Clark Hatheway
NPI 1861955783 · Internal Medicine Physician · Kirkland, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Clark Hatheway is a Internal Medicine Physician provider in Kirkland, WA (NPI 1861955783).
Provider details
- NPI number
- 1861955783
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- MD61263733 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
348 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 115 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 52 | $99 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 45 | $142 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 45 | $17 |
| Admn Sarscov2 Vacc 1 Dose90480 | 29 | $48 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 340 | 116 |
| Amlodipine Besylate | 148 | 49 |
| Lisinopril | 134 | 44 |
| Levothyroxine Sodium | 125 | 48 |
| Losartan Potassium | 94 | 28 |
| Metformin Hclbrand: Metformin Hcl Er | 65 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 1101 Van Ness Ave Ste 1120San Francisco, CA 94109-6919Phone: (415) 600-6000
- 2351 Clay St Ste 380San Francisco, CA 94115-1931Phone: (415) 600-6000
Registry dates
- Enumerated
- 2019-04-08
- Last updated
- 2022-08-05
- Certified
- 2022-08-05
Frequently asked questions
- What is Clark Hatheway's NPI number?
- Clark Hatheway's National Provider Identifier (NPI) is 1861955783, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clark Hatheway's specialty?
- Clark Hatheway is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Clark Hatheway located?
- Clark Hatheway's practice location on file with NPPES is 12910 Totem Lake Blvd Ne Ste 101, Kirkland, WA 98034-2901.
- What is Clark Hatheway's phone number?
- The practice phone number listed in the NPPES registry for Clark Hatheway is (425) 814-5000.
- Does Clark Hatheway accept Medicare?
- Clark Hatheway is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Clark Hatheway's NPI active?
- Yes — Clark Hatheway's NPI (1861955783) is active in the NPPES registry as of the last update on 2022-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.