DWAYNE OMAR ENNIS PMHNP-BC
NPI 1700607835
Nurse Practitioner - Psychiatric/Mental Health in La Plata, MD

Active since October 21, 2024PECOS EnrolledAccepts Medicare Assignment
1014 WASHINGTON AVE, LA PLATA, MD 20646(917) 560-5145 Get Directions Write a Review

NPPES record last updated: February 6, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 6, 2026, Oct 12, 2025 (2 updates tracked since 2025).

About Dwayne Omar Ennis Pmhnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DWAYNE OMAR ENNIS PMHNP-BC (NPI 1700607835) is an individual psychiatric/mental health provider in La Plata, Maryland, licensed in Maryland (R173805) and active in the NPI registry since October 2024. He is enrolled in Medicare PECOS, maintains a secondary practice location in Silver Spring, and is a graduate of Other (2014).

NPPES Registry Identity

NPI1700607835
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameDWAYNE OMAR ENNISCredential: PMHNP-BC
Location Address1014 WASHINGTON AVELa Plata, MD 20646-4228
Mailing Address1014 Washington AveLa Plata, MD 20646-4228
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateOctober 21, 2024
Last NPPES UpdateFebruary 6, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 6, 2026
✔ NPI 1700607835 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in MD · R173805
1014 WASHINGTON AVE, La Plata, MD 20646

Secondary Practice Location 1

Location 18040 Georgia Ave Ste 170Silver Spring, MD 20910-4959 · Phone (202) 360-4787 · Fax (202) 360-4787

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dwayne Omar Ennis Pmhnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4880102011
PECOS Enrollment IDI20250731001106
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Dwayne Ennis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Adult Mental Health
280 STAFFORD ROAD
Barstow, MD 20610
  • Reassigned Medicare billing, Maryland enrollment
  • 25 clinicians in this Medicare group
Psychiatry
8040 GEORGIA AVE STE 170
Silver Spring, MD 20910
  • Reassigned Medicare billing, District of Columbia and Maryland enrollments
  • 128 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20646 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.75 typical visit price
range $57.99 – $175.57
Typical copayment $22.43 (range $14.49 – $43.89)
Most-billed visit code 99203
Established Patient
$102.11 typical visit price
range $18.66 – $143.02
Typical copayment $25.52 (range $4.66 – $35.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Registered Nurse
1014 WASHINGTON AVE
LA PLATA, MD 20646
Registered Nurse
1014 WASHINGTON AVE
LA PLATA, MD 20646
Registered Nurse (Psychiatric/Mental Health, Adult)
1014 WASHINGTON AVE
LA PLATA, MD 20646
Counselor (Addiction (Substance Use Disorder))
1014 WASHINGTON AVE
LA PLATA, MD 20646
Clinic/Center (Rehabilitation, Substance Use Disorder)
1014 WASHINGTON AVE, FIRST, SECOND, THIRD FLOORS
LA PLATA, MD 20646
Registered Nurse
1014 WASHINGTON AVE
LA PLATA, MD 20646
Registered Nurse (Addiction (Substance Use Disorder))
1014 WASHINGTON AVE
LA PLATA, MD 20646

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dwayne Ennis's NPI number?

The NPI number for Dwayne Ennis is 1700607835. It was assigned to this individual provider in the NPPES registry on October 21, 2024.

Where is Dwayne Ennis located?

Dwayne Ennis practices at 1014 Washington Ave, La Plata, MD 20646. The listed phone number is (917) 560-5145.

What is Dwayne Ennis's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Dwayne Ennis enrolled in Medicare?

Yes. Dwayne Ennis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Dwayne Ennis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dwayne Ennis reassigns Medicare benefits to 2 organizations: Calvert County Health Department (Barstow, MD) and Axis Healthcare Group (Silver Spring, MD). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Dwayne Ennis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Dwayne Ennis was last updated on February 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.