Krystal Vonfeldt, DO
NPI 1114294741 · Family Medicine Physician · Duncan, OK
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Krystal Vonfeldt, DO is a Family Medicine Physician provider in Duncan, OK (NPI 1114294741).
Provider details
- NPI number
- 1114294741
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 5284 (OK)
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
14 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
348 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 | 157 | $114 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 58 | $167 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 52 | $76 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 44 | $108 |
| Critical Care, First 30-74 Minutes99291 | 37 | $195 |
Typical Medicare-allowed amounts for these services range $76–$195 (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 · 152 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 335 | 83 |
| Potassium Chloride | 323 | 79 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 310 | 56 |
| Furosemide | 304 | 75 |
| Atorvastatin Calcium | 304 | 84 |
| Losartan Potassium | 273 | 67 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-11-28
- Last updated
- 2023-03-17
- Certified
- 2023-03-17
Frequently asked questions
- What is Krystal Vonfeldt's NPI number?
- Krystal Vonfeldt's National Provider Identifier (NPI) is 1114294741, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Krystal Vonfeldt's specialty?
- Krystal Vonfeldt is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Krystal Vonfeldt located?
- Krystal Vonfeldt's practice location on file with NPPES is 2120 W Elk Ave, Duncan, OK 73533-1569.
- What is Krystal Vonfeldt's phone number?
- The practice phone number listed in the NPPES registry for Krystal Vonfeldt is (580) 251-6822.
- Does Krystal Vonfeldt accept Medicare?
- Krystal Vonfeldt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Krystal Vonfeldt's NPI active?
- Yes — Krystal Vonfeldt's NPI (1114294741) is active in the NPPES registry as of the last update on 2023-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.