NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1821514035 PMHNP
Verify on CMS → Lily Parsey, PMHNP
Psychiatric/Mental Health Nurse Practitioner in Gaithersburg, 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 40,776 in Psychiatric/Mental Health Nurse Practitioner, 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
660
Medicare Part D claims · 41 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Lily Parsey, PMHNP filed 660 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in Gaithersburg, Maryland, prescribing 94% generic.
- 660
- Part D claims, 2023
- 94%
- generic prescribing
- ≥69th
- pct by Part D claim volume (lower-bound band)
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.
CMS NPPES provider registry desk
NPI 1821514035 · Psychiatric/Mental Health Nurse Practitioner
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1821514035
- ENUM-RECENT 2017
- TAX-MID 41K Psychiatric/Mental Health
- RX-LIGHT 660
- BOOK-LIGHT 1,757 in Maryland
- PHOTO-ENUM Humberto Beltran · 2017
Lily Parsey, PMHNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
660 ≥ 69th percentile 69% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Lily Parsey, PMHNP?
Quality data not reportedPrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
660 29% vs specialty avg
Specialty distribution in Maryland
How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Maryland providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Psychiatric/Mental Health Nurse Practitioner. Verify directly:
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 | 1821514035 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Credentials | PMHNP |
| Gender | Female |
| NPI Issued | 08/18/2017 |
Brand vs generic prescribing mix · Generic-heavy
Lily Parsey, PMHNP - brand share 6.0%
Psychiatric/Mental Health Nurse Practitioner average
6% brand-name claims vs 94% generic, on 660 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.
660
Total Claims
$115K
Total Drug Cost
41
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,310
- Total Day Supply
- 38,659
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $85K
- Generic Drug Cost
- $30K
Patient Demographics
- Average Patient Age
- 62.7 years
- Avg HCC Risk Score
- 0.98
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 13, 65-74: 21, 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 Lily Parsey, PMHNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
42 claims
- Diazepam
Diazepam
38 claims
- Sertraline Hcl
Sertraline Hcl
35 claims
- Alprazolam
Alprazolam
34 claims
- Bupropion Xl
Bupropion Xl
32 claims
- Fluoxetine Hcl
Fluoxetine Hcl
32 claims
- Clonazepam
Clonazepam
30 claims
- Divalproex Sodium
Divalproex Sodium
30 claims
| Drug | Claims |
|---|---|
| Gabapentin | 42 |
| Diazepam | 38 |
| Sertraline Hcl | 35 |
| Alprazolam | 34 |
| Bupropion Xl Bupropion Hcl | 32 |
| Fluoxetine Hcl | 32 |
| Clonazepam | 30 |
| Divalproex Sodium | 30 |
| Lamotrigine | 28 |
| Trazodone Hcl | 28 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Psychiatric/Mental Health Nurse Practitioner in MD →
All providers in Maryland →
Compare specialties →
Psychiatric/Mental Health Nurse Practitioner Overview
How Lily Parsey, PMHNP fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.
40,776
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider
Lily Parsey, PMHNP's 660 claims are below the specialty average of 927.
Nationwide Psychiatric/Mental Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Parsey, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2017)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Parsey.
One of 1,757 Psychiatric/Mental Health Nurse Practitioner providers enrolled in Maryland, 5 are shown here.
Dr. Elisabeth Abamina-Lette
PMHNP-BC
Baltimore, MD
Dr. Christina Abange
NP
Greenbelt, MD
Itoro Abatai
Baltimore, MD
Dr. Ama Abban
PMHNP
Jessup, MD
Dr. Adebola Abe-Fapohunda
PMHNP-BC
Upper Marlboro, MD
Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Lily Parsey, PMHNP's specialty? ▼
Lily Parsey, PMHNP specializes in Psychiatric/Mental Health Nurse Practitioner and practices in Gaithersburg, Maryland. Credentials: PMHNP.
How much does Lily Parsey, PMHNP prescribe under Medicare Part D? ▼
In 2023, Lily Parsey, PMHNP wrote 660 Medicare Part D claims totaling $115K in drug costs for 41 beneficiaries.
Where is Lily Parsey, PMHNP located? ▼
Lily Parsey, PMHNP is located at 8929 SHADY GROVE CT, Gaithersburg, MD, 20877. Phone: (202) 465-5703.
What is Lily Parsey, PMHNP's NPI number? ▼
Lily Parsey, PMHNP's National Provider Identifier (NPI) is 1821514035, issued on 08/18/2017.
Does Lily Parsey, PMHNP prescribe more brand-name or generic drugs? ▼
Lily Parsey, PMHNP's prescribing is 6% brand-name and 94% generic drugs by claim count, with $85K in brand drug costs.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US? ▼
There are 40,776 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 927 Medicare Part D claims per year.
What drugs does Lily Parsey, PMHNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Lily Parsey, PMHNP's most frequently prescribed drugs include Gabapentin, Diazepam, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Lily Parsey, PMHNP accept Medicare? ▼
Lily Parsey, PMHNP appears in CMS Medicare data with 660 Part D claims and 41 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Lily Parsey, PMHNP's credentials? ▼
Lily Parsey, PMHNP's NPI is 1821514035 with credentials PMHNP. 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.
- 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
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.