Sarah Buenviaje, M.S.N., O.N.P.
NPI 1588716971 · Nurse Practitioner · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Buenviaje, M.S.N., O.N.P. is a Nurse Practitioner provider in Walnut Creek, CA (NPI 1588716971).
Provider details
- NPI number
- 1588716971
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- M.S.N., O.N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 483356 (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
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
813 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 | 363 | $98 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 325 | $147 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 73 | $65 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 34 | $16 |
| Biopsy and Aspiration of Bone Marrow Sample for Diagnosis38222 | 18 | $71 |
Typical Medicare-allowed amounts for these services range $16–$147 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 96 | 45 |
| Lenalidomide | 73 | 31 |
| Letrozole | 61 | 24 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 61 | 39 |
| Lenalidomidebrand: Revlimid | 59 | 20 |
| Pomalidomidebrand: Pomalyst | 58 | 16 |
| Acyclovir | 54 | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,764 across 62 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
- 2007-01-17
- Last updated
- 2025-07-17
- Certified
- 2025-07-17
Frequently asked questions
- What is Sarah Buenviaje's NPI number?
- Sarah Buenviaje's National Provider Identifier (NPI) is 1588716971, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Buenviaje's specialty?
- Sarah Buenviaje is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sarah Buenviaje located?
- Sarah Buenviaje's practice location on file with NPPES is 177 La Casa Via Ste 390, Walnut Creek, CA 94598-6101.
- What is Sarah Buenviaje's phone number?
- The practice phone number listed in the NPPES registry for Sarah Buenviaje is (925) 692-5610.
- Does Sarah Buenviaje accept Medicare?
- Sarah Buenviaje is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Buenviaje's NPI active?
- Yes — Sarah Buenviaje's NPI (1588716971) is active in the NPPES registry as of the last update on 2025-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.