Mark Shaughnessy, N.P.
NPI 1104880350 · Psychiatric/Mental Health Nurse Practitioner · Scarborough, ME
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Shaughnessy, N.P. is a Psychiatric/Mental Health Nurse Practitioner provider in Scarborough, ME (NPI 1104880350).
Provider details
- NPI number
- 1104880350
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Male
- Sole proprietor
- No
- License
- CNP81591 (ME)
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 tenure33% of score
20 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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clonazepam | 31 |
| Sertraline Hcl | 25 |
| Lamotrigine | 21 |
| Alprazolam | 19 |
| Trazodone Hcl | 17 |
| Lorazepam | 17 |
| Doxepin Hcl | 13 |
| Aripiprazole | 12 |
| Dextroamphetamine/Amphetaminebrand: Dextroamphetamine-Amphetamine | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$46 across 2 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
- 2006-04-14
- Last updated
- 2023-01-23
- Certified
- 2023-01-23
Frequently asked questions
- What is Mark Shaughnessy's NPI number?
- Mark Shaughnessy's National Provider Identifier (NPI) is 1104880350, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Shaughnessy's specialty?
- Mark Shaughnessy is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mark Shaughnessy located?
- Mark Shaughnessy's practice location on file with NPPES is 15 Pleasant Hill Rd Ste 204, Scarborough, ME 04074-9688.
- What is Mark Shaughnessy's phone number?
- The practice phone number listed in the NPPES registry for Mark Shaughnessy is (207) 560-3770.
- Does Mark Shaughnessy accept Medicare?
- Mark Shaughnessy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Shaughnessy's NPI active?
- Yes — Mark Shaughnessy's NPI (1104880350) is active in the NPPES registry as of the last update on 2023-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.