NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1497756522 MD
Verify on CMS → William Sokol, MD
Allergy & Immunology Physician in Newport Beach, 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 3,394 in Allergy & Immunology 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 · 257 beneficiaries · Allergy & Immunology Physician avg: 764
MIPS score
15.5/100
▼ 68 pts below national avg 83.1 · Penalty band
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
William Sokol, MD reported a CMS MIPS final score of 15.5/100 - below the 83.1 national average - and filed 1,131 Medicare Part D claims in 2023.
- 15.5/100
- MIPS score · -68 vs avg
- 1K
- 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.
William Sokol, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
16 2nd percentile higher than 2% 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 William Sokol, MD sits
This provider among allergy & immunology physician peers
Across the 740 allergy & immunology physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Sokol, MD writes more Part D claims than 66% of them and scores higher on MIPS quality than 3% - placing this provider in the high-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 allergy & immunology physician peer from a representative sample of 60; the gold marker is William Sokol, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Sokol, MD 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 William Sokol, MD?
Below national averagePrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
1,131 48% vs specialty avg
MIPS final score
15.5/100 67.6 pts vs avg
Specialty distribution in California
How Allergy & Immunology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
William Sokol, MD's 2023 MIPS final score plotted against the Allergy & Immunology Physician national average
- MIPS Final Score
- 15.5/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Allergy & Immunology Physician) - 15.5/100 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).
William Sokol, MD appears in the CMS NPPES registry as an Allergy & Immunology Physician provider holding MD credentials at 400 NEWPORT CENTER DR, Newport Beach, CA, 92660, with a listed phone of (949) 645-3374. NPI 1497756522 was issued on 08/10/2005.
Medicare Part D records for calendar year 2023 show 1,131 prescription claims written by this provider, covering 257 Medicare beneficiaries and totaling roughly $683K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 15.5/100 for the 2023 performance year (Quality 0, Cost 51.8), compared with the national average of 83.1.
Allergy & Immunology Physician is a narrow specialty nationwide, with 3,394 enrolled providers across 52 states and an average of 764 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 | 1497756522 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/10/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
15.5378
Final Score
Avg: 83.1
0
Quality
51.7928
Cost
Reporting: Individual
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 William Sokol, MD. To verify William Sokol, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,131
Total Claims
$683K
Total Drug Cost
257
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,472
- Total Day Supply
- 36,346
- Generic Drug Cost
- $23K
- Antibiotic Claims
- 205
Patient Demographics
- Average Patient Age
- 76.1 years
- Avg HCC Risk Score
- 1.13
- Gender Split
- 68% female / 32% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What William Sokol, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Montelukast Sodium
Montelukast Sodium
106 claims
- Ipratropium Bromide
Ipratropium Bromide
93 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
92 claims
- Trelegy Ellipta
Trelegy Ellipta
75 claims
- Breztri Aerosphere
Breztri Aerosphere
69 claims
- Prednisone
Prednisone
50 claims
- Dupixent Syringe
Dupixent Syringe
47 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
45 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 106 |
| Ipratropium Bromide | 93 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 92 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 75 |
| Breztri Aerosphere Budesonide/Glycopyr/Formoterol | 69 |
| Prednisone | 50 |
| Dupixent Syringe Dupilumab | 47 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 45 |
| Symbicort Budesonide/Formoterol Fumarate | 36 |
| Levofloxacin | 32 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy & Immunology Physician Overview
How William Sokol, MD fits within the Allergy & Immunology Physician landscape nationally.
3,394
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider
William Sokol, MD's 1,131 claims are above the specialty average of 764.
Nearby Allergy & Immunology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Sokol.
Dr. Seema Aceves
M.D., PH.D.
San Diego, CA
Dr. Daniel Adelman
M.D.
San Francisco, CA
Dr. Rhonda Alkatib
M.D.
San Diego, CA
Dr. Mercedes Amado
M.D.
San Diego, CA
Dr. Loula Amin
M.D.
Newport Beach, CA
Compare Allergy & Immunology 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 Allergy & Immunology 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 William Sokol, MD's specialty? ▼
William Sokol, MD specializes in Allergy & Immunology Physician and practices in Newport Beach, California. Credentials: MD.
How much does William Sokol, MD prescribe under Medicare Part D? ▼
In 2023, William Sokol, MD wrote 1,131 Medicare Part D claims totaling $683K in drug costs for 257 beneficiaries.
What is William Sokol, MD's Medicare quality score? ▼
William Sokol, MD has a CMS MIPS Final Score of 15.5/100 (Quality: 0, Cost: 51.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Sokol, MD located? ▼
William Sokol, MD is located at 400 NEWPORT CENTER DR, Newport Beach, CA, 92660. Phone: (949) 645-3374.
What is William Sokol, MD's NPI number? ▼
William Sokol, MD's National Provider Identifier (NPI) is 1497756522, issued on 08/10/2005.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,394 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does William Sokol, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, William Sokol, MD's most frequently prescribed drugs include Montelukast Sodium, Ipratropium Bromide, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Sokol, MD accept Medicare? ▼
William Sokol, MD appears in CMS Medicare data with 1,131 Part D claims and 257 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Sokol, MD's credentials? ▼
William Sokol, MD's NPI is 1497756522 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.
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.