Justine Buchholz, FNP-BC
NPI 1245874437 · Family Nurse Practitioner · Duarte, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Justine Buchholz, FNP-BC is a Family Nurse Practitioner provider in Duarte, CA (NPI 1245874437).
Provider details
- NPI number
- 1245874437
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95012346 (CA)
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
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
274 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 | 258 | $88 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $59 |
Typical Medicare-allowed amounts for these services range $59–$88 (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 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Acyclovir | 89 | 26 |
| Ruxolitinib Phosphatebrand: Jakafi | 70 | — |
| Potassium Chloride | 63 | 12 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 62 | 13 |
| Posaconazole | 56 | — |
| Pantoprazole Sodium | 41 | 13 |
| Amlodipine Besylate | 27 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$459 across 18 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
Additional practice locations (1)
- 1520 N Mountain Ave Ste 128Ontario, CA 91762-1132Phone: (909) 949-9299
Registry dates
- Enumerated
- 2019-10-31
- Last updated
- 2021-12-21
- Certified
- 2021-12-21
Frequently asked questions
- What is Justine Buchholz's NPI number?
- Justine Buchholz's National Provider Identifier (NPI) is 1245874437, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justine Buchholz's specialty?
- Justine Buchholz is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Justine Buchholz located?
- Justine Buchholz's practice location on file with NPPES is 1500 Duarte Rd, Duarte, CA 91010-3012.
- What is Justine Buchholz's phone number?
- The practice phone number listed in the NPPES registry for Justine Buchholz is (626) 256-4673.
- Does Justine Buchholz accept Medicare?
- Justine Buchholz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Justine Buchholz's NPI active?
- Yes — Justine Buchholz's NPI (1245874437) is active in the NPPES registry as of the last update on 2021-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.