NPI registry status
Active
2026 NPPES data Adult Health Nurse Practitioner NPI 1609047760 APN
Verify on CMS → Tiffanie Marksbury, APN
Adult Health Nurse Practitioner in Nashville, 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 29,811 in Adult 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
908
Medicare Part D claims · 144 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
30%
generic claims · 60% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97.1/100
▲ 14 pts above national avg 83.5 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Tiffanie Marksbury, APN reported a CMS MIPS final score of 97.1/100 - above the 83.5 national average - and filed 908 Medicare Part D claims in 2024.
- 97.1/100
- MIPS score · +14 vs avg
- 908
- Part D claims, 2024
- 30%
- generic prescribing
- ≥84th
- pct among measured MIPS (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 Tiffanie Marksbury, APN
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 1609047760), first enumerated 03/17/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 908 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 97.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1609047760 · Adult Health Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MID · MIPS-ELITE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1609047760
- ENUM-MID 2008
- TAX-MID 30K Adult Health
- MIPS-ELITE 97.1/100
- RX-LIGHT 908
- BOOK-LIGHT 513 in Tennessee
- PHOTO-FINISH Sarah Carroll · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Marksbury · this…
Marksbury · this provider
97.1 MIPS pts
- Caroline Duley ·…
Caroline Duley
97.1 MIPS pts
- Sophie McCain · …
Sophie McCain
97.1 MIPS pts
- Sarah Carroll · …
Sarah Carroll
97.1 MIPS pts
- Brenda Kline · h…
Brenda Kline
97.2 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Tiffanie Marksbury, APN'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.
97 ≥ 84th percentile 84% 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 Tiffanie Marksbury, APN sits
This provider among adult health nurse practitioner peers
Across the 4,201 adult health nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Tiffanie Marksbury, APN writes more Part D claims than 69% of them and scores higher on MIPS quality than 85% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one adult health nurse practitioner peer from a representative sample of 60; the gold marker is Tiffanie Marksbury, APN. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Tiffanie Marksbury, APN?
High performer (top quartile)Primary specialty
Adult Health Nurse Practitioner
Medicare Part D claims
908 30% vs specialty avg
MIPS final score
97.1/100 13.6 pts vs avg
Specialty distribution in Tennessee
How Adult Health Nurse Practitioner compares to other specialties among Tennessee providers
Medicare quality performance, MIPS
Tiffanie Marksbury, APN's 2023 MIPS final score plotted against the Adult Health Nurse Practitioner national average
- MIPS Final Score
- 97.1/100
- 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 | 1609047760 |
|---|---|
| Specialty | Adult Health Nurse Practitioner |
| Credentials | APN |
| Gender | Female |
| NPI Issued | 03/17/2008 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
97.1279
Final Score
Measured-score avg: 83.5
85.6458
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Tiffanie Marksbury, APN 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.
Vanderbilt University Medical Center
★★★★★ 5/5
Nashville, TN
Acute Care Hospitals
CMS CCN: 440039
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Brand-heavy
Tiffanie Marksbury, APN - brand share 60.0%
Adult Health Nurse Practitioner average
60% brand-name claims vs 30% generic, on 908 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.
908
Total Claims
$483K
Total Drug Cost
144
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,910.633
- Total Day Supply
- 56,491
- Brand vs Generic
- 60% brand / 30% generic
- Brand Drug Cost
- $445K
- Generic Drug Cost
- $5K
Patient Demographics
- Average Patient Age
- 65.8 years
- Avg HCC Risk Score
- 2.27
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 47, 65-74: 71, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Tiffanie Marksbury, APN prescribes most
Top Medicare Part D drugs by claim count, 2024
- Ozempic
Ozempic
92 claims
- Mounjaro
Mounjaro
81 claims
- Lantus Solostar
Lantus Solostar
58 claims
- Metformin Hcl Er
Metformin Hcl Er
44 claims
- Levothyroxine Sodium
Levothyroxine Sodium
39 claims
- Ultra-Fine Nano Pe… 30
Ultra-Fine Nano Pen Needle
30 claims
- Humalog Kwikpen U-… 29
Humalog Kwikpen U-100
29 claims
- Trulicity 29
Trulicity
29 claims
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 92 |
| Mounjaro Tirzepatide | 81 |
| Lantus Solostar Insulin Glargine,hum.Rec.Anlog | 58 |
| Metformin Hcl Er Metformin Hcl | 44 |
| Levothyroxine Sodium | 39 |
| Ultra-Fine Nano Pen Needle Pen Needle, Diabetic | 30 |
| Humalog Kwikpen U-100 Insulin Lispro | 29 |
| Trulicity Dulaglutide | 29 |
| Jardiance Empagliflozin | 27 |
| Rosuvastatin Calcium | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Adult Health Nurse Practitioner Overview
How Tiffanie Marksbury, APN fits within the Adult Health Nurse Practitioner landscape nationally.
29,811
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,291
Avg Claims per Provider
Tiffanie Marksbury, APN's 908 claims are below the specialty average of 1,291.
Nationwide Adult Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Marksbury, both outside Tennessee so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (97.1 here).
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Adult Health Nurse Practitioner Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Marksbury.
One of 513 Adult Health Nurse Practitioner providers enrolled in Tennessee, 5 are shown here.
Amber Adams
NP
Memphis, TN
Darryl Adams
APN
Altamont, TN
Joanna Adams
NP
Knoxville, TN
Kimberly Adams
NP
Chattanooga, TN
Wanda Adams
ANP
Murfreesboro, TN
Compare Adult Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Tiffanie Marksbury, APN's specialty? ▼
Tiffanie Marksbury, APN specializes in Adult Health Nurse Practitioner and practices in Nashville, Tennessee. Credentials: APN.
How much does Tiffanie Marksbury, APN prescribe under Medicare Part D? ▼
In 2024, Tiffanie Marksbury, APN wrote 908 Medicare Part D claims totaling $483K in drug costs for 144 beneficiaries.
What is Tiffanie Marksbury, APN's Medicare quality score? ▼
Tiffanie Marksbury, APN has a CMS MIPS Final Score of 97.1/100 (Quality: 85.6). 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 Tiffanie Marksbury, APN located? ▼
Tiffanie Marksbury, APN is located at 3601 THE VANDERBILT CLINIC, Nashville, TN, 37232. Phone: (615) 322-3000.
What is Tiffanie Marksbury, APN's NPI number? ▼
Tiffanie Marksbury, APN's National Provider Identifier (NPI) is 1609047760, issued on 03/17/2008.
Does Tiffanie Marksbury, APN prescribe more brand-name or generic drugs? ▼
Tiffanie Marksbury, APN's prescribing is 60% brand-name and 30% generic drugs by claim count, with $445K in brand drug costs.
How many Adult Health Nurse Practitioner providers are there in the US? ▼
There are 29,811 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,291 Medicare Part D claims per year.
What drugs does Tiffanie Marksbury, APN prescribe most often? ▼
Based on 2024 Medicare Part D data, Tiffanie Marksbury, APN's most frequently prescribed drugs include Ozempic, Mounjaro, Lantus Solostar. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Tiffanie Marksbury, APN accept Medicare? ▼
Tiffanie Marksbury, APN appears in CMS Medicare data with 908 Part D claims and 144 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Tiffanie Marksbury, APN's credentials? ▼
Tiffanie Marksbury, APN's NPI is 1609047760 with credentials APN. 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.