William N. Sokol, MD
Allergy & Immunology Physician · Newport Beach, CA
William N. Sokol, MD is an allergy & immunology physician with a practice address in Newport Beach, California, and NPI 1497756522, issued on Aug 10, 2005. Check the license (California C31823, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William N. Sokol
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- C31823 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 Newport Center Dr, Newport Beach, CA 92660
- Phone
- (949) 645-3374
- Enumerated
- Aug 10, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (949) 645-2410
- Medicare enrollment
- Enrolled (PECOS I20040827000732); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1968
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 400 Newport Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William N. Sokol in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C31823Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% more Medicare Part D claims than the average allergy & immunology physician in 2024
1,267 Medicare Part D claims for 259 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Prednisone139 claims
- Montelukast Sodium126 claims
- Ipratropium Bromide118 claims
- Amoxicillin-Clavulanate Potass100 claims
- Trelegy Ellipta91 claims
- Albuterol Sulfate Hfa55 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 15.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
William N. Sokol among 444 allergy & immunology physician records in California
William N. Sokol, MD is one of 444 allergy & immunology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1968 · median 2004 among the 281 with a school on file
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Newport Beach → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Loula Amin, M.D.Newport Beach, CA 926601043452782
- John Chiu, MDNewport Beach, CA 926601326121716
- Min Jung Lee, MDNewport Beach, CA 926601295050508
- Ripdeep Mangat, M.D.Newport Beach, CA 926631518069590
- Kristen Walters, MDAliso Viejo, CA 926561437442308
- Vivian Aranez, M.D.Huntington Beach, CA 926481699032805
- Steven Weinstein, MDHuntington Beach, CA 926471518035120
- Marc Dyer, MDLaguna Niguel, CA 926771144341918
Common questions
What is William N. Sokol, MD's NPI number?
William N. Sokol, MD's National Provider Identifier (NPI) is 1497756522, issued on Aug 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William N. Sokol, MD located?
The NPPES record lists a practice address at 400 Newport Center Dr, Newport Beach, CA, 92660. Phone: (949) 645-3374. Providers update this record themselves, so call before visiting.
How can I verify William N. Sokol, MD's license?
NPPES lists California license number C31823, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William N. Sokol, MD prescribe under Medicare Part D?
In 2024, William N. Sokol, MD had 1,267 Medicare Part D claims for 259 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is William N. Sokol, MD's MIPS final score?
The 2023 MIPS final score is 15.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.