NPI registry status
Active
2026 NPPES data Pediatric Adolescent Medicine Physician NPI 1659638823
Verify on CMS → Christopher Weiss
Pediatric Adolescent Medicine Physician in Palo Alto, 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 2,584 in Pediatric Adolescent Medicine 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
45
Medicare Part D claims · Pediatric Adolescent Medicine Physician avg: 249
MIPS score
100/100
▲ 17 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Christopher Weiss reported a CMS MIPS final score of 100/100 - above the 83.1 national average - and filed 45 Medicare Part D claims in 2023.
- 100/100
- MIPS score · +17 vs avg
- 45
- Part D claims, 2023
- 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.
Christopher Weiss's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
100 Top 7% higher than 93% 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 Christopher Weiss sits
This provider among pediatric adolescent medicine physician peers
Across the 24 pediatric adolescent medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Christopher Weiss writes more Part D claims than 54% of them and scores higher on MIPS quality than 83% - 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 pediatric adolescent medicine physician peer from a representative sample of 23; the gold marker is Christopher Weiss. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Christopher Weiss 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 Christopher Weiss?
High performer (top quartile)Primary specialty
Pediatric Adolescent Medicine Physician
Medicare Part D claims
45 82% vs specialty avg
MIPS final score
100/100 16.9 pts vs avg
Specialty distribution in California
How Pediatric Adolescent Medicine Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Christopher Weiss's 2023 MIPS final score plotted against the Pediatric Adolescent Medicine Physician national average
- MIPS Final Score
- 100/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Pediatric Adolescent Medicine Physician) - 100/100 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).
Christopher Weiss appears in the CMS NPPES registry as a Pediatric Adolescent Medicine Physician provider at 725 WELCH RD, Palo Alto, CA, 94304, with a listed phone of (650) 497-8000. NPI 1659638823 was issued on 04/12/2012.
Medicare Part D records for calendar year 2023 show 45 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $5K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year, compared with the national average of 83.1.
Pediatric Adolescent Medicine Physician is a narrow specialty nationwide, with 2,584 enrolled providers across 52 states and an average of 249 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 | 1659638823 |
|---|---|
| Specialty | Pediatric Adolescent Medicine Physician |
| Gender | Male |
| NPI Issued | 04/12/2012 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
100
Final Score
Avg: 83.1
96
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Christopher Weiss 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.
Skilled Facility Health Care Solutions Inc
Hayward, 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 Christopher Weiss. To verify Christopher Weiss'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.
45
Total Claims
$5K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 45
- Total Day Supply
- 740
- Generic Drug Cost
- $3K
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 6.77
More Pediatric Adolescent Medicine Physician in CA →
All providers in California →
Compare specialties →
Pediatric Adolescent Medicine Physician Overview
How Christopher Weiss fits within the Pediatric Adolescent Medicine Physician landscape nationally.
2,584
Pediatric Adolescent Medicine Physician Providers in US
52
States with Pediatric Adolescent Medicine Physician
249
Avg Claims per Provider
Christopher Weiss's 45 claims are below the specialty average of 249.
Nearby Pediatric Adolescent Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Weiss.
Dr. William Adelman
M.D.
Orange, CA
Dr. Shelley Aggarwal
MD
Palo Alto, CA
Dr. Elsa Aguilar
M.D.
Anaheim, CA
Dr. Saverio Aita
M.D.
Napa, CA
Dr. Kaneez Ali
PA
Perris, CA
Compare Pediatric Adolescent Medicine 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 Pediatric Adolescent Medicine 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 Christopher Weiss's specialty? ▼
Christopher Weiss specializes in Pediatric Adolescent Medicine Physician and practices in Palo Alto, California.
How much does Christopher Weiss prescribe under Medicare Part D? ▼
In 2023, Christopher Weiss wrote 45 Medicare Part D claims totaling $5K in drug costs for N/A beneficiaries.
What is Christopher Weiss's Medicare quality score? ▼
Christopher Weiss has a CMS MIPS Final Score of 100/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Christopher Weiss located? ▼
Christopher Weiss is located at 725 WELCH RD, Palo Alto, CA, 94304. Phone: (650) 497-8000.
What is Christopher Weiss's NPI number? ▼
Christopher Weiss's National Provider Identifier (NPI) is 1659638823, issued on 04/12/2012.
How many Pediatric Adolescent Medicine Physician providers are there in the US? ▼
There are 2,584 Pediatric Adolescent Medicine Physician providers across 52 states in the US. The average Pediatric Adolescent Medicine Physician provider writes 249 Medicare Part D claims per year.
Does Christopher Weiss accept Medicare? ▼
Christopher Weiss appears in CMS Medicare data with 45 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Weiss's credentials? ▼
Christopher Weiss's NPI is 1659638823. 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.
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.