William G. Perkins, M.D.
Pediatric Critical Care Medicine Physician · Fountain Valley, CA
William G. Perkins, M.D. is a pediatric critical care medicine physician with a practice address in Fountain Valley, California, and NPI 1699779181, issued on Jun 13, 2005. Check the license (California G41589, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William G. Perkins
- Credential
- M.D.
- Primary taxonomy
- Pediatric Critical Care Medicine Physician 2080P0203X
- License number
- G41589 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17100 Euclid St., Fountain Valley, CA 92708
- Phone
- (714) 966-7253
- Enumerated
- Jun 13, 2005
- Record last updated
- Feb 2, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (714) 966-3354
- Entity
- Type 1 · individual
8 nearest pediatric critical care medicine physician records → All 337 in California → Look up another NPI →
Also registered at 17100 Euclid St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kenneth Kim, M.DPediatric Critical Care Medicine Physician1922002468
- Zacharia Reda, M.D.Pediatric Pulmonology Physician1487658936
Verify William G. Perkins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G41589Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% more Medicare Part D claims than the average pediatric critical care medicine physician in 2024
57 Medicare Part D claims, against an average of 46 among the 83 providers of this specialty who prescribed in Part D.
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.
William G. Perkins among 337 pediatric critical care medicine physician records in California
William G. Perkins, M.D. is one of 337 pediatric critical care medicine physician records with a practice address in California. 39% 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, 95% newer
- In a Medicare fileYes · 39% of these records are
- In the CMS Doctors and Clinicians fileNo · 28% of these records are
- Record last updated2012 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0203X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Critical Care Medicine Physician providers in California
There are 337 pediatric critical care medicine physician records in California.
All 337 in California → Every provider in Fountain Valley → Pediatric Critical Care Medicine Physician nationwide →
The 8 pediatric critical care medicine physician records with the nearest ZIP codes
- Marco Ayulo, M.D.Fountain Valley, CA 927081942592159
- Natalie Darro, DOFountain Valley, CA 927081083976716
- Alireza Fathi, MDFountain Valley, CA 927081992807523
- Maria Elena Imperial, MDFountain Valley, CA 927081659476984
- Kenneth Kim, M.DFountain Valley, CA 927081922002468
- Kourosh Parsapour, MDFountain Valley, CA 927081922058593
- Anuradha Setlur, M.D.Fountain Valley, CA 927081780035899
- Olivia Shyong, DOFountain Valley, CA 927081972064095
Common questions
What is William G. Perkins, M.D.'s NPI number?
William G. Perkins, M.D.'s National Provider Identifier (NPI) is 1699779181, issued on Jun 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William G. Perkins, M.D. located?
The NPPES record lists a practice address at 17100 Euclid St., Fountain Valley, CA, 92708. Phone: (714) 966-7253. Providers update this record themselves, so call before visiting.
How can I verify William G. Perkins, M.D.'s license?
NPPES lists California license number G41589, 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 G. Perkins, M.D. prescribe under Medicare Part D?
In 2024, William G. Perkins, M.D. had 57 Medicare Part D claims; the average among pediatric critical care medicine physician prescribers was 46. 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.
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.