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Nicholas Diacou, DO
NPI 1558105163 · General Practice Physician · Tacoma, WA
Nicholas Diacou, DO is a General Practice Physician provider in Tacoma, WA (NPI 1558105163).
Provider details
- NPI number
- 1558105163
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 3136 (NE)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(56/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
9040 Jackson Ave
Tacoma, WA 98431-5001
Phone: (253) 968-2462
Fax: (253) 968-2972
Street-level locationGet directions
Mailing address
9040 Jackson Ave
Tacoma, WA 98431-5001
Registry dates
- Enumerated
- 2024-06-20
- Last updated
- 2026-04-10
- Certified
- 2026-04-10
Frequently asked questions
- What is Nicholas Diacou's NPI number?
- Nicholas Diacou's National Provider Identifier (NPI) is 1558105163, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Diacou's specialty?
- Nicholas Diacou is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Diacou located?
- Nicholas Diacou's practice location on file with NPPES is 9040 Jackson Ave, Tacoma, WA 98431-5001.
- What is Nicholas Diacou's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Diacou is (253) 968-2462.
- Is Nicholas Diacou's NPI active?
- Yes — Nicholas Diacou's NPI (1558105163) is active in the NPPES registry as of the last update on 2026-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.