Alyssa Fessler, FNP
NPI 1538880042 · Family Nurse Practitioner · Orange, CA
Alyssa Fessler, FNP is a Family Nurse Practitioner provider in Orange, CA (NPI 1538880042).
Provider details
- NPI number
- 1538880042
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 698523 (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 tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 26 | — |
| Atorvastatin Calcium | 23 | 11 |
| Donepezil Hcl | 19 | — |
| Galcanezumab-Gnlmbrand: Emgality Pen | 17 | — |
| Niacinbrand: Niacin Er | 13 | — |
| Lamotrigine | 11 | — |
| Levetiracetam | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$71 across 3 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
- 2022-09-05
- Last updated
- 2022-09-05
- Certified
- 2022-09-04
Frequently asked questions
- What is Alyssa Fessler's NPI number?
- Alyssa Fessler's National Provider Identifier (NPI) is 1538880042, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alyssa Fessler's specialty?
- Alyssa Fessler is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alyssa Fessler located?
- Alyssa Fessler's practice location on file with NPPES is 6608 E Prescott Ct, Orange, CA 92867-6418.
- What is Alyssa Fessler's phone number?
- The practice phone number listed in the NPPES registry for Alyssa Fessler is (714) 310-2629.
- Is Alyssa Fessler's NPI active?
- Yes — Alyssa Fessler's NPI (1538880042) is active in the NPPES registry as of the last update on 2022-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.