Jillian Littlefield, PMHNP
NPI 1427758903 · Psychiatric/Mental Health Nurse Practitioner · Portland, ME
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jillian Littlefield, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Portland, ME (NPI 1427758903).
Provider details
- NPI number
- 1427758903
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Female
- Sole proprietor
- No
- License
- CNP221464 (ME)
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 tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Lorazepam | 60 |
| Lamotrigine | 28 |
| Aripiprazole | 25 |
| Duloxetine Hcl | 24 |
| Oxcarbazepine | 17 |
| Escitalopram Oxalate | 15 |
| Mirtazapine | 15 |
| Bupropion Hclbrand: Bupropion Xl | 13 |
| Quetiapine Fumarate | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-03-03
- Last updated
- 2025-04-27
- Certified
- 2025-04-27
Frequently asked questions
- What is Jillian Littlefield's NPI number?
- Jillian Littlefield's National Provider Identifier (NPI) is 1427758903, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jillian Littlefield's specialty?
- Jillian Littlefield is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jillian Littlefield located?
- Jillian Littlefield's practice location on file with NPPES is 180 Park Ave Ste 1, Portland, ME 04102-2927.
- What is Jillian Littlefield's phone number?
- The practice phone number listed in the NPPES registry for Jillian Littlefield is (207) 874-2141.
- Does Jillian Littlefield accept Medicare?
- Jillian Littlefield is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jillian Littlefield's NPI active?
- Yes — Jillian Littlefield's NPI (1427758903) is active in the NPPES registry as of the last update on 2025-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.