John Zambetti, M.D.
NPI 1275639379 · Emergency Medicine Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Zambetti, M.D. is a Emergency Medicine Physician provider in Lancaster, CA (NPI 1275639379).
Provider details
- NPI number
- 1275639379
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G33362 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
242 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 46 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $98 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 26 | $120 |
| Urinalysis, Manual Test81002 | 24 | $3 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 19 | $16 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-15
- Last updated
- 2011-04-15
Frequently asked questions
- What is John Zambetti's NPI number?
- John Zambetti's National Provider Identifier (NPI) is 1275639379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Zambetti's specialty?
- John Zambetti is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Zambetti located?
- John Zambetti's practice location on file with NPPES is 43839 15th St W, Lancaster, CA 93534-4756.
- What is John Zambetti's phone number?
- The practice phone number listed in the NPPES registry for John Zambetti is (661) 945-5984.
- Does John Zambetti accept Medicare?
- John Zambetti is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Zambetti's NPI active?
- Yes — John Zambetti's NPI (1275639379) is active in the NPPES registry as of the last update on 2011-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.