Kathryn Simms, NP
NPI 1447770359 · Nurse Practitioner · Castro Valley, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Simms, NP is a Nurse Practitioner provider in Castro Valley, CA (NPI 1447770359).
Provider details
- NPI number
- 1447770359
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 95016506 (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
8 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
2,168 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 476 | $8 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 370 | $17 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 310 | $15 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 197 | $147 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 | $93 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 103 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 105 | 26 |
| Tamoxifen Citrate | 81 | 27 |
| Prochlorperazine Maleate | 63 | 40 |
| Gabapentin | 59 | 25 |
| Hydroxyurea | 49 | 13 |
| Mirtazapine | 48 | 20 |
| Ondansetron Hcl | 46 | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$97 across 4 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
- 2017-06-21
- Last updated
- 2024-02-01
- Certified
- 2024-02-01
Frequently asked questions
- What is Kathryn Simms's NPI number?
- Kathryn Simms's National Provider Identifier (NPI) is 1447770359, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Simms's specialty?
- Kathryn Simms is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathryn Simms located?
- Kathryn Simms's practice location on file with NPPES is 20055 Lake Chabot Rd Ste 130, Castro Valley, CA 94546-5332.
- What is Kathryn Simms's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Simms is (415) 885-3882.
- Does Kathryn Simms accept Medicare?
- Kathryn Simms is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Simms's NPI active?
- Yes — Kathryn Simms's NPI (1447770359) is active in the NPPES registry as of the last update on 2024-02-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.