Tim Arakawa, MD, PHD
NPI 1841421229 · Endocrinology, Diabetes & Metabolism Physician · Corvallis, OR
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tim Arakawa, MD, PHD is a Endocrinology, Diabetes & Metabolism Physician provider in Corvallis, OR (NPI 1841421229).
Provider details
- NPI number
- 1841421229
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- M-1876 (GU)
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 tenure25% of score
16 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
495 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 133 | $93 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 131 | $16 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 54 | $33 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 54 | $138 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $119 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 319 | 70 |
| Empagliflozinbrand: Jardiance | 61 | 12 |
| Levothyroxine Sodiumbrand: Synthroid | 59 | 12 |
| Methimazole | 58 | 14 |
| Insulin Pump Cart,auto,bt,g6/7brand: Omnipod 5 Dexg7g6 Pods (gen 5) | 55 | — |
| Hydrocortisone | 46 | 11 |
| Tirzepatide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$81 across 4 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)
- 388 Ypao RdTamuning, GU 96913Phone: (671) 777-0696
Registry dates
- Enumerated
- 2009-08-03
- Last updated
- 2020-11-04
- Certified
- 2020-11-04
Frequently asked questions
- What is Tim Arakawa's NPI number?
- Tim Arakawa's National Provider Identifier (NPI) is 1841421229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tim Arakawa's specialty?
- Tim Arakawa is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Tim Arakawa located?
- Tim Arakawa's practice location on file with NPPES is 3615 Nw Samaritan Dr Ste G2, Corvallis, OR 97330-3783.
- What is Tim Arakawa's phone number?
- The practice phone number listed in the NPPES registry for Tim Arakawa is (541) 768-7900.
- Does Tim Arakawa accept Medicare?
- Tim Arakawa is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tim Arakawa's NPI active?
- Yes — Tim Arakawa's NPI (1841421229) is active in the NPPES registry as of the last update on 2020-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.