Hiroyuki Oya, MD
NPI 1689667701 · Neurological Surgery Physician · Iowa City, IA
Hiroyuki Oya, MD is a Neurological Surgery Physician provider in Iowa City, IA (NPI 1689667701).
Provider details
- NPI number
- 1689667701
- Entity type
- Individual
- Primary specialty
- Neurological Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- SP168 (IA)
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
20 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
309 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) |
|---|---|---|
| Fusion of Additional Segment of Spine22614 | 62 | $337 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 61 | $59 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 56 | $86 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 52 | $121 |
| Insertion of Cage Or Mesh Device to Spine Bone and Disc Space During Spine Fusion22853 | 18 | $222 |
| Placement of Stabilizing Device to Back, 3-6 Spine Bone Segments22842 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-24
- Last updated
- 2009-10-06
Frequently asked questions
- What is Hiroyuki Oya's NPI number?
- Hiroyuki Oya's National Provider Identifier (NPI) is 1689667701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hiroyuki Oya's specialty?
- Hiroyuki Oya is listed in the NPPES registry with a primary specialty of Neurological Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Hiroyuki Oya located?
- Hiroyuki Oya's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is Hiroyuki Oya's phone number?
- The practice phone number listed in the NPPES registry for Hiroyuki Oya is (319) 353-8452.
- Is Hiroyuki Oya's NPI active?
- Yes — Hiroyuki Oya's NPI (1689667701) is active in the NPPES registry as of the last update on 2009-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.