NPI registry status
Active
2026 NPPES data Adult Psychiatric/Mental Health Clinical Nurse Specialist NPI 1689673956 PMHNP
Verify on CMS → Nancy Birtley, PMHNP
Adult Psychiatric/Mental Health Clinical Nurse Specialist in Saint Peters, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 960 in Adult Psychiatric/Mental Health Clinical Nurse Specialist, 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
1K
Medicare Part D claims · 138 beneficiaries · Adult Psychiatric/Mental Health Clinical Nurse Specialist avg: 1K
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Nancy Birtley, PMHNP filed 1,417 Medicare Part D claims in 2024 as an Adult Psychiatric/Mental Health Clinical Nurse Specialist in Saint Peters, Missouri.
- 1K
- Part D claims, 2024
- ≥80th
- 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.
Federal trust snapshot
What official records show about Nancy Birtley, PMHNP
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1689673956), first enumerated 07/19/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,417 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- 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 1689673956 · Adult Psychiatric/Mental Health Clinical Nurse Specialist
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1689673956
- ENUM-LEGACY 2005
- TAX-NARROW 960
- RX-MID 1,417
- BOOK-THIN 21 in Missouri
- PHOTO-ENUM Mary Dunning, APN,RN… · 2005
Nancy Birtley, PMHNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,417 ≥ 80th percentile 80% of 1,416,883 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 · 2024
What does the federal data show about Nancy Birtley, PMHNP?
Quality data not reportedPrimary specialty
Adult Psychiatric/Mental Health Clinical Nurse Specialist
Medicare Part D claims
1,417 17% vs specialty avg
Specialty distribution in Missouri
How Adult Psychiatric/Mental Health Clinical Nurse Specialist compares to other specialties among Missouri 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 Adult Psychiatric/Mental Health Clinical Nurse Specialist. 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 | 1689673956 |
|---|---|
| Specialty | Adult Psychiatric/Mental Health Clinical Nurse Specialist |
| Credentials | PMHNP |
| Gender | Female |
| NPI Issued | 07/19/2005 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
1,417
Total Claims
$23K
Total Drug Cost
138
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,424.6
- Total Day Supply
- 21,485
- Brand Drug Cost
- $0
- Generic Drug Cost
- $23K
Patient Demographics
- Average Patient Age
- 83.4 years
- Avg HCC Risk Score
- 1.88
- Gender Split
- 74% female / 26% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Nancy Birtley, PMHNP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Sertraline Hcl
Sertraline Hcl
583 claims
- Trazodone Hcl 206
Trazodone Hcl
206 claims
- Divalproex Sodium 133
Divalproex Sodium
133 claims
- Duloxetine Hcl 78
Duloxetine Hcl
78 claims
- Quetiapine Fumarate 73
Quetiapine Fumarate
73 claims
- Escitalopram Oxalate 53
Escitalopram Oxalate
53 claims
- Venlafaxine Hcl Er 43
Venlafaxine Hcl Er
43 claims
- Bupropion Hcl Sr 41
Bupropion Hcl Sr
41 claims
| Drug | Claims |
|---|---|
| Sertraline Hcl | 583 |
| Trazodone Hcl | 206 |
| Divalproex Sodium | 133 |
| Duloxetine Hcl | 78 |
| Quetiapine Fumarate | 73 |
| Escitalopram Oxalate | 53 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 43 |
| Bupropion Hcl Sr Bupropion Hcl | 41 |
| Donepezil Hcl | 37 |
| Buspirone Hcl | 36 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Adult Psychiatric/Mental Health Clinical Nurse Specialist in MO →
All providers in Missouri →
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Adult Psychiatric/Mental Health Clinical Nurse Specialist Overview
How Nancy Birtley, PMHNP fits within the Adult Psychiatric/Mental Health Clinical Nurse Specialist landscape nationally.
960
Adult Psychiatric/Mental Health Clinical Nurse Specialist Providers in US
51
States with Adult Psychiatric/Mental Health Clinical Nurse Specialist
1,206
Avg Claims per Provider
Nancy Birtley, PMHNP's 1,417 claims are above the specialty average of 1,206.
Nationwide Adult Psychiatric/Mental Health Clinical Nurse Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Birtley, both outside Missouri so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Adult Psychiatric/Mental Health Clinical Nurse Specialist Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Birtley.
One of 21 Adult Psychiatric/Mental Health Clinical Nurse Specialist providers enrolled in Missouri, 5 are shown here.
Frequently Asked Questions
What is Nancy Birtley, PMHNP's specialty? ▼
Nancy Birtley, PMHNP specializes in Adult Psychiatric/Mental Health Clinical Nurse Specialist and practices in Saint Peters, Missouri. Credentials: PMHNP.
How much does Nancy Birtley, PMHNP prescribe under Medicare Part D? ▼
In 2024, Nancy Birtley, PMHNP wrote 1,417 Medicare Part D claims totaling $23K in drug costs for 138 beneficiaries.
Where is Nancy Birtley, PMHNP located? ▼
Nancy Birtley, PMHNP is located at 6209 MID RIVERS MALL DR, Saint Peters, MO, 63304. Phone: (636) 244-4500.
What is Nancy Birtley, PMHNP's NPI number? ▼
Nancy Birtley, PMHNP's National Provider Identifier (NPI) is 1689673956, issued on 07/19/2005.
How many Adult Psychiatric/Mental Health Clinical Nurse Specialist providers are there in the US? ▼
There are 960 Adult Psychiatric/Mental Health Clinical Nurse Specialist providers across 51 states in the US. The average Adult Psychiatric/Mental Health Clinical Nurse Specialist provider writes 1,206 Medicare Part D claims per year.
What drugs does Nancy Birtley, PMHNP prescribe most often? ▼
Based on 2024 Medicare Part D data, Nancy Birtley, PMHNP's most frequently prescribed drugs include Sertraline Hcl, Trazodone Hcl, Divalproex Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nancy Birtley, PMHNP accept Medicare? ▼
Nancy Birtley, PMHNP appears in CMS Medicare data with 1,417 Part D claims and 138 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nancy Birtley, PMHNP's credentials? ▼
Nancy Birtley, PMHNP's NPI is 1689673956 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 (2024). 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 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.