NPI registry status
Active
2026 NPPES data Emergency Registered Nurse NPI 1023449642 RN/NP, PMHNP-BC
Verify on CMS → Mary Walter, RN/NP, PMHNP-BC
Emergency Registered Nurse in Prince Frederick, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,729 in Emergency Registered Nurse, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 114 beneficiaries · Emergency Registered Nurse avg: 743
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84.8/100
▲ 1 pts above national avg 83.5 · Above neutral
Industry payments
$471.33
25 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Mary Walter, RN/NP, PMHNP-BC reported a CMS MIPS final score of 84.8/100 - above the 83.5 national average - and filed 2,184 Medicare Part D claims in 2024.
- 84.8/100
- MIPS score · +1 vs avg
- 2K
- Part D claims, 2024
- 96%
- generic prescribing
- $471.33
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Mary Walter, RN/NP, PMHNP-BC
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1023449642), first enumerated 12/07/2013.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,184 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 84.8/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$471.33 in reported industry payments (25 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1023449642 · Emergency Registered Nurse
NPI-10 · ENUM-MID · TAX-NARROW · MIPS-INLINE · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1023449642
- ENUM-MID 2013
- TAX-NARROW 4,729
- MIPS-INLINE 84.8/100
- RX-MID 2,184
- BOOK-THIN 54 in Maryland
- PHOTO-FINISH Amrit Gill, NP · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Reena Mathew · l…
Reena Mathew
84.5 MIPS pts
- Travis Pyka, APR…
Travis Pyka, APRN FNP-C CEN
84.5 MIPS pts
- Walter · this pr…
Walter · this provider
84.8 MIPS pts
- Amrit Gill, NP ·…
Amrit Gill, NP
84.8 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Mary Walter, RN/NP, PMHNP-BC's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
85 ≥ 42nd percentile 42% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Mary Walter, RN/NP, PMHNP-BC sits
This provider among emergency registered nurse peers
Across the 144 emergency registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Mary Walter, RN/NP, PMHNP-BC writes more Part D claims than 93% of them and scores higher on MIPS quality than 42% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one emergency registered nurse peer from a representative sample of 60; the gold marker is Mary Walter, RN/NP, PMHNP-BC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Mary Walter, RN/NP, PMHNP-BC?
Near national averagePrimary specialty
Emergency Registered Nurse
Medicare Part D claims
2,184 194% vs specialty avg
MIPS final score
84.8/100 1.3 pts vs avg
Specialty distribution in Maryland
How Emergency Registered Nurse compares to other specialties among Maryland providers
Medicare quality performance, MIPS
Mary Walter, RN/NP, PMHNP-BC's 2023 MIPS final score plotted against the Emergency Registered Nurse national average
- MIPS Final Score
- 84.8/100
- vs 83.5 national avg · 2023 performance year
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1023449642 |
|---|---|
| Specialty | Emergency Registered Nurse |
| Credentials | RN/NP, PMHNP-BC |
| Gender | Female |
| NPI Issued | 12/07/2013 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.7753
Final Score
Measured-score avg: 83.5
58.961
Quality
92.79
Cost
77
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Mary Walter, RN/NP, PMHNP-BC bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Calvert County Health Department
Prince Frederick, MD
Sheppard Pratt Physicians PA
Prince Frederick, MD
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Mary Walter, RN/NP, PMHNP-BC. Source: openpaymentsdata.cms.gov.
Total received
$471
Largest payer
Indivior Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Generic-heavy
Mary Walter, RN/NP, PMHNP-BC - brand share 4.0%
Emergency Registered Nurse average
4% brand-name claims vs 96% generic, on 2,184 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
2,184
Total Claims
$159K
Total Drug Cost
114
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,396.933
- Total Day Supply
- 68,371
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $87K
- Generic Drug Cost
- $72K
Patient Demographics
- Average Patient Age
- 58.7 years
- Avg HCC Risk Score
- 1.47
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 63, 65-74: 39, 75-84: 12, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mary Walter, RN/NP, PMHNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2024
- Quetiapine Fumarate
Quetiapine Fumarate
167 claims
- Clonazepam
Clonazepam
139 claims
- Hydroxyzine Pamoate
Hydroxyzine Pamoate
122 claims
- Trazodone Hcl
Trazodone Hcl
103 claims
- Fluoxetine Hcl
Fluoxetine Hcl
101 claims
- Aripiprazole
Aripiprazole
99 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
80 claims
- Buprenorphine-Nalo…
Buprenorphine-Naloxone
71 claims
| Drug | Claims |
|---|---|
| Quetiapine Fumarate | 167 |
| Clonazepam | 139 |
| Hydroxyzine Pamoate | 122 |
| Trazodone Hcl | 103 |
| Fluoxetine Hcl | 101 |
| Aripiprazole | 99 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 80 |
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 71 |
| Gabapentin | 70 |
| Olanzapine | 67 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Emergency Registered Nurse Overview
How Mary Walter, RN/NP, PMHNP-BC fits within the Emergency Registered Nurse landscape nationally.
4,729
Emergency Registered Nurse Providers in US
54
States with Emergency Registered Nurse
743
Avg Claims per Provider
Mary Walter, RN/NP, PMHNP-BC's 2,184 claims are above the specialty average of 743.
Nationwide Emergency Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Walter, both outside Maryland so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (84.8 here).
Same NPPES enumeration year (2013)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Emergency Registered Nurse Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Walter.
One of 54 Emergency Registered Nurse providers enrolled in Maryland, 5 are shown here.
Nicole Abrams
WHNP-BC
Baltimore, MD
John Achey
Salisbury, MD
Sandra Barker
Bel Air, MD
Norbert Barrientos
RN
Baltimore, MD
Catherine Boyd
MSN,RN,CEN
Baltimore, MD
Compare Emergency Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mary Walter, RN/NP, PMHNP-BC's specialty? ▼
Mary Walter, RN/NP, PMHNP-BC specializes in Emergency Registered Nurse and practices in Prince Frederick, Maryland. Credentials: RN/NP, PMHNP-BC.
How much does Mary Walter, RN/NP, PMHNP-BC prescribe under Medicare Part D? ▼
In 2024, Mary Walter, RN/NP, PMHNP-BC wrote 2,184 Medicare Part D claims totaling $159K in drug costs for 114 beneficiaries.
What is Mary Walter, RN/NP, PMHNP-BC's Medicare quality score? ▼
Mary Walter, RN/NP, PMHNP-BC has a CMS MIPS Final Score of 84.8/100 (Quality: 59, Cost: 92.8). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mary Walter, RN/NP, PMHNP-BC located? ▼
Mary Walter, RN/NP, PMHNP-BC is located at 976 SOLOMANS ISLAND ROAD, Prince Frederick, MD, 20678. Phone: (410) 535-5400.
What is Mary Walter, RN/NP, PMHNP-BC's NPI number? ▼
Mary Walter, RN/NP, PMHNP-BC's National Provider Identifier (NPI) is 1023449642, issued on 12/07/2013.
Does Mary Walter, RN/NP, PMHNP-BC prescribe more brand-name or generic drugs? ▼
Mary Walter, RN/NP, PMHNP-BC's prescribing is 4% brand-name and 96% generic drugs by claim count, with $87K in brand drug costs.
How many Emergency Registered Nurse providers are there in the US? ▼
There are 4,729 Emergency Registered Nurse providers across 54 states in the US. The average Emergency Registered Nurse provider writes 743 Medicare Part D claims per year.
What drugs does Mary Walter, RN/NP, PMHNP-BC prescribe most often? ▼
Based on 2024 Medicare Part D data, Mary Walter, RN/NP, PMHNP-BC's most frequently prescribed drugs include Quetiapine Fumarate, Clonazepam, Hydroxyzine Pamoate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Walter, RN/NP, PMHNP-BC accept Medicare? ▼
Mary Walter, RN/NP, PMHNP-BC appears in CMS Medicare data with 2,184 Part D claims and 114 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Walter, RN/NP, PMHNP-BC's credentials? ▼
Mary Walter, RN/NP, PMHNP-BC's NPI is 1023449642 with credentials RN/NP, PMHNP-BC. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.