Gertrude Chancellor, FNP-BC
NPI 1467944900 · Family Medicine Physician · Lake Forest, CA
Enrolled with Medicare as Order and Referring Only - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gertrude Chancellor, FNP-BC is a Family Medicine Physician provider in Lake Forest, CA (NPI 1467944900).
Provider details
- NPI number
- 1467944900
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- 95007950 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 55 | 16 |
| Metformin Hcl | 52 | 17 |
| Atorvastatin Calcium | 51 | 21 |
| Lisinopril | 42 | 15 |
| Levothyroxine Sodium | 33 | 14 |
| Amlodipine Besylate | 27 | 14 |
| Hydrochlorothiazide |
Practice location
Mailing address
Additional practice locations (1)
- 27211 Puerta Del OroMission Viejo, CA 92691-4433Phone: (949) 310-9792
Registry dates
- Enumerated
- 2018-05-31
- Last updated
- 2021-06-24
- Certified
- 2021-06-24
Frequently asked questions
- What is Gertrude Chancellor's NPI number?
- Gertrude Chancellor's National Provider Identifier (NPI) is 1467944900, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gertrude Chancellor's specialty?
- Gertrude Chancellor is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gertrude Chancellor located?
- Gertrude Chancellor's practice location on file with NPPES is 22481 Aspan St Ste a, Lake Forest, CA 92630-1648.
- What is Gertrude Chancellor's phone number?
- The practice phone number listed in the NPPES registry for Gertrude Chancellor is (949) 240-2272.
- Does Gertrude Chancellor accept Medicare?
- Gertrude Chancellor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gertrude Chancellor's NPI active?
- Yes — Gertrude Chancellor's NPI (1467944900) is active in the NPPES registry as of the last update on 2021-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.