Physician Profile
Ramaswamy Viswanathan, M.D.
Unclaimed ProfileAbout Dr. Viswanathan
Ramaswamy Viswanathan, M.D. is a healthcare provider in Brooklyn, NY specializing in addiction medicine (neurology/psychiatry). Ramaswamy is also listed as specializing in psychiatry. Medicare claims data shows Ramaswamy provided 242 services to 36 patients. The services billed most often include psychotherapy with evaluation and management visit, 30 minutes, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (718) 270-2352
- Email not available
Practice Locations
450 CLARKSON AVE
Brooklyn, NY 11203
Conditions Commonly Evaluated or Treated
Within Psychiatry generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Cognitive and adjustment
Eating Disorders
Eating, sleep, and somatic
Mood & Depression
Neurodevelopmental and behavioral
Personality and dissociative
Sleep & Wakefulness
Procedures & services
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Assessment
Addiction care
Addiction Medicine
Assessments
Brain stimulation
Consultations
Diagnostics
Inpatient care
Interventional psychiatry
Psychotherapy
Sleep Medicine
Specialized care
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
242 services · 36 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy with evaluation and management visit, 30 minutes | Treatment | 90833 |
103 | Too few peers to compare |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
84 | As often as other peers in Addiction Medicine (Neurology/Ps… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
55 | As often as other peers in Addiction Medicine (Neurology/Ps… |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other addiction medicines in Brooklyn 4
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1972 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy with evaluation and management visit, 30 minutes 8
Providers in NY who bill this service to Medicare most often.
Common questions
What kind of doctor is Ramaswamy Viswanathan?
Ramaswamy Viswanathan is an addiction medicine (neurology/psychiatry) in Brooklyn, NY. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Ramaswamy Viswanathan's address?
Ramaswamy Viswanathan is listed at 450 Clarkson Ave, Brooklyn, NY 11203. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Ramaswamy Viswanathan?
The number on file is (718) 270-2352. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Ramaswamy Viswanathan?
Ramaswamy Viswanathan's National Provider Identifier is 1215986831. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Ramaswamy Viswanathan train?
Ramaswamy Viswanathan attended Other, graduating in 1972. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Ramaswamy Viswanathan have?
Ramaswamy Viswanathan has 54 years experience. Calculated from a graduation year of 1972, reported in the CMS National Downloadable File.
CMS public data
What procedures does Ramaswamy Viswanathan perform?
According to Medicare billing data, Ramaswamy Viswanathan provides treatments such as psychotherapy with evaluation and management visit, 30 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Ramaswamy Viswanathan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Ramaswamy Viswanathan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.