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 4,350 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 · 104 beneficiaries · Emergency Registered Nurse avg: 710
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
84.8/100
▲ 2 pts above national avg 83.1 · Above neutral
Industry payments
$471.33
25 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mary Walter, RN/NP, PMHNP-BC reported a CMS MIPS final score of 84.8/100 - above the 83.1 national average - and filed 1,941 Medicare Part D claims in 2023.
- 84.8/100
- MIPS score · +2 vs avg
- 2K
- Part D claims, 2023
- 97%
- 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.
Mary Walter, RN/NP, PMHNP-BC's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
85 45th percentile higher than 45% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
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 149 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 91% of them and scores higher on MIPS quality than 44% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
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
1,941 173% vs specialty avg
MIPS final score
84.8/100 1.7 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 83.1 national avg · 2023 performance year
MIPS final score (Emergency Registered Nurse) - 84.8/100 vs national avg 83.1
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).
Mary Walter, RN/NP, PMHNP-BC appears in the CMS NPPES registry as an Emergency Registered Nurse provider holding RN/NP, PMHNP-BC credentials at 976 SOLOMANS ISLAND ROAD, Prince Frederick, MD, 20678, with a listed phone of (410) 535-5400. NPI 1023449642 was issued on 12/07/2013.
Medicare Part D records for calendar year 2023 show 1,941 prescription claims written by this provider, covering 104 Medicare beneficiaries and totaling roughly $131K in drug spend, split 3% brand-name and 97% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 84.8/100 for the 2023 performance year (Quality 59, Cost 92.8), compared with the national average of 83.1.
Emergency Registered Nurse is a narrow specialty nationwide, with 4,350 enrolled providers across 54 states and an average of 710 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
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
Avg: 83.1
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 3.0%
Emergency Registered Nurse average
3% brand-name claims vs 97% generic, on 1,941 2023 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 2023.
1,941
Total Claims
$131K
Total Drug Cost
104
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,093
- Total Day Supply
- 61,154
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $44K
- Generic Drug Cost
- $87K
Patient Demographics
- Average Patient Age
- 56.7 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 70% female / 30% male
- Age Distribution
- <65: 67, 65-74: 30, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Mary Walter, RN/NP, PMHNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Clonazepam
Clonazepam
125 claims
- Hydroxyzine Pamoate
Hydroxyzine Pamoate
116 claims
- Quetiapine Fumarate
Quetiapine Fumarate
114 claims
- Aripiprazole
Aripiprazole
108 claims
- Gabapentin
Gabapentin
83 claims
- Buprenorphine-Nalo…
Buprenorphine-Naloxone
81 claims
- Trazodone Hcl
Trazodone Hcl
80 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
68 claims
| Drug | Claims |
|---|---|
| Clonazepam | 125 |
| Hydroxyzine Pamoate | 116 |
| Quetiapine Fumarate | 114 |
| Aripiprazole | 108 |
| Gabapentin | 83 |
| Buprenorphine-Naloxone Buprenorphine Hcl/Naloxone Hcl | 81 |
| Trazodone Hcl | 80 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 68 |
| Duloxetine Hcl | 64 |
| Dextroamphetamine-Amphet Er Dextroamphetamine/Amphetamine | 60 |
* 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.
4,350
Emergency Registered Nurse Providers in US
54
States with Emergency Registered Nurse
710
Avg Claims per Provider
Mary Walter, RN/NP, PMHNP-BC's 1,941 claims are above the specialty average of 710.
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.
Dr. Nicole Abrams
WHNP-BC
Baltimore, MD
John Achey
Salisbury, MD
Domingo Baez-Diaz
Bethesda, MD
Sandra Barker
Bel Air, MD
Dr. Norbert Barrientos
RN
Baltimore, MD
Compare Emergency Registered Nurse nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Maryland medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Emergency Registered Nurse peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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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 2023, Mary Walter, RN/NP, PMHNP-BC wrote 1,941 Medicare Part D claims totaling $131K in drug costs for 104 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 national average MIPS Final Score is 83.1. 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 3% brand-name and 97% generic drugs by claim count, with $44K in brand drug costs.
How many Emergency Registered Nurse providers are there in the US? ▼
There are 4,350 Emergency Registered Nurse providers across 54 states in the US. The average Emergency Registered Nurse provider writes 710 Medicare Part D claims per year.
What drugs does Mary Walter, RN/NP, PMHNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary Walter, RN/NP, PMHNP-BC's most frequently prescribed drugs include Clonazepam, Hydroxyzine Pamoate, Quetiapine Fumarate. 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 1,941 Part D claims and 104 Medicare beneficiaries in 2023. 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 (2023). 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 April 2026 (NPPES) / 2023 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.