Katherine Grubbs Diefenderfer, NP
Nurse Practitioner · Richmond, VA
Katherine Grubbs Diefenderfer, NP is a nurse practitioner with a practice address in Richmond, Virginia, and NPI 1730263807, issued on Oct 25, 2006. Check the license (Virginia 0024166667, as entered in NPPES) with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Grubbs Diefenderfer
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 0024166667 VA
Self-reported in NPPES; status is on the state search - Practice location
- 7001 Forest Ave, Richmond, VA 23230
- Phone
- (804) 288-0808
- Enumerated
- Oct 25, 2006
- Record last updated
- Nov 2, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (804) 288-8887
- Medicaid ID
- 010207100 VA
- Entity
- Type 1 · individual
Also registered at 7001 Forest Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Binshtok, ACNP-BCAcute Care Nurse Practitioner1962711721
- Patricia Burkwall, M.D.Internal Medicine Physician1225016553
- Robin Disler, MDInternal Medicine Physician1366404493
- Jennifer Ferguson, MDInternal Medicine Physician1326010919
- Galen Fisher, MDMOHS-Micrographic Surgery Physician1144282591
- Massimo Giusti, MDSpecialist1720011398
Verify Katherine Grubbs Diefenderfer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this profession
Search for license 0024166667Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% more Medicare Part D claims than the average nurse practitioner in 2024
1,667 Medicare Part D claims for 433 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Furosemide156 claims
- Metoprolol Succinate143 claims
- Amlodipine Besylate113 claims
- Rosuvastatin Calcium111 claims
- Valsartan102 claims
- Eliquis99 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $451.46
10 payments; by number, the most common kind was food and beverage; the largest payer was Impulse Dynamics (USA) Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
190 nurse practitioner records list a practice address in Richmond
They are 190 of the 14,083 NPPES records with a practice address in Richmond, and 1,721 nurse practitioner records in Virginia.
All 190 in Richmond → All 1,721 in Virginia → Every provider in Richmond →
Other nurse practitioner records in Virginia
- Farideh AbbasiFairfax, VA1326220047
- Omar Abdel RazzaqMidlothian, VA1174300396
- Tsion AbebeFort Belvoir, VA1457902736
- Lindley Abernathy, NP-CRichmond, VA1588285662
- Flordeliza Ablao-Chanthavichith, N.P.Portsmouth, VA1003968884
- Ralph Ablaseau, NP-CWilliamsburg, VA1982869715
- Theresa Abrahamson, APRNWoodbridge, VA1245702794
- Elizabeth Achin, CRNAAlexandria, VA1760722631
- Ganiyu AdewaleFalls Church, VA1992258628
- Margaret Adeyeri, AGNP-CAlexandria, VA1932869690
Common questions
What is Katherine Grubbs Diefenderfer, NP's NPI number?
Katherine Grubbs Diefenderfer, NP's National Provider Identifier (NPI) is 1730263807, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Grubbs Diefenderfer, NP located?
The NPPES record lists a practice address at 7001 Forest Ave, Richmond, VA, 23230. Phone: (804) 288-0808. Providers update this record themselves, so call before visiting.
How can I verify Katherine Grubbs Diefenderfer, NP's license?
NPPES lists Virginia license number 0024166667, as entered by the provider. Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Grubbs Diefenderfer, NP prescribe under Medicare Part D?
In 2024, Katherine Grubbs Diefenderfer, NP had 1,667 Medicare Part D claims for 433 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.