Wijan Prapong, M.D.
NPI 1184804437 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wijan Prapong, M.D. is a Internal Medicine Physician provider in Portland, OR (NPI 1184804437).
Provider details
- NPI number
- 1184804437
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A101420 (CA)
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 tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 160 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 538 | 64 |
| Atorvastatin Calcium | 446 | 134 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 338 | 67 |
| Amlodipine Besylate | 325 | 97 |
| Lisinopril | 290 | 89 |
| Rosuvastatin Calcium | 285 | 86 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-11-04
- Last updated
- 2009-08-19
Frequently asked questions
- What is Wijan Prapong's NPI number?
- Wijan Prapong's National Provider Identifier (NPI) is 1184804437, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wijan Prapong's specialty?
- Wijan Prapong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Wijan Prapong located?
- Wijan Prapong's practice location on file with NPPES is 19500 Se Stark St, Portland, OR 97233-5757.
- What is Wijan Prapong's phone number?
- The practice phone number listed in the NPPES registry for Wijan Prapong is (503) 669-3900.
- Does Wijan Prapong accept Medicare?
- Wijan Prapong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wijan Prapong's NPI active?
- Yes — Wijan Prapong's NPI (1184804437) is active in the NPPES registry as of the last update on 2009-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.