NPI registry status
Active
2026 NPPES data Specialist NPI 1255428231 MD
Verify on CMS → Edward Workman, MD
Specialist in Knoxville, 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 69,567 in 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
542
Medicare Part D claims · 29 beneficiaries · Specialist avg: 2K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Edward Workman, MD filed 542 Medicare Part D claims in 2024 as a Specialist in Knoxville, Tennessee, prescribing 98% generic.
- 542
- Part D claims, 2024
- 98%
- generic prescribing
- ≥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 Edward Workman, MD
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 1255428231), first enumerated 10/09/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 542 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 1255428231 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1255428231
- ENUM-LEGACY 2006
- TAX-MEGA 70K Specialist
- RX-LIGHT 542
- BOOK-LIGHT 927 in Tennessee
- PHOTO-ENUM Robert Lebovics · 2006
Edward Workman, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
542 ≥ 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
What does the federal data show about Edward Workman, MD?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
542 64% vs specialty avg
Specialty distribution in Tennessee
How Specialist 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 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 | 1255428231 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/09/2006 |
Brand vs generic prescribing mix · Generic-heavy
Edward Workman, MD - brand share 2.0%
Specialist average
2% brand-name claims vs 98% generic, on 542 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.
542
Total Claims
$27K
Total Drug Cost
29
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 596.667
- Total Day Supply
- 17,115
- Brand vs Generic
- 2% brand / 98% generic
- Brand Drug Cost
- $4K
- Generic Drug Cost
- $24K
- Opioid Claims
- 163 (30.1% rate)
Patient Demographics
- Average Patient Age
- 65.2 years
- Avg HCC Risk Score
- 1.30
- Gender Split
- 48% female / 52% male
- Age Distribution
- <65: 11, 65-74: 16, 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 Edward Workman, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
115 claims
- Gabapentin
Gabapentin
68 claims
- Tizanidine Hcl 38
Tizanidine Hcl
38 claims
- Trazodone Hcl 36
Trazodone Hcl
36 claims
- Oxymorphone Hcl Er 35
Oxymorphone Hcl Er
35 claims
- Escitalopram Oxalate 31
Escitalopram Oxalate
31 claims
- Celecoxib 27
Celecoxib
27 claims
- Diclofenac Sodium 16
Diclofenac Sodium
16 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 115 |
| Gabapentin | 68 |
| Tizanidine Hcl | 38 |
| Trazodone Hcl | 36 |
| Oxymorphone Hcl Er Oxymorphone Hcl | 35 |
| Escitalopram Oxalate | 31 |
| Celecoxib | 27 |
| Diclofenac Sodium | 16 |
| Omeprazole | 16 |
| Ibuprofen | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Edward Workman, MD fits within the Specialist landscape nationally.
69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider
Edward Workman, MD's 542 claims are below the specialty average of 1,524.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Workman, both outside Tennessee so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Specialist Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Workman.
One of 927 Specialist providers enrolled in Tennessee, 5 are shown here.
Salim Abdun
PT
Cordova, TN
Colleen Able
PT
Memphis, TN
Dr. Ali Abualhayjaa
MD
Jackson, TN
Dr. John Adams
M.D.
Knoxville, TN
Dr. Thomas Adkins
M.D.
Nashville, TN
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Edward Workman, MD's specialty? ▼
Edward Workman, MD specializes in Specialist and practices in Knoxville, Tennessee. Credentials: MD.
How much does Edward Workman, MD prescribe under Medicare Part D? ▼
In 2024, Edward Workman, MD wrote 542 Medicare Part D claims totaling $27K in drug costs for 29 beneficiaries.
Where is Edward Workman, MD located? ▼
Edward Workman, MD is located at 110 PERIMETER PARK RD STE C, Knoxville, TN, 37922. Phone: (865) 862-0763.
What is Edward Workman, MD's NPI number? ▼
Edward Workman, MD's National Provider Identifier (NPI) is 1255428231, issued on 10/09/2006.
Does Edward Workman, MD prescribe more brand-name or generic drugs? ▼
Edward Workman, MD's prescribing is 2% brand-name and 98% generic drugs by claim count, with $4K in brand drug costs.
Does Edward Workman, MD prescribe opioids? ▼
Yes, Edward Workman, MD had 163 opioid claims in 2024 with an opioid prescribing rate of 30.1%.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
What drugs does Edward Workman, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Edward Workman, MD's most frequently prescribed drugs include Oxycodone Hcl, Gabapentin, Tizanidine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Edward Workman, MD accept Medicare? ▼
Edward Workman, MD appears in CMS Medicare data with 542 Part D claims and 29 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Edward Workman, MD's credentials? ▼
Edward Workman, MD's NPI is 1255428231 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 (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.