L. Douglas Marsh, M.D.
NPI 1356335046 · General Practice Physician · Vancouver, WA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
L. Douglas Marsh, M.D. is a General Practice Physician provider in Vancouver, WA (NPI 1356335046).
Provider details
- NPI number
- 1356335046
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 31623 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-08
- Last updated
- 2019-01-24
Frequently asked questions
- What is L. Douglas Marsh's NPI number?
- L. Douglas Marsh's National Provider Identifier (NPI) is 1356335046, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is L. Douglas Marsh's specialty?
- L. Douglas Marsh is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is L. Douglas Marsh located?
- L. Douglas Marsh's practice location on file with NPPES is 406 Se 131st Ave, Vancouver, WA 98683-4004.
- What is L. Douglas Marsh's phone number?
- The practice phone number listed in the NPPES registry for L. Douglas Marsh is (360) 253-2822.
- Does L. Douglas Marsh accept Medicare?
- L. Douglas Marsh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is L. Douglas Marsh's NPI active?
- Yes — L. Douglas Marsh's NPI (1356335046) is active in the NPPES registry as of the last update on 2019-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.