Kathlyn Diefenderfer, MD
NPI 1780606426 · Internal Medicine Physician · Enterprise, AL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathlyn Diefenderfer, MD is a Internal Medicine Physician provider in Enterprise, AL (NPI 1780606426).
Provider details
- NPI number
- 1780606426
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 00023919 (AL)
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
397 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 | 161 | $108 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 123 | $154 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 113 | $103 |
Typical Medicare-allowed amounts for these services range $103–$154 (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 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levofloxacin | 92 | 90 |
| Furosemide | 57 | 22 |
| Prednisone | 37 | 33 |
| Potassium Chloride | 28 | 15 |
| Cefdinir | 25 | 25 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 24 | — |
| Gabapentin | 23 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-24
- Last updated
- 2007-11-09
Frequently asked questions
- What is Kathlyn Diefenderfer's NPI number?
- Kathlyn Diefenderfer's National Provider Identifier (NPI) is 1780606426, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathlyn Diefenderfer's specialty?
- Kathlyn Diefenderfer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kathlyn Diefenderfer located?
- Kathlyn Diefenderfer's practice location on file with NPPES is 101 Professional Ln, Enterprise, AL 36330-2085.
- What is Kathlyn Diefenderfer's phone number?
- The practice phone number listed in the NPPES registry for Kathlyn Diefenderfer is (334) 347-3404.
- Does Kathlyn Diefenderfer accept Medicare?
- Kathlyn Diefenderfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathlyn Diefenderfer's NPI active?
- Yes — Kathlyn Diefenderfer's NPI (1780606426) is active in the NPPES registry as of the last update on 2007-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.