Karl Watts, MD
NPI 1578591053 · Family Medicine Physician · Boise, ID
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Watts, MD is a Family Medicine Physician provider in Boise, ID (NPI 1578591053).
Provider details
- NPI number
- 1578591053
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- M5548 (ID)
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
473 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 | 168 | $89 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 152 | $61 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 98 | $119 |
| 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 | 41 | $15 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 14 | $129 |
Typical Medicare-allowed amounts for these services range $15–$129 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 105 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 333 | 111 |
| Atorvastatin Calcium | 242 | 85 |
| Omeprazole | 212 | 66 |
| Amlodipine Besylate | 210 | 67 |
| Simvastatin | 201 | 57 |
| Levothyroxine Sodium | 190 | 66 |
| Losartan Potassium | 151 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-30
- Last updated
- 2016-11-15
Frequently asked questions
- What is Karl Watts's NPI number?
- Karl Watts's National Provider Identifier (NPI) is 1578591053, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Watts's specialty?
- Karl Watts is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Watts located?
- Karl Watts's practice location on file with NPPES is 10255 Overland Rd, Boise, ID 83709-1430.
- What is Karl Watts's phone number?
- The practice phone number listed in the NPPES registry for Karl Watts is (208) 302-5600.
- Does Karl Watts accept Medicare?
- Karl Watts is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Watts's NPI active?
- Yes — Karl Watts's NPI (1578591053) is active in the NPPES registry as of the last update on 2016-11-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.