Stephanie Williams, FNP-C
NPI 1700444056 · Family Nurse Practitioner · Palo Alto, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Williams, FNP-C is a Family Nurse Practitioner provider in Palo Alto, CA (NPI 1700444056).
Provider details
- NPI number
- 1700444056
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 25620 (TN)
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
7 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
43 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 17 | $79 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 15 | $71 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus and Influenza87428 | 11 | $63 |
Typical Medicare-allowed amounts for these services range $63–$79 (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 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 159 | 93 |
| Atorvastatin Calcium | 156 | 88 |
| Losartan Potassium | 53 | 27 |
| Metformin Hcl | 51 | 26 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 48 | 30 |
| Rosuvastatin Calcium | 44 | 25 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$34 across 2 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
- 2019-06-02
- Last updated
- 2026-04-07
- Certified
- 2026-04-07
Frequently asked questions
- What is Stephanie Williams's NPI number?
- Stephanie Williams's National Provider Identifier (NPI) is 1700444056, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Williams's specialty?
- Stephanie Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Stephanie Williams located?
- Stephanie Williams's practice location on file with NPPES is 195 Page Mill Rd Ste 103, Palo Alto, CA 94306-2073.
- What is Stephanie Williams's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Williams is (888) 731-8994.
- Does Stephanie Williams accept Medicare?
- Stephanie Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Williams's NPI active?
- Yes — Stephanie Williams's NPI (1700444056) is active in the NPPES registry as of the last update on 2026-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.