NPI registry status
Active
2026 NPPES data Psychiatry Physician NPI 1336162759 M.D.
Verify on CMS → Serge Abdishoo, M.D.
Psychiatry Physician in Santa Ana, 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 53,104 in 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
2K
Medicare Part D claims · 98 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$123.29
3 payments · CMS Open Payments (Sunshine Act)
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
Serge Abdishoo, M.D. filed 1,900 Medicare Part D claims in 2023 as a Psychiatry Physician in Santa Ana, California, prescribing 95% generic.
- 2K
- Part D claims, 2023
- 95%
- generic prescribing
- $123.29
- industry payments (Sunshine Act)
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.
Serge Abdishoo, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,900 Top 16% higher than 84% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Serge Abdishoo, M.D. 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 Serge Abdishoo, M.D.?
Quality data not reportedPrimary specialty
Psychiatry Physician
Medicare Part D claims
1,900 83% vs specialty avg
Specialty distribution in California
How Psychiatry 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 Psychiatry 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).
Serge Abdishoo, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 601 PARKCENTER DR, Santa Ana, CA, 92705, with a listed phone of (714) 453-0688. NPI 1336162759 was issued on 07/26/2006.
Medicare Part D records for calendar year 2023 show 1,900 prescription claims written by this provider, covering 98 Medicare beneficiaries and totaling roughly $343K in drug spend, split 5% brand-name and 95% generic by claim count.
Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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 | 1336162759 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/26/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Serge Abdishoo, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$123
Largest payer
Otsuka America Pharmaceutical, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Serge Abdishoo, M.D.. To verify Serge Abdishoo, M.D.'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
Serge Abdishoo, M.D. - brand share 5.0%
Psychiatry Physician average
5% brand-name claims vs 95% generic, on 1,900 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.
1,900
Total Claims
$343K
Total Drug Cost
98
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,973
- Total Day Supply
- 56,836
- Brand vs Generic
- 5% brand / 95% generic
- Brand Drug Cost
- $224K
- Generic Drug Cost
- $119K
Patient Demographics
- Average Patient Age
- 55.3 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 28% female / 72% male
- Age Distribution
- <65: 62, 65-74: 34, 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 Serge Abdishoo, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Quetiapine Fumarate
Quetiapine Fumarate
190 claims
- Benztropine Mesylate
Benztropine Mesylate
127 claims
- Divalproex Sodium
Divalproex Sodium
126 claims
- Olanzapine
Olanzapine
112 claims
- Trazodone Hcl
Trazodone Hcl
109 claims
- Sertraline Hcl
Sertraline Hcl
90 claims
- Aripiprazole
Aripiprazole
84 claims
- Risperidone
Risperidone
77 claims
| Drug | Claims |
|---|---|
| Quetiapine Fumarate | 190 |
| Benztropine Mesylate | 127 |
| Divalproex Sodium | 126 |
| Olanzapine | 112 |
| Trazodone Hcl | 109 |
| Sertraline Hcl | 90 |
| Aripiprazole | 84 |
| Risperidone | 77 |
| Haloperidol | 70 |
| Lorazepam | 58 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychiatry Physician Overview
How Serge Abdishoo, M.D. fits within the Psychiatry Physician landscape nationally.
53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider
Serge Abdishoo, M.D.'s 1,900 claims are above the specialty average of 1,038.
Nearby Psychiatry Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Abdishoo.
Dr. Nancy Aaen
MD
Napa, CA
Dr. Criselda Abad-Santos
M.D.
Woodland Hills, CA
Dr. Mekabiz Abaian
MD
San Bernardino, CA
Dr. Kafia Abbasi
M.D.
French Camp, CA
Dr. Michele Abbasi
M.D.
Westlake Village, CA
Compare 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 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Serge Abdishoo, M.D.'s specialty? ▼
Serge Abdishoo, M.D. specializes in Psychiatry Physician and practices in Santa Ana, California. Credentials: M.D..
How much does Serge Abdishoo, M.D. prescribe under Medicare Part D? ▼
In 2023, Serge Abdishoo, M.D. wrote 1,900 Medicare Part D claims totaling $343K in drug costs for 98 beneficiaries.
Where is Serge Abdishoo, M.D. located? ▼
Serge Abdishoo, M.D. is located at 601 PARKCENTER DR, Santa Ana, CA, 92705. Phone: (714) 453-0688.
What is Serge Abdishoo, M.D.'s NPI number? ▼
Serge Abdishoo, M.D.'s National Provider Identifier (NPI) is 1336162759, issued on 07/26/2006.
Does Serge Abdishoo, M.D. prescribe more brand-name or generic drugs? ▼
Serge Abdishoo, M.D.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $224K in brand drug costs.
How many Psychiatry Physician providers are there in the US? ▼
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does Serge Abdishoo, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Serge Abdishoo, M.D.'s most frequently prescribed drugs include Quetiapine Fumarate, Benztropine Mesylate, Divalproex Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Serge Abdishoo, M.D. accept Medicare? ▼
Serge Abdishoo, M.D. appears in CMS Medicare data with 1,900 Part D claims and 98 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Serge Abdishoo, M.D.'s credentials? ▼
Serge Abdishoo, M.D.'s NPI is 1336162759 with credentials M.D.. 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.
- 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.