Shawn Slack, MD
NPI 1306853239 · Rheumatology Physician · Everett, WA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shawn Slack, MD is a Rheumatology Physician provider in Everett, WA (NPI 1306853239).
Provider details
- NPI number
- 1306853239
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD00032937 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,316 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 448 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 444 | $7 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 366 | $8 |
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation86140 | 333 | $5 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 298 | $124 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 515 | 131 |
| Hydroxychloroquine Sulfate | 406 | 113 |
| Methotrexate Sodiumbrand: Methotrexate | 286 | 98 |
| Folic Acid | 105 | 35 |
| Alendronate Sodium | 98 | 31 |
| Allopurinol | 75 | 24 |
| Etanerceptbrand: Enbrel | 69 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2026-05-14
- Certified
- 2026-05-14
Frequently asked questions
- What is Shawn Slack's NPI number?
- Shawn Slack's National Provider Identifier (NPI) is 1306853239, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shawn Slack's specialty?
- Shawn Slack is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Shawn Slack located?
- Shawn Slack's practice location on file with NPPES is 3901 Hoyt Ave, Everett, WA 98201-4918.
- What is Shawn Slack's phone number?
- The practice phone number listed in the NPPES registry for Shawn Slack is (425) 259-0966.
- Does Shawn Slack accept Medicare?
- Shawn Slack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shawn Slack's NPI active?
- Yes — Shawn Slack's NPI (1306853239) is active in the NPPES registry as of the last update on 2026-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.