Mark Ralston, M.D.
NPI 1669451373 · Pediatrics Physician · Oak Harbor, WA
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Ralston, M.D. is a Pediatrics Physician provider in Oak Harbor, WA (NPI 1669451373).
Provider details
- NPI number
- 1669451373
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 23540 (WA)
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
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
- 2006-01-11
- Last updated
- 2023-09-22
- Certified
- 2023-09-22
Frequently asked questions
- What is Mark Ralston's NPI number?
- Mark Ralston's National Provider Identifier (NPI) is 1669451373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Ralston's specialty?
- Mark Ralston is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Ralston located?
- Mark Ralston's practice location on file with NPPES is Naval Health Clinic Oak Harbor 3475 N Saratoga St, Oak Harbor, WA 98278-8800.
- What is Mark Ralston's phone number?
- The practice phone number listed in the NPPES registry for Mark Ralston is (360) 257-9782.
- Does Mark Ralston accept Medicare?
- Mark Ralston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Ralston's NPI active?
- Yes — Mark Ralston's NPI (1669451373) is active in the NPPES registry as of the last update on 2023-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.