John Mcneil, M.D.
NPI 1003340126 · Emergency Medicine Physician · Merced, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Mcneil, M.D. is a Emergency Medicine Physician provider in Merced, CA (NPI 1003340126).
Provider details
- NPI number
- 1003340126
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2025002188 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
533 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 150 | $163 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 129 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 80 | $98 |
| Critical Care, First 30-74 Minutes99291 | 55 | $206 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 30 | $117 |
| Amplifed Dna Or Rna Probe Detection of Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19) Antigen87635 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 29 | 29 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Azithromycin | 17 | 17 |
| Fluticasone Propionate | 16 | 16 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 15 | 15 |
| Prednisone | 15 | 15 |
| Ibuprofen | 13 | 13 |
Practice location
Mailing address
Additional practice locations (2)
- 1722 Clarkson RdChesterfield, MO 63017-4976Phone: (636) 206-2665Fax: (636) 206-2664
- 1000 E Primrose St Ste 170Springfield, MO 65807-5192Phone: (417) 269-9853
Registry dates
- Enumerated
- 2017-04-14
- Last updated
- 2025-08-04
- Certified
- 2025-08-04
Frequently asked questions
- What is John Mcneil's NPI number?
- John Mcneil's National Provider Identifier (NPI) is 1003340126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mcneil's specialty?
- John Mcneil is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Mcneil located?
- John Mcneil's practice location on file with NPPES is 333 Mercy Ave, Merced, CA 95340-8319.
- What is John Mcneil's phone number?
- The practice phone number listed in the NPPES registry for John Mcneil is (209) 564-5000.
- Does John Mcneil accept Medicare?
- John Mcneil is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Mcneil's NPI active?
- Yes — John Mcneil's NPI (1003340126) is active in the NPPES registry as of the last update on 2025-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.