Karen Spahr, DO
NPI 1194891374 · Internal Medicine Physician · Oskaloosa, IA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Spahr, DO is a Internal Medicine Physician provider in Oskaloosa, IA (NPI 1194891374).
Provider details
- NPI number
- 1194891374
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 02695 (IA)
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
852 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 | 430 | $119 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 315 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $84 |
| Administration of Influenza Virus VaccineG0008 | 36 | $25 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 26 | $13 |
Typical Medicare-allowed amounts for these services range $9–$119 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 119 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 326 | 51 |
| Atorvastatin Calcium | 310 | 77 |
| Losartan Potassium | 306 | 81 |
| Levothyroxine Sodium | 299 | 56 |
| Metformin Hcl | 246 | 58 |
| Amlodipine Besylate | 202 | 55 |
| Furosemide | 196 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Karen Spahr's NPI number?
- Karen Spahr's National Provider Identifier (NPI) is 1194891374, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Spahr's specialty?
- Karen Spahr is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Spahr located?
- Karen Spahr's practice location on file with NPPES is 1203 a Ave East, Oskaloosa, IA 52577.
- What is Karen Spahr's phone number?
- The practice phone number listed in the NPPES registry for Karen Spahr is (641) 672-9930.
- Does Karen Spahr accept Medicare?
- Karen Spahr is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Spahr's NPI active?
- Yes — Karen Spahr's NPI (1194891374) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.