John Zamarra, M.D.
NPI 1518052489 · Cardiovascular Disease Physician · Laguna Beach, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Zamarra, M.D. is a Cardiovascular Disease Physician provider in Laguna Beach, CA (NPI 1518052489).
Provider details
- NPI number
- 1518052489
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G37204 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
574 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 411 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 93 | $65 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 25 | $67 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 19 | $34 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 13 | $21 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 71 | 37 |
| Apixabanbrand: Eliquis | 64 | 26 |
| Atorvastatin Calcium | 52 | 32 |
| Empagliflozinbrand: Jardiance | 45 | 23 |
| Carvedilol | 44 | 17 |
| Sacubitril/Valsartanbrand: Entresto | 44 | 31 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$41 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-04
- Last updated
- 2024-07-01
- Certified
- 2024-07-01
Frequently asked questions
- What is John Zamarra's NPI number?
- John Zamarra's National Provider Identifier (NPI) is 1518052489, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Zamarra's specialty?
- John Zamarra is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is John Zamarra located?
- John Zamarra's practice location on file with NPPES is 1750 S Coast Hwy Apt 13, Laguna Beach, CA 92651-3258.
- What is John Zamarra's phone number?
- The practice phone number listed in the NPPES registry for John Zamarra is (949) 575-7537.
- Does John Zamarra accept Medicare?
- John Zamarra is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Zamarra's NPI active?
- Yes — John Zamarra's NPI (1518052489) is active in the NPPES registry as of the last update on 2024-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.