Karl Tjerandsen, M.D.
NPI 1487077566 · Internal Medicine Physician · Walla Walla, WA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Tjerandsen, M.D. is a Internal Medicine Physician provider in Walla Walla, WA (NPI 1487077566).
Provider details
- NPI number
- 1487077566
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 66833 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 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
927 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 370 | $116 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 212 | $77 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 171 | $112 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 94 | $30 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 31 | $48 |
| Critical Care, First 30-74 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 34 | 13 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 31 | 15 |
| Lisinopril | 26 | — |
| Amlodipine Besylate | 20 | — |
| Atorvastatin Calcium | 18 | 11 |
| Furosemide | 17 | 14 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-01-27
- Last updated
- 2024-05-31
- Certified
- 2024-05-31
Frequently asked questions
- What is Karl Tjerandsen's NPI number?
- Karl Tjerandsen's National Provider Identifier (NPI) is 1487077566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Tjerandsen's specialty?
- Karl Tjerandsen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Tjerandsen located?
- Karl Tjerandsen's practice location on file with NPPES is 401 W Poplar St, Walla Walla, WA 99362-2846.
- What is Karl Tjerandsen's phone number?
- The practice phone number listed in the NPPES registry for Karl Tjerandsen is (509) 897-3320.
- Does Karl Tjerandsen accept Medicare?
- Karl Tjerandsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Tjerandsen's NPI active?
- Yes — Karl Tjerandsen's NPI (1487077566) is active in the NPPES registry as of the last update on 2024-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.