Katherine Diefenderfer, NP
NPI 1730263807 · Nurse Practitioner · Richmond, VA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Diefenderfer, NP is a Nurse Practitioner provider in Richmond, VA (NPI 1730263807).
Provider details
- NPI number
- 1730263807
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 0024166667 (VA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
498 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 334 | $89 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 74 | $7 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 55 | $128 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 35 | $12 |
Typical Medicare-allowed amounts for these services range $7–$128 (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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 156 | 71 |
| Metoprolol Succinate | 143 | 75 |
| Amlodipine Besylate | 113 | 54 |
| Rosuvastatin Calcium | 111 | 46 |
| Valsartan | 102 | 44 |
| Apixabanbrand: Eliquis | 99 | 36 |
| Atorvastatin Calcium | 93 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$451 across 10 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2012-11-02
Frequently asked questions
- What is Katherine Diefenderfer's NPI number?
- Katherine Diefenderfer's National Provider Identifier (NPI) is 1730263807, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Diefenderfer's specialty?
- Katherine Diefenderfer is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Diefenderfer located?
- Katherine Diefenderfer's practice location on file with NPPES is 7001 Forest Ave, Richmond, VA 23230-1726.
- What is Katherine Diefenderfer's phone number?
- The practice phone number listed in the NPPES registry for Katherine Diefenderfer is (804) 288-0808.
- Does Katherine Diefenderfer accept Medicare?
- Katherine Diefenderfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Diefenderfer's NPI active?
- Yes — Katherine Diefenderfer's NPI (1730263807) is active in the NPPES registry as of the last update on 2012-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.