NPI registry status
Active
2026 NPPES data Sleep Medicine (Psychiatry & Neurology) Physician NPI 1275532301 M.D.
Verify on CMS → Paul Maistros, M.D.
Sleep Medicine (Psychiatry & Neurology) Physician in Fountain Valley, 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 376 in Sleep Medicine (Psychiatry & Neurology) 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
1K
Medicare Part D claims · 188 beneficiaries · Sleep Medicine (Psychiatry & Neurology) Physician avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$45.59
2 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
Paul Maistros, M.D. filed 1,105 Medicare Part D claims in 2023 as a Sleep Medicine (Psychiatry & Neurology) Physician in Fountain Valley, California, prescribing 94% generic.
- 1K
- Part D claims, 2023
- 94%
- generic prescribing
- $45.59
- 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.
Paul Maistros, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,105 Top 23% higher than 77% 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)
Paul Maistros, 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 Paul Maistros, M.D.?
Quality data not reportedPrimary specialty
Sleep Medicine (Psychiatry & Neurology) Physician
Medicare Part D claims
1,105 10% vs specialty avg
Specialty distribution in California
How Sleep Medicine (Psychiatry & Neurology) 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 Sleep Medicine (Psychiatry & Neurology) 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).
Paul Maistros, M.D. appears in the CMS NPPES registry as a Sleep Medicine (Psychiatry & Neurology) Physician provider holding M.D. credentials at 11160 WARNER AVE, Fountain Valley, CA, 92708, with a listed phone of (714) 437-1246. NPI 1275532301 was issued on 07/20/2005.
Medicare Part D records for calendar year 2023 show 1,105 prescription claims written by this provider, covering 188 Medicare beneficiaries and totaling roughly $161K in drug spend, split 6% brand-name and 94% generic by claim count.
Sleep Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 376 enrolled providers across 46 states and an average of 1,005 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 | 1275532301 |
|---|---|
| Specialty | Sleep Medicine (Psychiatry & Neurology) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/20/2005 |
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 Paul Maistros, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$46
Largest payer
ABBVIE 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 Paul Maistros, M.D.. To verify Paul Maistros, 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
Paul Maistros, M.D. - brand share 6.0%
Sleep Medicine (Psychiatry & Neurology) Physician average
6% brand-name claims vs 94% generic, on 1,105 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.
1,105
Total Claims
$161K
Total Drug Cost
188
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,076
- Total Day Supply
- 61,406
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $64K
- Generic Drug Cost
- $98K
Patient Demographics
- Average Patient Age
- 78.2 years
- Avg HCC Risk Score
- 2.09
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Paul Maistros, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Donepezil Hcl
Donepezil Hcl
150 claims
- Memantine Hcl
Memantine Hcl
143 claims
- Carbidopa-Levodopa
Carbidopa-Levodopa
72 claims
- Gabapentin
Gabapentin
69 claims
- Levetiracetam 45
Levetiracetam
45 claims
- Mirtazapine 43
Mirtazapine
43 claims
- Divalproex Sodium 36
Divalproex Sodium
36 claims
- Rasagiline Mesylate 36
Rasagiline Mesylate
36 claims
| Drug | Claims |
|---|---|
| Donepezil Hcl | 150 |
| Memantine Hcl | 143 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 72 |
| Gabapentin | 69 |
| Levetiracetam | 45 |
| Mirtazapine | 43 |
| Divalproex Sodium | 36 |
| Rasagiline Mesylate | 36 |
| Propranolol Hcl | 32 |
| Trazodone Hcl | 30 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Sleep Medicine (Psychiatry & Neurology) Physician in CA →
All providers in California →
Compare specialties →
Sleep Medicine (Psychiatry & Neurology) Physician Overview
How Paul Maistros, M.D. fits within the Sleep Medicine (Psychiatry & Neurology) Physician landscape nationally.
376
Sleep Medicine (Psychiatry & Neurology) Physician Providers in US
46
States with Sleep Medicine (Psychiatry & Neurology) Physician
1,005
Avg Claims per Provider
Paul Maistros, M.D.'s 1,105 claims are above the specialty average of 1,005.
Nearby Sleep Medicine (Psychiatry & Neurology) Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Maistros.
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 Sleep Medicine (Psychiatry & Neurology) 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 Paul Maistros, M.D.'s specialty? ▼
Paul Maistros, M.D. specializes in Sleep Medicine (Psychiatry & Neurology) Physician and practices in Fountain Valley, California. Credentials: M.D..
How much does Paul Maistros, M.D. prescribe under Medicare Part D? ▼
In 2023, Paul Maistros, M.D. wrote 1,105 Medicare Part D claims totaling $161K in drug costs for 188 beneficiaries.
Where is Paul Maistros, M.D. located? ▼
Paul Maistros, M.D. is located at 11160 WARNER AVE, Fountain Valley, CA, 92708. Phone: (714) 437-1246.
What is Paul Maistros, M.D.'s NPI number? ▼
Paul Maistros, M.D.'s National Provider Identifier (NPI) is 1275532301, issued on 07/20/2005.
Does Paul Maistros, M.D. prescribe more brand-name or generic drugs? ▼
Paul Maistros, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $64K in brand drug costs.
How many Sleep Medicine (Psychiatry & Neurology) Physician providers are there in the US? ▼
There are 376 Sleep Medicine (Psychiatry & Neurology) Physician providers across 46 states in the US. The average Sleep Medicine (Psychiatry & Neurology) Physician provider writes 1,005 Medicare Part D claims per year.
What drugs does Paul Maistros, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Paul Maistros, M.D.'s most frequently prescribed drugs include Donepezil Hcl, Memantine Hcl, Carbidopa-Levodopa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Paul Maistros, M.D. accept Medicare? ▼
Paul Maistros, M.D. appears in CMS Medicare data with 1,105 Part D claims and 188 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Paul Maistros, M.D.'s credentials? ▼
Paul Maistros, M.D.'s NPI is 1275532301 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.
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 May 2026.