Jeffrey Tseng, M.D.
NPI 1205990868 · Otolaryngology Physician · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeffrey Tseng, M.D. is a Otolaryngology Physician provider in Thousand Oaks, CA (NPI 1205990868).
Provider details
- NPI number
- 1205990868
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 47283-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2,587 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 783 | $86 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 621 | $121 |
| Removal of Impacted Ear Wax69210 | 471 | $45 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 263 | $185 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 173 | $104 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 139 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ipratropium Bromide | 232 | 105 |
| Azelastine Hcl | 105 | 47 |
| Fluticasone Propionate | 86 | 38 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 74 | 70 |
| Azithromycin | 57 | 53 |
| Omeprazole | 50 | 21 |
| Methylprednisolone | 43 | 38 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-20
- Last updated
- 2009-11-20
Frequently asked questions
- What is Jeffrey Tseng's NPI number?
- Jeffrey Tseng's National Provider Identifier (NPI) is 1205990868, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Tseng's specialty?
- Jeffrey Tseng is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Jeffrey Tseng located?
- Jeffrey Tseng's practice location on file with NPPES is 2220 Lynn Rd, Thousand Oaks, CA 91360-1904.
- What is Jeffrey Tseng's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Tseng is (805) 496-8103.
- Does Jeffrey Tseng accept Medicare?
- Jeffrey Tseng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeffrey Tseng's NPI active?
- Yes — Jeffrey Tseng's NPI (1205990868) is active in the NPPES registry as of the last update on 2009-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.