MELISSA MAINIER
NPI 1043833098
Nurse Practitioner - Psychiatric/Mental Health in Baltimore, MD
About Melissa Mainier NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MELISSA MAINIER (NPI 1043833098) is an individual psychiatric/mental health provider in Baltimore, Maryland, licensed in Maryland (R221246) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS, is affiliated with Medstar Franklin Square Medical Center, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
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
Melissa Mainier 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.
Medicare Billing Reassignments
2Medicare enrollment records show Melissa Mainier reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Towson, MD 21204
- Reassigned Medicare billing, Maryland enrollment
- 20 clinicians in this Medicare group
Baltimore, MD 21239
- Reassigned Medicare billing, Maryland enrollment
- 2,602 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Medstar Franklin Square Medical Center
Acute Care Hospitals · Rosedale, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21204 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21204
BALTIMORE, MD 21204
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 Melissa Mainier's NPI number?
The NPI number for Melissa Mainier is 1043833098. It was assigned to this individual provider in the NPPES registry on May 26, 2020.
Where is Melissa Mainier located?
Melissa Mainier practices at 6501 N Charles St, Baltimore, MD 21204. The listed phone number is (410) 938-3000.
What is Melissa Mainier's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Melissa Mainier enrolled in Medicare?
Yes. Melissa Mainier 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 Melissa Mainier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Mainier reassigns Medicare benefits to 2 organizations: Psychnp Wellness Center, LLC (Towson, MD) and Medstar Medical Group II LLC (Baltimore, 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 Melissa Mainier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Melissa Mainier affiliated with any hospitals?
According to CMS data, Melissa Mainier is affiliated with Medstar Franklin Square Medical Center.
When was this NPI record last updated?
The NPPES record for Melissa Mainier was last updated on May 26, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# Melissa Mainier · NPI 1043833098
Psychiatric/Mental Health physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since May 26, 2020.
## Identity
- **NPI:** 1043833098 (Entity type: Individual)
- **Enumerated:** May 26, 2020
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** R221246 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 6501 N CHARLES ST, Baltimore, MD 21204-6819
- **Phone:** (410) 938-3000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Psychnp Wellness Center, LLC (NPI 1184042004, Towson, MD); Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** May 26, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1043833098) · Data from the CMS NPPES public registry.