NPI registry status
Active
2026 NPPES data Psychiatry Physician NPI 1245238765 M.D.
Verify on CMS → Richard Zarriello, M.D.
Psychiatry Physician in Redding, 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 53,171 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
81
Medicare Part D claims · 17 beneficiaries · Psychiatry Physician avg: 1K
MIPS score
81.8/100
▼ 2 pts below national avg 83.5 · Above neutral
What the federal data shows
Richard Zarriello, M.D. reported a CMS MIPS final score of 81.8/100 - below the 83.5 national average - and filed 81 Medicare Part D claims in 2023.
- 81.8/100
- MIPS score · -2 vs avg
- 81
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥32nd
- pct among measured MIPS (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.
Richard Zarriello, M.D.'s MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
82 ≥ 32nd percentile 32% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Richard Zarriello, M.D. sits
This provider among psychiatry physician peers
Across the 4,541 psychiatry physician providers who report both Medicare Part D prescribing and a MIPS quality score, Richard Zarriello, M.D. writes more Part D claims than 23% of them and scores higher on MIPS quality than 37% - placing this provider in the lower-volume, lower-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 psychiatry physician peer from a representative sample of 60; the gold marker is Richard Zarriello, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Richard Zarriello, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Richard Zarriello, M.D.?
Near national averagePrimary specialty
Psychiatry Physician
Medicare Part D claims
81 92% vs specialty avg
MIPS final score
81.8/100 1.7 pts vs avg
Specialty distribution in California
How Psychiatry Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Richard Zarriello, M.D.'s 2023 MIPS final score plotted against the Psychiatry Physician national average
- MIPS Final Score
- 81.8/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Psychiatry Physician) - 81.8/100 vs national avg 83.5
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).
Richard Zarriello, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 2640 BRESLAUER WAY, Redding, CA, 96001, with a listed phone of (530) 225-5200. NPI 1245238765 was issued on 07/08/2005.
Medicare Part D records for calendar year 2023 show 81 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $7K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.8/100 for the 2023 performance year (Quality 70.7, Cost 79.2), compared with the 83.5 average among clinicians with a measured score.
Psychiatry Physician is a high-volume specialty nationwide, with 53,171 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 | 1245238765 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/08/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
81.7533
Final Score
Measured-score avg: 83.5
70.6525
Quality
79.2183
Cost
72
Promoting Interoperability
Reporting: Group practice
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 Richard Zarriello, M.D.. To verify Richard Zarriello, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
81
Total Claims
$7K
Total Drug Cost
17
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 81
- Total Day Supply
- 2,081
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 54.5 years
- Avg HCC Risk Score
- 1.76
Psychiatry Physician Overview
How Richard Zarriello, M.D. fits within the Psychiatry Physician landscape nationally.
53,171
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider
Richard Zarriello, M.D.'s 81 claims are below 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 Zarriello.
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.
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Frequently Asked Questions
What is Richard Zarriello, M.D.'s specialty? ▼
Richard Zarriello, M.D. specializes in Psychiatry Physician and practices in Redding, California. Credentials: M.D..
How much does Richard Zarriello, M.D. prescribe under Medicare Part D? ▼
In 2023, Richard Zarriello, M.D. wrote 81 Medicare Part D claims totaling $7K in drug costs for 17 beneficiaries.
What is Richard Zarriello, M.D.'s Medicare quality score? ▼
Richard Zarriello, M.D. has a CMS MIPS Final Score of 81.8/100 (Quality: 70.7, Cost: 79.2). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Richard Zarriello, M.D. located? ▼
Richard Zarriello, M.D. is located at 2640 BRESLAUER WAY, Redding, CA, 96001. Phone: (530) 225-5200.
What is Richard Zarriello, M.D.'s NPI number? ▼
Richard Zarriello, M.D.'s National Provider Identifier (NPI) is 1245238765, issued on 07/08/2005.
How many Psychiatry Physician providers are there in the US? ▼
There are 53,171 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
Does Richard Zarriello, M.D. accept Medicare? ▼
Richard Zarriello, M.D. appears in CMS Medicare data with 81 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Richard Zarriello, M.D.'s credentials? ▼
Richard Zarriello, M.D.'s NPI is 1245238765 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.
- 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
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.