Robert Welsh, PAC
NPI 1518935618 · Physician Assistant · Portland, OR
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Welsh, PAC is a Physician Assistant provider in Portland, OR (NPI 1518935618).
Provider details
- NPI number
- 1518935618
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PAC
- Sex
- Male
- Sole proprietor
- No
- License
- PA00675 (OR)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 56 | 52 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 44 | 41 |
| Celecoxib | 31 | 21 |
| Cephalexin | 27 | 27 |
| Diclofenac Sodiumbrand: Diclofenac Sodium Er | 23 | 15 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 19 | 18 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2009-03-26
Frequently asked questions
- What is Robert Welsh's NPI number?
- Robert Welsh's National Provider Identifier (NPI) is 1518935618, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Welsh's specialty?
- Robert Welsh is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robert Welsh located?
- Robert Welsh's practice location on file with NPPES is 10000 Se Main St, Portland, OR 97216-2448.
- What is Robert Welsh's phone number?
- The practice phone number listed in the NPPES registry for Robert Welsh is (503) 256-5866.
- Does Robert Welsh accept Medicare?
- Robert Welsh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Welsh's NPI active?
- Yes — Robert Welsh's NPI (1518935618) is active in the NPPES registry as of the last update on 2009-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.