NPI registry status
Active
2026 NPPES data Specialist NPI 1427055326 MD
Verify on CMS → Donald Lazas, MD
Specialist in Hermitage, 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 69,608 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
265
Medicare Part D claims · 97 beneficiaries · Specialist avg: 1K
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
92.5/100
▲ 9 pts above national avg 83.5 · Exceptional
Industry payments
$31.21
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Donald Lazas, MD reported a CMS MIPS final score of 92.5/100 - above the 83.5 national average - and filed 265 Medicare Part D claims in 2023.
- 92.5/100
- MIPS score · +9 vs avg
- 265
- Part D claims, 2023
- 82%
- generic prescribing
- $31.21
- industry payments (Sunshine Act)
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 Donald Lazas, MD
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 1427055326), first enumerated 07/07/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 265 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 92.5/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Industry payment transparency
$31.21 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1427055326 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-ABOVE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1427055326
- ENUM-LEGACY 2005
- TAX-MEGA 70K Specialist
- MIPS-ABOVE 92.5/100
- RX-LIGHT 265
- BOOK-LIGHT 944 in Tennessee
- PHOTO-FINISH Farhad Naseh · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Kimberly Carpent…
Kimberly Carpenter
92.4 MIPS pts
- Eric Baum · near
Eric Baum
92.4 MIPS pts
- Jerry Cooper · n…
Jerry Cooper
92.4 MIPS pts
- Lazas · this pro…
Lazas · this provider
92.5 MIPS pts
- Farhad Naseh · h…
Farhad Naseh
92.5 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Donald Lazas, MD'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.
93 ≥ 66th percentile 66% 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 Donald Lazas, MD sits
This provider among specialist peers
Across the 4,261 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Donald Lazas, MD writes more Part D claims than 27% of them and scores higher on MIPS quality than 71% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one specialist peer from a representative sample of 60; the gold marker is Donald Lazas, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Donald Lazas, MD?
High performer (top quartile)Primary specialty
Specialist
Medicare Part D claims
265 82% vs specialty avg
MIPS final score
92.5/100 9 pts vs avg
Specialty distribution in Tennessee
How Specialist compares to other specialties among Tennessee providers
Medicare quality performance, MIPS
Donald Lazas, MD's 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 92.5/100
- 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 | 1427055326 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/07/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
92.4617
Final Score
Measured-score avg: 83.5
90.4142
Quality
84.4583
Cost
100
Promoting Interoperability
Reporting: Group practice
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 Donald Lazas, MD. Source: openpaymentsdata.cms.gov.
Total received
$31
Largest payer
Celgene Corporation
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.
Brand vs generic prescribing mix · Typical
Donald Lazas, MD - brand share 18.0%
Specialist average
18% brand-name claims vs 82% generic, on 265 2023 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 2023.
265
Total Claims
$76K
Total Drug Cost
97
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 590
- Total Day Supply
- 17,164
- Brand vs Generic
- 18% brand / 82% generic
- Brand Drug Cost
- $59K
- Generic Drug Cost
- $17K
- Antibiotic Claims
- 15
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 1.37
- Gender Split
- 44% female / 56% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Donald Lazas, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
79 claims
- Omeprazole
Omeprazole
54 claims
- Dicyclomine Hcl 18
Dicyclomine Hcl
18 claims
- Linzess 16
Linzess
16 claims
- Xifaxan 13
Xifaxan
13 claims
- Balsalazide Disodium 11
Balsalazide Disodium
11 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 79 |
| Omeprazole | 54 |
| Dicyclomine Hcl | 18 |
| Linzess Linaclotide | 16 |
| Xifaxan Rifaximin | 13 |
| Balsalazide Disodium | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Donald Lazas, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Donald Lazas, MD's 265 claims are below the specialty average of 1,474.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Lazas, both outside Tennessee so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (92.5 here).
Same NPPES enumeration year (2005)
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 Lazas.
One of 944 Specialist providers enrolled in Tennessee, 5 are shown here.
Dr. Salim Abdun
PT
Cordova, TN
Dr. 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 Donald Lazas, MD's specialty? ▼
Donald Lazas, MD specializes in Specialist and practices in Hermitage, Tennessee. Credentials: MD.
How much does Donald Lazas, MD prescribe under Medicare Part D? ▼
In 2023, Donald Lazas, MD wrote 265 Medicare Part D claims totaling $76K in drug costs for 97 beneficiaries.
What is Donald Lazas, MD's Medicare quality score? ▼
Donald Lazas, MD has a CMS MIPS Final Score of 92.5/100 (Quality: 90.4, Cost: 84.5). 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 Donald Lazas, MD located? ▼
Donald Lazas, MD is located at 5653 FRIST BLVD, Hermitage, TN, 37076. Phone: (615) 885-1093.
What is Donald Lazas, MD's NPI number? ▼
Donald Lazas, MD's National Provider Identifier (NPI) is 1427055326, issued on 07/07/2005.
Does Donald Lazas, MD prescribe more brand-name or generic drugs? ▼
Donald Lazas, MD's prescribing is 18% brand-name and 82% generic drugs by claim count, with $59K in brand drug costs.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Donald Lazas, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Donald Lazas, MD's most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Dicyclomine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Donald Lazas, MD accept Medicare? ▼
Donald Lazas, MD appears in CMS Medicare data with 265 Part D claims and 97 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Donald Lazas, MD's credentials? ▼
Donald Lazas, MD's NPI is 1427055326 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.
- 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 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.