NPI registry status
Active
2026 NPPES data Vascular Surgery Physician NPI 1326024308 M.D.
Verify on CMS → William Dallas, M.D.
Vascular Surgery Physician in Oak Ridge, 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 4,362 in Vascular Surgery 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
526
Medicare Part D claims · 194 beneficiaries · Vascular Surgery Physician avg: 211
What the federal data shows
William Dallas, M.D. filed 526 Medicare Part D claims in 2024 as a Vascular Surgery Physician in Oak Ridge, Tennessee.
- 526
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥65th
- 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 Dallas, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1326024308), first enumerated 12/21/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 526 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- 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 1326024308 · Vascular Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1326024308
- ENUM-LEGACY 2005
- TAX-NARROW 4,362
- RX-LIGHT 526
- BOOK-THIN 105 in Tennessee
- PHOTO-ENUM Charles Peterson · 2005
William Dallas, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
526 ≥ 65th percentile 65% 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
✓
Board certification likely (heuristic, not verified)
William Dallas, M.D. 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 William Dallas, M.D.?
Quality data not reportedPrimary specialty
Vascular Surgery Physician
Medicare Part D claims
526 149% vs specialty avg
Specialty distribution in Tennessee
How Vascular Surgery 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 Surgery 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).
Practice Address
Provider Details
| NPI | 1326024308 |
|---|---|
| Specialty | Vascular Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 12/21/2005 |
Hospital and facility affiliations
Facilities where William Dallas, M.D. 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.
Covenant Medical Group Inc
Oak Ridge, TN
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
526
Total Claims
$49K
Total Drug Cost
194
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 786.033
- Total Day Supply
- 17,598
- Generic Drug Cost
- $10K
- Opioid Claims
- 125 (23.8% rate)
- Antibiotic Claims
- 72
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 2.06
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 36, 65-74: 85, 75-84: 60, 85+: 13
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Dallas, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Clopidogrel
Clopidogrel
97 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
87 claims
- Cilostazol 34
Cilostazol
34 claims
- Cephalexin 32
Cephalexin
32 claims
- Tramadol Hcl 25
Tramadol Hcl
25 claims
- Eliquis 21
Eliquis
21 claims
- Meloxicam 21
Meloxicam
21 claims
- Doxycycline Hyclate 17
Doxycycline Hyclate
17 claims
| Drug | Claims |
|---|---|
| Clopidogrel Clopidogrel Bisulfate | 97 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 87 |
| Cilostazol | 34 |
| Cephalexin | 32 |
| Tramadol Hcl | 25 |
| Eliquis Apixaban | 21 |
| Meloxicam | 21 |
| Doxycycline Hyclate | 17 |
| Atorvastatin Calcium | 16 |
| Pantoprazole Sodium | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Vascular Surgery Physician Overview
How William Dallas, M.D. fits within the Vascular Surgery Physician landscape nationally.
4,362
Vascular Surgery Physician Providers in US
53
States with Vascular Surgery Physician
211
Avg Claims per Provider
William Dallas, M.D.'s 526 claims are above the specialty average of 211.
Nationwide Vascular Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Dallas, both outside Tennessee 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 Vascular Surgery Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Dallas.
One of 105 Vascular Surgery Physician providers enrolled in Tennessee, 5 are shown here.
Dr. Wahid Abadier
MD
Lenoir City, TN
Dr. Donald Akers
M.D.
Knoxville, TN
Dr. Ziad Al Adas
MD
Nashville, TN
Dr. Terry Allen
M.D.
Nashville, TN
Hamda Almaazmi
MBBS
Memphis, TN
Compare Vascular Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Dallas, M.D.'s specialty? ▼
William Dallas, M.D. specializes in Vascular Surgery Physician and practices in Oak Ridge, Tennessee. Credentials: M.D..
How much does William Dallas, M.D. prescribe under Medicare Part D? ▼
In 2024, William Dallas, M.D. wrote 526 Medicare Part D claims totaling $49K in drug costs for 194 beneficiaries.
Where is William Dallas, M.D. located? ▼
William Dallas, M.D. is located at 120 ADMINISTRATION RD, Oak Ridge, TN, 37830. Phone: (865) 483-7030.
What is William Dallas, M.D.'s NPI number? ▼
William Dallas, M.D.'s National Provider Identifier (NPI) is 1326024308, issued on 12/21/2005.
Does William Dallas, M.D. prescribe opioids? ▼
Yes, William Dallas, M.D. had 125 opioid claims in 2024 with an opioid prescribing rate of 23.8%.
How many Vascular Surgery Physician providers are there in the US? ▼
There are 4,362 Vascular Surgery Physician providers across 53 states in the US. The average Vascular Surgery Physician provider writes 211 Medicare Part D claims per year.
What drugs does William Dallas, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, William Dallas, M.D.'s most frequently prescribed drugs include Clopidogrel, Hydrocodone-Acetaminophen, Cilostazol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Dallas, M.D. accept Medicare? ▼
William Dallas, M.D. appears in CMS Medicare data with 526 Part D claims and 194 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Dallas, M.D.'s credentials? ▼
William Dallas, M.D.'s NPI is 1326024308 with credentials M.D.. 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.