NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1568086288 MSN
Verify on CMS → William Blaker, MSN
Psychiatric/Mental Health Nurse Practitioner in Maryville, Tennessee.
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
19
Medicare Part D claims · Psychiatric/Mental Health Nurse Practitioner avg: 927
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
William Blaker, MSN filed 19 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in Maryville, Tennessee.
- 19
- Part D claims, 2023
- ≥0th
- 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 William Blaker, MSN
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 1568086288), first enumerated 05/29/2020.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 19 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 1568086288 · Psychiatric/Mental Health Nurse Practitioner
NPI-10 · ENUM-RECENT · TAX-MID · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1568086288
- ENUM-RECENT 2020
- TAX-MID 41K Psychiatric/Mental Health
- RX-TRACE 19
- BOOK-LIGHT 1,131 in Tennessee
- PHOTO-ENUM Kristen Winterringer · 2020
William Blaker, MSN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
19 ≥ 0th percentile 0% 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 William Blaker, MSN?
Quality data not reportedPrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
19 98% vs specialty avg
Specialty distribution in Tennessee
How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among Tennessee 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 | 1568086288 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Credentials | MSN |
| Gender | Male |
| NPI Issued | 05/29/2020 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
19
Total Claims
$1K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 19
- Total Day Supply
- 570
- Brand Drug Cost
- $0
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 48.7 years
- Avg HCC Risk Score
- 0.75
More Psychiatric/Mental Health Nurse Practitioner in TN →
All providers in Tennessee →
Compare specialties →
Psychiatric/Mental Health Nurse Practitioner Overview
How William Blaker, MSN 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
William Blaker, MSN's 19 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 Blaker, both outside Tennessee so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Blaker.
One of 1,131 Psychiatric/Mental Health Nurse Practitioner providers enrolled in Tennessee, 5 are shown here.
Dr. Tracy Abney
DNP, PMHNP, ACNS
Brentwood, TN
Dr. Marqueta Abraham
DNP, PMHNP-BC
Bolivar, TN
Dr. Robin Adam
APRN
Smyrna, TN
Dr. Alexandria Adams
PMHNP
Goodlettsville, TN
Dr. Cynthia Adams
PMHNP-BC
Knoxville, TN
Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Blaker, MSN's specialty? ▼
William Blaker, MSN specializes in Psychiatric/Mental Health Nurse Practitioner and practices in Maryville, Tennessee. Credentials: MSN.
How much does William Blaker, MSN prescribe under Medicare Part D? ▼
In 2023, William Blaker, MSN wrote 19 Medicare Part D claims totaling $1K in drug costs for N/A beneficiaries.
Where is William Blaker, MSN located? ▼
William Blaker, MSN is located at 1551 CAVALIER DR, Maryville, TN, 37803. Phone: (865) 654-8868.
What is William Blaker, MSN's NPI number? ▼
William Blaker, MSN's National Provider Identifier (NPI) is 1568086288, issued on 05/29/2020.
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.
Does William Blaker, MSN accept Medicare? ▼
William Blaker, MSN appears in CMS Medicare data with 19 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Blaker, MSN's credentials? ▼
William Blaker, MSN's NPI is 1568086288 with credentials MSN. 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.