John Sun, M.D.
NPI 1578664025 · Otolaryngology Physician · Laguna Hills, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Sun, M.D. is a Otolaryngology Physician provider in Laguna Hills, CA (NPI 1578664025).
Provider details
- NPI number
- 1578664025
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- BS6046901 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,687 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) |
|---|---|---|
| Removal of Impacted Ear Wax69210 | 532 | $43 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 270 | $208 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 249 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 237 | $138 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 121 | $120 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 144 | 60 |
| Azelastine Hcl | 95 | 40 |
| Ipratropium Bromide | 83 | 35 |
| Mometasone Furoate | 75 | 54 |
| Montelukast Sodium | 42 | 16 |
| Ofloxacin | 32 | 22 |
| Azithromycin | 29 | 28 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$349 across 17 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
Additional practice locations (1)
- 22 Odyssey Ste 100Irvine, CA 92618-3186Phone: (949) 679-9000Fax: (949) 679-9001
Registry dates
- Enumerated
- 2006-09-26
- Last updated
- 2019-08-16
Frequently asked questions
- What is John Sun's NPI number?
- John Sun's National Provider Identifier (NPI) is 1578664025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sun's specialty?
- John Sun is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is John Sun located?
- John Sun's practice location on file with NPPES is 24411 Health Center Dr Ste 600, Laguna Hills, CA 92653-3687.
- What is John Sun's phone number?
- The practice phone number listed in the NPPES registry for John Sun is (949) 305-8000.
- Does John Sun accept Medicare?
- John Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Sun's NPI active?
- Yes — John Sun's NPI (1578664025) is active in the NPPES registry as of the last update on 2019-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.