Ken Iwaoka, MD
NPI 1346263670 · Family Medicine Physician · Vista, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ken Iwaoka, MD is a Family Medicine Physician provider in Vista, CA (NPI 1346263670).
Provider details
- NPI number
- 1346263670
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A48630 (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
510 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 | 180 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 107 | $136 |
| Amplifed Dna Or Rna Probe Detection of Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19) Antigen87635 | 58 | $49 |
| Automated Urinalysis Test81003 | 51 | $2 |
| Inhalation Treatment for Airway Obstruction Or Sputum Production94640 | 26 | $9 |
| 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 93 | 88 |
| Doxycycline Hyclate | 47 | 46 |
| Prednisone | 39 | 37 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 37 | 31 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 31 | 31 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 27 | 27 |
| Cephalexin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-26
- Last updated
- 2013-04-05
Frequently asked questions
- What is Ken Iwaoka's NPI number?
- Ken Iwaoka's National Provider Identifier (NPI) is 1346263670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ken Iwaoka's specialty?
- Ken Iwaoka is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ken Iwaoka located?
- Ken Iwaoka's practice location on file with NPPES is 130 Cedar Rd, Vista, CA 92083-5102.
- What is Ken Iwaoka's phone number?
- The practice phone number listed in the NPPES registry for Ken Iwaoka is (760) 806-5400.
- Does Ken Iwaoka accept Medicare?
- Ken Iwaoka is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ken Iwaoka's NPI active?
- Yes — Ken Iwaoka's NPI (1346263670) is active in the NPPES registry as of the last update on 2013-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.