Nathan Mercer, MD
NPI 1497255178 · Hospitalist Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Mercer, MD is a Hospitalist Physician provider in Seattle, WA (NPI 1497255178).
Provider details
- NPI number
- 1497255178
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD61552788 (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
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 9040 Jackson AveJoint Base Lewis Mcchord, WA 98431-0001Phone: (253) 968-2462Fax: (253) 968-2972
Registry dates
- Enumerated
- 2018-02-19
- Last updated
- 2025-08-07
- Certified
- 2025-08-07
Frequently asked questions
- What is Nathan Mercer's NPI number?
- Nathan Mercer's National Provider Identifier (NPI) is 1497255178, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Mercer's specialty?
- Nathan Mercer is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Mercer located?
- Nathan Mercer's practice location on file with NPPES is 925 Seneca St, Seattle, WA 98101-2742.
- What is Nathan Mercer's phone number?
- The practice phone number listed in the NPPES registry for Nathan Mercer is (206) 625-7373.
- Does Nathan Mercer accept Medicare?
- Nathan Mercer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Mercer's NPI active?
- Yes — Nathan Mercer's NPI (1497255178) is active in the NPPES registry as of the last update on 2025-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.