John William McNeil, M.D.
Emergency Medicine Physician · Merced, CA
John William McNeil, M.D. is an emergency medicine physician with a practice address in Merced, California, and NPI 1003340126, issued on Apr 14, 2017. Check the license (California A161553, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John William McNeil
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- A161553 CA
2025002188 MO
Self-reported in NPPES; status is on the state search - Practice location
- 333 Mercy Ave, Merced, CA 95340
- Phone
- (209) 564-5000
- Enumerated
- Apr 14, 2017
- Record last updated
- Aug 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20211222000955); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 333 Mercy Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Calbeth Alaribe, PA-CMedical Physician Assistant1891377081
- Itzel Angulo, MDStudent in an Organized Health Care Education/Training Program1538962147
- Jason Antunez, M.D.Emergency Medicine Physician1578852877
- Jaswinder Barn, DNP/FNP/PMHNPFamily Nurse Practitioner1306331699
- Ma Lovely Batasin, DOEmergency Medicine Physician1023579000
- Ashley Brauchler, PA-CPhysician Assistant1578301396
Verify John William McNeil in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A161553Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% more Medicare Part D claims than the average emergency medicine physician in 2024
328 Medicare Part D claims for 216 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 21 claims were for opioids.
Most prescribed
- Cephalexin29 claims
- Amoxicillin-Clavulanate Potass27 claims
- Azithromycin17 claims
- Fluticasone Propionate16 claims
- Nitrofurantoin Mono-Macro15 claims
- Prednisone15 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 4 group practices
- Hmts IncTustin, CA
- Lester E Cox Medical CentersSpringfield, MO
- Mercy East Ambulatory Services LLCChesterfield, MO
- Mercy Southern Missouri Ambulatory Services LLCSpringfield, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John William McNeil among 7,751 emergency medicine physician records in California
John William McNeil, 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 2017, is newer than 78% of them.
- NPI issued2017 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2015 · median 2011 among the 4,560 with a school on file
- Record last updated2025 · 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 Merced → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jason Antunez, M.D.Merced, CA 953401578852877
- Stephen Backman, D.O.Merced, CA 953401144250721
- Ma Lovely Batasin, DOMerced, CA 953401023579000
- Yorai Benzeevi, MDMerced, CA 953401760428577
- Laura Fletcher, M.D.Merced, CA 953401275562597
- James HardyMerced, CA 953401144332560
- Fatoumata Lelenta, M.D.Merced, CA 953401619269974
- John Ludlow, M.D.Merced, CA 953401154615391
Common questions
What is John William McNeil, M.D.'s NPI number?
John William McNeil, M.D.'s National Provider Identifier (NPI) is 1003340126, issued on Apr 14, 2017. An NPI identifies a provider in billing; it is not a license.
Where is John William McNeil, M.D. located?
The NPPES record lists a practice address at 333 Mercy Ave, Merced, CA, 95340. Phone: (209) 564-5000. Providers update this record themselves, so call before visiting.
How can I verify John William McNeil, M.D.'s license?
NPPES lists California license number A161553, 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 John William McNeil, M.D. prescribe under Medicare Part D?
In 2024, John William McNeil, M.D. had 328 Medicare Part D claims for 216 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.
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.