Ann Knowles, M.D.
NPI 1669404562 · Family Medicine Physician · Everett, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ann Knowles, M.D. is a Family Medicine Physician provider in Everett, WA (NPI 1669404562).
Provider details
- NPI number
- 1669404562
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD00035979 (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
642 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 149 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 126 | $89 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 55 | $8 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 51 | $3 |
| Bacterial Colony Count, Urine87086 | 40 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 34 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 177 | 160 |
| Doxycycline Hyclate | 104 | 102 |
| Cephalexin | 54 | 52 |
| Meloxicam | 48 | 32 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 46 | 46 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 40 | 33 |
| Fluconazole | 29 | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-07
- Last updated
- 2014-06-13
Frequently asked questions
- What is Ann Knowles's NPI number?
- Ann Knowles's National Provider Identifier (NPI) is 1669404562, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Knowles's specialty?
- Ann Knowles is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ann Knowles located?
- Ann Knowles's practice location on file with NPPES is 3927 Rucker Ave, Everett, WA 98201-4833.
- What is Ann Knowles's phone number?
- The practice phone number listed in the NPPES registry for Ann Knowles is (425) 339-5442.
- Does Ann Knowles accept Medicare?
- Ann Knowles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ann Knowles's NPI active?
- Yes — Ann Knowles's NPI (1669404562) is active in the NPPES registry as of the last update on 2014-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.