932, was assigned on February 8, 2007. Dr. Sullivan graduated from Geisel School Of Medicine At Dartmouth in 1977. Dr. Sullivan holds New York license 135140.
- NPI
- 1285775932NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668657362
- NPI enumeration date
- February 8, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (914) 666-1200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Timothy Bernard Sullivan practices at Northern Westchester Hospital in Mount Kisco, New York
Dr. Sullivan's primary practice is Northern Westchester Hospital, at 400 East Main Street, Mount Kisco, NY 10549 in Westchester County. The practice phone is (914) 666-1200.
- Northern Westchester Hospital400 East Main Street, Mount Kisco, NY 10549 · Westchester CountyPhone(914) 666-1200
Source: Dmand AI Affiliation Data
Dr. Timothy Bernard Sullivan is affiliated with 2 sites of care and 1 medical group
Dr. Sullivan's primary practice is Northern Westchester Hospital in Mount Kisco, New York, part of Northwell Health. Dr. Sullivan is also affiliated with Phelps Hospital. The medical group on file is Northwell Health Physician Partners Cardiology at Great Neck.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Timothy Bernard Sullivan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sullivan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Westchester 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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Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Timothy Bernard Sullivan is one of 4,448 psychiatrists in New York
Psychiatry is Dr. Sullivan's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Sullivan is licensed in New York.
Specialties and state licenses
- Psychiatry, New YorkPrimary
Psychiatrists near Dr. Sullivan
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. Timothy Bernard Sullivan billed Medicare for 17 services in 2018
CMS data shows 17 Medicare services from Dr. Sullivan across 1 procedure code in 2018. Medicare paid $1,127 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Sullivan's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 292018: 1741%
Dr. Sullivan compared with the New York median for psychiatrists, 2018
- Dr. Sullivan
- New York median
- Medicare services
- 17vs 14288% below
- Part D claims
- 139vs 12412% above
Medians across 5,024 psychiatrists in New York with Dmand AI profiles that report each measure.
Dr. Sullivan's most billed Medicare procedure codes, 2018
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. Timothy Bernard Sullivan's patients have a median age of 53
Across all payers, Dmand AI patient panel data puts Dr. Sullivan's median patient age at 53, with 29% women.
Dr. Sullivan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women29%
- Men71%
Source: Dmand AI Patient Panel Data
Dr. Timothy Bernard Sullivan wrote 187 Medicare Part D claims in 2024
In 2024, Dr. Sullivan wrote 187 Medicare Part D claims. 94% of them were for generic drugs. CMS names the drug for 139 of them, across 10 drugs with 11 or more claims each, at $6,288 in total drug cost. In 2023, CMS named 137 claims across 9 drugs.
Dr. Sullivan's Part D claims by kind of drug, 2024
- Generic175 claims94%
- Brand-name12 claims6%
Dr. Sullivan'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1372024: 1391%
Drugs named by CMS: 10 in 2024, 9 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
How Dr. Timothy Bernard Sullivan takes part in Medicare
Dr. Sullivan 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. Timothy Bernard Sullivan graduated from Geisel School Of Medicine At Dartmouth
Dr. Sullivan graduated from Geisel School Of Medicine At Dartmouth in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Timothy Bernard Sullivan'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 Data |
| 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) |
| 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. Timothy Bernard Sullivan
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. Timothy Bernard Sullivan's NPI number?
Dr. Timothy Bernard Sullivan's NPI number is 1285775932. It was assigned on February 8, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Timothy Bernard Sullivan?
Dr. Timothy Bernard Sullivan is a psychiatrist in Mount Kisco, New York. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Timothy Bernard Sullivan practice?
Dr. Sullivan practices at 400 East Main Street, Mount Kisco, NY 10549. Dr. Sullivan's primary practice is Northern Westchester Hospital in Mount Kisco, New York, part of Northwell Health.
What is Dr. Timothy Bernard Sullivan's office phone number?
The practice phone on file for Dr. Sullivan is (914) 666-1200.
What is Dr. Timothy Bernard Sullivan's medical license number?
Dr. Sullivan holds New York license 135140.
Which hospitals is Dr. Timothy Bernard Sullivan affiliated with?
Dr. Sullivan practices at Northern Westchester Hospital in Mount Kisco, New York. Dr. Sullivan is also affiliated with Phelps Hospital.
What medical group is Dr. Timothy Bernard Sullivan part of?
Dr. Sullivan is linked to Northwell Health Physician Partners Cardiology at Great Neck.
Does Dr. Timothy Bernard Sullivan accept Medicare?
Yes. CMS data shows Dr. Sullivan billed Medicare for 17 services in 2018, and Dr. Sullivan accepts Medicare assignment.
What services does Dr. Timothy Bernard Sullivan bill to Medicare?
In 2018, Dr. Sullivan's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. Timothy Bernard Sullivan go to medical school?
Dr. Sullivan graduated from Geisel School Of Medicine At Dartmouth in 1977.
What drugs does Dr. Timothy Bernard Sullivan prescribe most?
In 2024 Medicare Part D data, Dr. Sullivan's most prescribed drugs by claims were Lamotrigine, Bupropion XL and Clozapine.
How long has Dr. Timothy Bernard Sullivan been practicing?
Dr. Sullivan graduated from medical school in 1977, 49 years ago.
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