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DR. JOHN WILLIAM MCNEIL II M.D.
NPI 1003340126
Emergency Medicine in Merced, CA

Active since April 14, 2017PECOS EnrolledAccepts Medicare Assignment
333 MERCY AVE, MERCED, CA 95340(209) 564-5000 Get Directions Write a Review

NPPES record last updated: August 4, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 4, 2025, Feb 12, 2025, Dec 29, 2021 and 2 more (5 updates tracked since 2017).

About Dr. John William Mcneil Ii M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOHN WILLIAM MCNEIL II M.D. (NPI 1003340126) is an individual emergency medicine provider in Merced, California, licensed in California (A161553) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with Cox Medical Centers, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1003340126
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. JOHN WILLIAM MCNEIL IICredential: M.D.
Location Address333 MERCY AVEMerced, CA 95340-8319
Mailing Address340 S Lemon Ave # 6518Walnut, CA 91789-2706 · (310) 702-3639
Phone(209) 564-5000
Sole ProprietorNo
Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2015
Enumeration DateApril 14, 2017
Last NPPES UpdateAugust 4, 20255 updates tracked since enumeration
NPPES CertifiedAugust 4, 2025
✔ NPI 1003340126 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A161553
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedFamily MedicineTaxonomy 207Q00000X · License 2025002188 (MO)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
333 MERCY AVE, Merced, CA 95340
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11722 Clarkson RdChesterfield, MO 63017-4976 · Phone (636) 206-2665 · Fax (636) 206-2664
Location 21000 E Primrose St Ste 170Springfield, MO 65807-5192 · Phone (417) 269-9853

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. John William Mcneil Ii M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7214355643
PECOS Enrollment IDI20211222000955, I20250219002486
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
150 services145 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
129 services120 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
80 services79 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
55 services54 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
30 services30 patients
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen 87635
This is a lab test that detects the presence of COVID-19 in your body. It uses a technique to amplify the virus's genetic material, either DNA or RNA, making it easier to identify. A positive result indicates an active infection.
24 services24 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Cox Medical Centers

Acute Care Hospitals · Springfield, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260040
Location3801 South National AvenueSpringfield, MO 65807 · Greene County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95340 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$90.32 typical visit price
range $58.87 – $176.60
Typical copayment $22.58 (range $14.71 – $44.15)
Most-billed visit code 99203
Established Patient
$103.36 typical visit price
range $19.28 – $144.60
Typical copayment $25.84 (range $4.82 – $36.15)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALOK SHUKLA M.D.
Anesthesiology
333 MERCY AVE
MERCED, CA 95340
Merced County (209) 564-5000
MA LOVELY BATASIN DO
Emergency Medicine
333 MERCY AVE
MERCED, CA 95340
Merced County (209) 564-5000
JACOB GERALD
Physician Assistant
333 MERCY AVE
MERCED, CA 95340
Merced County (209) 564-5000
MRS. CECILIA JEANNY JANG PA-C
Physician Assistant (Medical)
333 MERCY AVE, EMERGENCY DEPARTMENT
MERCED, CA 95340
Merced County (209) 564-5153
OMAR SOHA
Family Medicine
333 MERCY AVE
MERCED, CA 95340
Merced County (209) 564-3500
DR. ANAHIT PETROSYAN M.D.
Student in an Organized Health Care Education/Training Program
333 MERCY AVE
MERCED, CA 95340
Merced County (209) 564-5000
MRS. ADAOBI JULIET OKECHUKWU MD
Student in an Organized Health Care Education/Training Program
333 MERCY AVE
MERCED, CA 95340
Merced County (209) 564-5000
MS. DAISEY CRUZ PA
Physician Assistant
333 MERCY AVE
MERCED, CA 95340
Merced County (209) 564-5000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Mcneil's NPI number?

The NPI number for John Mcneil is 1003340126. It was assigned to this individual provider in the NPPES registry on April 14, 2017.

Where is John Mcneil located?

John Mcneil practices at 333 Mercy Ave, Merced, CA 95340. The listed phone number is (209) 564-5000.

What is John Mcneil's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is John Mcneil enrolled in Medicare?

Yes. John Mcneil is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is John Mcneil affiliated with any hospitals?

According to CMS data, John Mcneil is affiliated with Cox Medical Centers.

When was this NPI record last updated?

The NPPES record for John Mcneil was last updated on August 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.