NPI registry status
Active
2026 NPPES data Geriatric Psychiatry Physician NPI 1598949430 MD
Verify on CMS → David Hsu, MD
Geriatric Psychiatry Physician in Sacramento, 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 785 in Geriatric Psychiatry 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
5K
Medicare Part D claims · 313 beneficiaries · Geriatric Psychiatry Physician avg: 2K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.5/100
▲ 13 pts above national avg 83.1 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Hsu, MD reported a CMS MIPS final score of 96.5/100 - above the 83.1 national average - and filed 5,368 Medicare Part D claims in 2023.
- 96.5/100
- MIPS score · +13 vs avg
- 5K
- Part D claims, 2023
- 98%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
David Hsu, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
97 Top 17% higher than 83% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where David Hsu, MD sits
This provider among geriatric psychiatry physician peers
Across the 114 geriatric psychiatry physician providers who report both Medicare Part D prescribing and a MIPS quality score, David Hsu, MD writes more Part D claims than 92% of them and scores higher on MIPS quality than 78% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one geriatric psychiatry physician peer from a representative sample of 60; the gold marker is David Hsu, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
David Hsu, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about David Hsu, MD?
High performer (top quartile)Primary specialty
Geriatric Psychiatry Physician
Medicare Part D claims
5,368 238% vs specialty avg
MIPS final score
96.5/100 13.4 pts vs avg
Specialty distribution in California
How Geriatric Psychiatry Physician compares to other specialties among California providers
Medicare quality performance, MIPS
David Hsu, MD's 2023 MIPS final score plotted against the Geriatric Psychiatry Physician national average
- MIPS Final Score
- 96.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Geriatric Psychiatry Physician) - 96.5/100 vs national avg 83.1
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).
David Hsu, MD appears in the CMS NPPES registry as a Geriatric Psychiatry Physician provider holding MD credentials at 1792 TRIBUTE RD, Sacramento, CA, 95815, with a listed phone of (916) 924-6400. NPI 1598949430 was issued on 12/27/2007.
Medicare Part D records for calendar year 2023 show 5,368 prescription claims written by this provider, covering 313 Medicare beneficiaries and totaling roughly $312K in drug spend, split 2% brand-name and 98% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 96.5/100 for the 2023 performance year (Quality 80.3), compared with the national average of 83.1.
Geriatric Psychiatry Physician is a narrow specialty nationwide, with 785 enrolled providers across 46 states and an average of 1,586 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1598949430 |
|---|---|
| Specialty | Geriatric Psychiatry Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/27/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
96.5085
Final Score
Avg: 83.1
80.342
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where David Hsu, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Dignity Health Medical Foundation
Sacramento, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 David Hsu, MD. To verify David Hsu, 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.
Brand vs generic prescribing mix · Generic-heavy
David Hsu, MD - brand share 2.0%
Geriatric Psychiatry Physician average
2% brand-name claims vs 98% generic, on 5,368 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
5,368
Total Claims
$312K
Total Drug Cost
313
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 7,393
- Total Day Supply
- 219,624
- Brand vs Generic
- 2% brand / 98% generic
- Brand Drug Cost
- $118K
- Generic Drug Cost
- $194K
Patient Demographics
- Average Patient Age
- 65.0 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 115, 65-74: 135, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Hsu, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Sertraline Hcl
Sertraline Hcl
410 claims
- Quetiapine Fumarate
Quetiapine Fumarate
374 claims
- Trazodone Hcl
Trazodone Hcl
324 claims
- Alprazolam
Alprazolam
315 claims
- Bupropion Xl
Bupropion Xl
311 claims
- Clonazepam
Clonazepam
251 claims
- Escitalopram Oxalate
Escitalopram Oxalate
244 claims
- Lamotrigine
Lamotrigine
241 claims
| Drug | Claims |
|---|---|
| Sertraline Hcl | 410 |
| Quetiapine Fumarate | 374 |
| Trazodone Hcl | 324 |
| Alprazolam | 315 |
| Bupropion Xl Bupropion Hcl | 311 |
| Clonazepam | 251 |
| Escitalopram Oxalate | 244 |
| Lamotrigine | 241 |
| Fluoxetine Hcl | 232 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 212 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Geriatric Psychiatry Physician Overview
How David Hsu, MD fits within the Geriatric Psychiatry Physician landscape nationally.
785
Geriatric Psychiatry Physician Providers in US
46
States with Geriatric Psychiatry Physician
1,586
Avg Claims per Provider
David Hsu, MD's 5,368 claims are above the specialty average of 1,586.
Nearby Geriatric Psychiatry Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Hsu.
Dr. Kotra Ajir
MD
Los Angeles, CA
Richard Almond
Palo Alto, CA
Lydia Ann
Orange, CA
Dr. Jasdeep Aulakh
M.D.
Patton, CA
Dr. Abes Bagheri
M.D.
Los Alamitos, CA
Compare Geriatric Psychiatry Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Geriatric Psychiatry Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is David Hsu, MD's specialty? ▼
David Hsu, MD specializes in Geriatric Psychiatry Physician and practices in Sacramento, California. Credentials: MD.
How much does David Hsu, MD prescribe under Medicare Part D? ▼
In 2023, David Hsu, MD wrote 5,368 Medicare Part D claims totaling $312K in drug costs for 313 beneficiaries.
What is David Hsu, MD's Medicare quality score? ▼
David Hsu, MD has a CMS MIPS Final Score of 96.5/100 (Quality: 80.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is David Hsu, MD located? ▼
David Hsu, MD is located at 1792 TRIBUTE RD, Sacramento, CA, 95815. Phone: (916) 924-6400.
What is David Hsu, MD's NPI number? ▼
David Hsu, MD's National Provider Identifier (NPI) is 1598949430, issued on 12/27/2007.
Does David Hsu, MD prescribe more brand-name or generic drugs? ▼
David Hsu, MD's prescribing is 2% brand-name and 98% generic drugs by claim count, with $118K in brand drug costs.
How many Geriatric Psychiatry Physician providers are there in the US? ▼
There are 785 Geriatric Psychiatry Physician providers across 46 states in the US. The average Geriatric Psychiatry Physician provider writes 1,586 Medicare Part D claims per year.
What drugs does David Hsu, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, David Hsu, MD's most frequently prescribed drugs include Sertraline Hcl, Quetiapine Fumarate, Trazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Hsu, MD accept Medicare? ▼
David Hsu, MD appears in CMS Medicare data with 5,368 Part D claims and 313 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Hsu, MD's credentials? ▼
David Hsu, MD's NPI is 1598949430 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.