NPPES file of Aug 9, 2026

William Park, M.D.

Emergency Medicine Physician · Newport Beach, CA

William Park, M.D. is an emergency medicine physician with a practice address in Newport Beach, California, and NPI 1629031455, issued on Apr 11, 2006. Check the license (California G72990, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629031455
Name
William Park
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
G72990 CA
Self-reported in NPPES; status is on the state search
Practice location
One Hoag Dr, Newport Beach, CA 92663
Phone
(949) 764-5689
Enumerated
Apr 11, 2006
Record last updated
Sep 20, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(405) 751-3183
Medicaid IDs
00G729900670 CA
00G729900 CA
Medicare enrollment
Enrolled (PECOS I20041028000273); accepts Medicare assignment
Medical or professional school
Albany Medical College Of Union University, 1989
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →

Also registered at One Hoag Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. David Christy, M.D.Emergency Medicine Physician1619930492
  2. Michael Contino, M.D.Emergency Medicine Physician1528021300
  3. Darrin Fryer, M.D.Emergency Medicine Physician1578526356
  4. Charles Goldsworthy, M.D.Emergency Medicine Physician1932162773
  5. Brian Grade, M.D.Emergency Medicine Physician1932162724
  6. Pascal Juang, M.D.Emergency Medicine Physician1164485967

Verify William Park in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G72990    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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15% fewer Medicare Part D claims than the average emergency medicine physician in 2024

192 Medicare Part D claims for 85 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 16 claims were for opioids.

  1. William Park192
  2. Specialty average226

Most prescribed

  1. Amoxicillin-Clavulanate Potass11 claims
  2. Hydrocodone-Acetaminophen11 claims
  3. Ondansetron Odt11 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.

Bills Medicare through one group practice

  1. Emergency Physicians OF Orange CountyNewport Beach, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

William Park among 7,751 emergency medicine physician records in California

William Park, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.

  • NPI issued2006 · 4% of these records are older, 60% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated1989 · median 2011 among the 4,560 with a school on file
  • Record last updated2012 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

All 7,751 in California → Every provider in Newport Beach → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Eric Alcouloumre, M.D.Newport Beach, CA 926631568425312
  2. Steven Callahan, M.D.Newport Beach, CA 926631164485991
  3. David Christy, M.D.Newport Beach, CA 926631619930492
  4. Michael Contino, M.D.Newport Beach, CA 926631528021300
  5. Darrin Fryer, M.D.Newport Beach, CA 926631578526356
  6. Charles Goldsworthy, M.D.Newport Beach, CA 926631932162773
  7. Brian Grade, M.D.Newport Beach, CA 926631932162724
  8. Jonathan Houpt, M.D.Newport Beach, CA 926631447258199

Common questions

What is William Park, M.D.'s NPI number?

William Park, M.D.'s National Provider Identifier (NPI) is 1629031455, issued on Apr 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Park, M.D. located?

The NPPES record lists a practice address at One Hoag Dr, Newport Beach, CA, 92663. Phone: (949) 764-5689. Providers update this record themselves, so call before visiting.

How can I verify William Park, M.D.'s license?

NPPES lists California license number G72990, 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 Park, M.D. prescribe under Medicare Part D?

In 2024, William Park, M.D. had 192 Medicare Part D claims for 85 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.