Karl Northrup, DDS
NPI 1598918369 · General Practice Dentistry · Spokane, WA
Karl Northrup, DDS is a General Practice Dentistry provider in Spokane, WA (NPI 1598918369).
Provider details
- NPI number
- 1598918369
- Entity type
- Individual
- Primary specialty
- General Practice DentistryDental Providers
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- Yes
- License
- DE60053871 (WA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin | 39 | 33 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 304 6th StCoulee Dam, WA 99116-1335Phone: (509) 633-0700Fax: (509) 633-3063
Registry dates
- Enumerated
- 2008-10-24
- Last updated
- 2020-03-05
- Certified
- 2020-03-05
Frequently asked questions
- What is Karl Northrup's NPI number?
- Karl Northrup's National Provider Identifier (NPI) is 1598918369, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Northrup's specialty?
- Karl Northrup is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
- Where is Karl Northrup located?
- Karl Northrup's practice location on file with NPPES is 3143 E 29th Ave, Spokane, WA 99223-4815.
- What is Karl Northrup's phone number?
- The practice phone number listed in the NPPES registry for Karl Northrup is (509) 389-9092.
- Is Karl Northrup's NPI active?
- Yes — Karl Northrup's NPI (1598918369) is active in the NPPES registry as of the last update on 2020-03-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.