Lois Alderfer, N.P.
NPI 1194703876 · Family Nurse Practitioner · Arrington, VA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lois Alderfer, N.P. is a Family Nurse Practitioner provider in Arrington, VA (NPI 1194703876).
Provider details
- NPI number
- 1194703876
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 0024104630 (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
20 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
40 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) |
|---|---|---|
| Urinalysis, Manual Test81002 | 27 | $3 |
| Hemoglobin A1c Level83036 | 13 | $10 |
Typical Medicare-allowed amounts for these services range $3–$10 (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 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 152 | 43 |
| Atorvastatin Calcium | 150 | 41 |
| Rsv Vacc, Pref a and Pref B/Pfbrand: Abrysvo | 130 | 130 |
| Varicella-Zoster Ge/As01b/Pfbrand: Shingrix | 127 | 90 |
| Lisinopril | 119 | 29 |
| Levothyroxine Sodium | 112 | 30 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$275 across 14 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
- 2006-01-04
- Last updated
- 2025-05-28
- Certified
- 2025-05-28
Frequently asked questions
- What is Lois Alderfer's NPI number?
- Lois Alderfer's National Provider Identifier (NPI) is 1194703876, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lois Alderfer's specialty?
- Lois Alderfer is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lois Alderfer located?
- Lois Alderfer's practice location on file with NPPES is 4038 Thomas Nelson Hwy, Arrington, VA 22922-2302.
- What is Lois Alderfer's phone number?
- The practice phone number listed in the NPPES registry for Lois Alderfer is (434) 263-4000.
- Does Lois Alderfer accept Medicare?
- Lois Alderfer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lois Alderfer's NPI active?
- Yes — Lois Alderfer's NPI (1194703876) is active in the NPPES registry as of the last update on 2025-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.