Eloise Theisen, NP
NPI 1659983682 · Nurse Practitioner · Stanford, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eloise Theisen, NP is a Nurse Practitioner provider in Stanford, CA (NPI 1659983682).
Provider details
- NPI number
- 1659983682
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 95001766 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
368 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 163 | $182 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 75 | $94 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 65 | $132 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 22 | $223 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 19 | $170 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 78 | 37 |
| Methadone Hcl | 53 | 16 |
| Gabapentin | 50 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 41 | 15 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 36 | 14 |
| Mirtazapine | 21 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-08-20
- Last updated
- 2025-12-30
- Certified
- 2025-12-30
Frequently asked questions
- What is Eloise Theisen's NPI number?
- Eloise Theisen's National Provider Identifier (NPI) is 1659983682, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eloise Theisen's specialty?
- Eloise Theisen is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Eloise Theisen located?
- Eloise Theisen's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Eloise Theisen's phone number?
- The practice phone number listed in the NPPES registry for Eloise Theisen is (650) 723-4000.
- Does Eloise Theisen accept Medicare?
- Eloise Theisen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eloise Theisen's NPI active?
- Yes — Eloise Theisen's NPI (1659983682) is active in the NPPES registry as of the last update on 2025-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.