Stephen Chan, M.D.
NPI 1568994010 · Otolaryngology Physician · Oxnard, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Chan, M.D. is a Otolaryngology Physician provider in Oxnard, CA (NPI 1568994010).
Provider details
- NPI number
- 1568994010
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A178855 (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
9 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
1,287 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 350 | $97 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 184 | $137 |
| Removal of Impacted Ear Wax69210 | 161 | $50 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 146 | $119 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 122 | $177 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 198 | 98 |
| Omeprazole | 103 | 54 |
| Fluticasone Propionate | 92 | 47 |
| Ipratropium Bromide | 92 | 47 |
| Fluocinolone Acetonide Oil | 75 | 56 |
| Baclofen | 56 | 36 |
| Methylprednisolone | 37 | 36 |
| Azelastine Hcl | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$703 across 14 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)
- 2876 Sycamore Dr Ste 303Simi Valley, CA 93065-1550Phone: (805) 527-7320Fax: (805) 527-2426
Registry dates
- Enumerated
- 2017-04-03
- Last updated
- 2023-11-16
- Certified
- 2023-11-16
Frequently asked questions
- What is Stephen Chan's NPI number?
- Stephen Chan's National Provider Identifier (NPI) is 1568994010, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Chan's specialty?
- Stephen Chan is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Chan located?
- Stephen Chan's practice location on file with NPPES is 1700 N Rose Ave Ste 460, Oxnard, CA 93030-7629.
- What is Stephen Chan's phone number?
- The practice phone number listed in the NPPES registry for Stephen Chan is (805) 983-0395.
- Does Stephen Chan accept Medicare?
- Stephen Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Chan's NPI active?
- Yes — Stephen Chan's NPI (1568994010) is active in the NPPES registry as of the last update on 2023-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.