NPI registry status
Active
2026 NPPES data Vascular Neurology Physician NPI 1225233141 MD
Verify on CMS → David Parrella, MD
Vascular Neurology Physician 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 561 in Vascular Neurology Physician, 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
24
Medicare Part D claims · Vascular Neurology Physician avg: 378
Industry payments
$538.76
11 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Parrella, MD filed 24 Medicare Part D claims in 2023 as a Vascular Neurology Physician in Nashville, Tennessee.
- 24
- Part D claims, 2023
- Likely
- board-certified (heuristic)
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.
David Parrella, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
24 0th percentile higher than 0% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
David Parrella, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about David Parrella, MD?
Quality data not reportedPrimary specialty
Vascular Neurology Physician
Medicare Part D claims
24 94% vs specialty avg
Specialty distribution in Tennessee
How Vascular Neurology Physician 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 Vascular Neurology Physician. 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).
David Parrella, MD appears in the CMS NPPES registry as a Vascular Neurology Physician provider holding MD credentials at 2011 MURPHY AVE STE 301, Nashville, TN, 37203, with a listed phone of (615) 327-9543. NPI 1225233141 was issued on 06/20/2007.
Medicare Part D records for calendar year 2023 show 24 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $6K in drug spend.
Vascular Neurology Physician is a narrow specialty nationwide, with 561 enrolled providers across 49 states and an average of 378 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 | 1225233141 |
|---|---|
| Specialty | Vascular Neurology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/20/2007 |
Hospital and facility affiliations
Facilities where David Parrella, MD 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.
Bayhealth Medical Center, Inc
Milford, DE
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 David Parrella, MD. Source: openpaymentsdata.cms.gov.
Total received
$539
Largest payer
Medtronic, 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
24
Total Claims
$6K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 24
- Total Day Supply
- 668
- Generic Drug Cost
- $157
Patient Demographics
- Average Patient Age
- 82.8 years
- Avg HCC Risk Score
- 0.85
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Amitriptyline Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Vascular Neurology Physician Overview
How David Parrella, MD fits within the Vascular Neurology Physician landscape nationally.
561
Vascular Neurology Physician Providers in US
49
States with Vascular Neurology Physician
378
Avg Claims per Provider
David Parrella, MD's 24 claims are below the specialty average of 378.
Nearby Vascular Neurology Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Parrella.
Dr. Violiza Acosta
M.D.
Memphis, TN
Dr. Jillian Berkman
MD
Nashville, TN
Dr. Charles Cape
M.D
Germantown, TN
Dr. Zunir Chaudhry
MD
Nashville, TN
Dr. Dennis Cole
MD
Nashville, TN
Compare Vascular Neurology Physician 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 Tennessee medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Vascular Neurology Physician 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Tennessee
Frequently Asked Questions
What is David Parrella, MD's specialty? ▼
David Parrella, MD specializes in Vascular Neurology Physician and practices in Nashville, Tennessee. Credentials: MD.
How much does David Parrella, MD prescribe under Medicare Part D? ▼
In 2023, David Parrella, MD wrote 24 Medicare Part D claims totaling $6K in drug costs for N/A beneficiaries.
Where is David Parrella, MD located? ▼
David Parrella, MD is located at 2011 MURPHY AVE STE 301, Nashville, TN, 37203. Phone: (615) 327-9543.
What is David Parrella, MD's NPI number? ▼
David Parrella, MD's National Provider Identifier (NPI) is 1225233141, issued on 06/20/2007.
How many Vascular Neurology Physician providers are there in the US? ▼
There are 561 Vascular Neurology Physician providers across 49 states in the US. The average Vascular Neurology Physician provider writes 378 Medicare Part D claims per year.
What drugs does David Parrella, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, David Parrella, MD's most frequently prescribed drugs include Amitriptyline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Parrella, MD accept Medicare? ▼
David Parrella, MD appears in CMS Medicare data with 24 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 David Parrella, MD's credentials? ▼
David Parrella, MD's NPI is 1225233141 with credentials MD. 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
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.