NPI registry status
Active
2026 NPPES data Behavioral Neurology & Neuropsychiatry Physician NPI 1003834789 MD
Verify on CMS → Nihal De Silva, MD
Behavioral Neurology & Neuropsychiatry Physician in San Diego, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 285 in Behavioral Neurology & Neuropsychiatry Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
821
Medicare Part D claims · 75 beneficiaries · Behavioral Neurology & Neuropsychiatry Physician avg: 763
What the federal data shows
Nihal De Silva, MD filed 821 Medicare Part D claims in 2024 as a Behavioral Neurology & Neuropsychiatry Physician in San Diego, California.
- 821
- Part D claims, 2024
- ≥72nd
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Nihal De Silva, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1003834789), first enumerated 07/18/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 821 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Nihal De Silva, MD's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare De Silva with other Behavioral Neurology & Neuropsychiatry Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in California
- Dr. Murtadha Abdulhussein, MD Fresno, CA
- Dr. Paul Ackerman, MD Los Angeles, CA
- Dr. Mohammed Ahmed, M.D La Jolla, CA
- Dr. Julie Arellano, MD Elk Grove, CA
- Dr. Oluseyi Awodele, M.D, M.S Carlsbad, CA
- Dr. Kevin Buford, MD San Bernardino, CA
Other specialties in San Diego: Behavior Technician (8,276) · Student in an Organized Health Care Education/Training Program (2,704) · Marriage & Family Therapist (2,412) · Mental Health Counselor (2,211)
CMS NPPES provider registry desk
NPI 1003834789 · Behavioral Neurology & Neuropsychiatry Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1003834789
- ENUM-LEGACY 2006
- TAX-TRACE 285
- RX-LIGHT 821
- BOOK-THIN 42 in California
- PHOTO-ENUM Madeleine Moreno, MS… · 2006
Nihal De Silva, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
821 ≥ 72nd percentile 72% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Nihal De Silva, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Nihal De Silva, MD?
Quality data not reportedPrimary specialty
Behavioral Neurology & Neuropsychiatry Physician
Medicare Part D claims
821 8% vs specialty avg
Specialty distribution in California
How Behavioral Neurology & Neuropsychiatry Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Behavioral Neurology & Neuropsychiatry Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1003834789 |
|---|---|
| Specialty | Behavioral Neurology & Neuropsychiatry Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/18/2006 |
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Nihal De Silva, MD. To verify Nihal De Silva, MD's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
821
Total Claims
$9K
Total Drug Cost
75
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 929.167
- Total Day Supply
- 27,234
- Generic Drug Cost
- $9K
Patient Demographics
- Average Patient Age
- 66.6 years
- Avg HCC Risk Score
- 1.59
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 23, 65-74: 38, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Nihal De Silva, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Trazodone Hcl
Trazodone Hcl
105 claims
- Olanzapine
Olanzapine
69 claims
- Paroxetine Hcl
Paroxetine Hcl
69 claims
- Clonazepam
Clonazepam
64 claims
- Fluoxetine Hcl
Fluoxetine Hcl
55 claims
- Risperidone
Risperidone
53 claims
- Alprazolam
Alprazolam
50 claims
- Lorazepam
Lorazepam
44 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 105 |
| Olanzapine | 69 |
| Paroxetine Hcl | 69 |
| Clonazepam | 64 |
| Fluoxetine Hcl | 55 |
| Risperidone | 53 |
| Alprazolam | 50 |
| Lorazepam | 44 |
| Quetiapine Fumarate | 42 |
| Duloxetine Hcl | 32 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Behavioral Neurology & Neuropsychiatry Physician in CA →
All providers in California →
Compare specialties →
Behavioral Neurology & Neuropsychiatry Physician Overview
How Nihal De Silva, MD fits within the Behavioral Neurology & Neuropsychiatry Physician landscape nationally.
285
Behavioral Neurology & Neuropsychiatry Physician Providers in US
44
States with Behavioral Neurology & Neuropsychiatry Physician
763
Avg Claims per Provider
Nihal De Silva, MD's 821 claims are above the specialty average of 763.
Nationwide Behavioral Neurology & Neuropsychiatry Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for De Silva, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Behavioral Neurology & Neuropsychiatry Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as De Silva.
One of 42 Behavioral Neurology & Neuropsychiatry Physician providers enrolled in California, 11 are shown on this page.
Frequently Asked Questions
What is Nihal De Silva, MD's specialty? ▼
Nihal De Silva, MD specializes in Behavioral Neurology & Neuropsychiatry Physician and practices in San Diego, California. Credentials: MD.
How much does Nihal De Silva, MD prescribe under Medicare Part D? ▼
In 2024, Nihal De Silva, MD wrote 821 Medicare Part D claims totaling $9K in drug costs for 75 beneficiaries.
Where is Nihal De Silva, MD located? ▼
Nihal De Silva, MD is located at 3525 DEL MAR HEIGHTS ROAD, San Diego, CA, 92130. Phone: (973) 563-6220.
What is Nihal De Silva, MD's NPI number? ▼
Nihal De Silva, MD's National Provider Identifier (NPI) is 1003834789, issued on 07/18/2006.
How many Behavioral Neurology & Neuropsychiatry Physician providers are there in the US? ▼
There are 285 Behavioral Neurology & Neuropsychiatry Physician providers across 44 states in the US. The average Behavioral Neurology & Neuropsychiatry Physician provider writes 763 Medicare Part D claims per year.
What drugs does Nihal De Silva, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Nihal De Silva, MD's most frequently prescribed drugs include Trazodone Hcl, Olanzapine, Paroxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nihal De Silva, MD accept Medicare? ▼
Nihal De Silva, MD appears in CMS Medicare data with 821 Part D claims and 75 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nihal De Silva, MD's credentials? ▼
Nihal De Silva, MD's NPI is 1003834789 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.