NPI registry status
Active
2026 NPPES data Nuclear Medicine Physician NPI 1861446635 PHD MD
Verify on CMS → Landis Griffeth, PHD MD
Nuclear Medicine Physician in Dallas, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 913 in Nuclear Medicine 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
26
Medicare Part D claims · Nuclear Medicine Physician avg: 881
MIPS score
87.6/100
▲ 4 pts above national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Landis Griffeth, PHD MD reported a CMS MIPS final score of 87.6/100 - above the 83.1 national average - and filed 26 Medicare Part D claims in 2023.
- 87.6/100
- MIPS score · +4 vs avg
- 26
- 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.
Landis Griffeth, PHD MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
88 Top 46% higher than 54% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Landis Griffeth, PHD MD sits
This provider among nuclear medicine physician peers
Across the 25 nuclear medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Landis Griffeth, PHD MD writes more Part D claims than 36% of them and scores higher on MIPS quality than 68% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one nuclear medicine physician peer from a representative sample of 24; the gold marker is Landis Griffeth, PHD MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Landis Griffeth, PHD MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Landis Griffeth, PHD MD?
High performer (top quartile)Primary specialty
Nuclear Medicine Physician
Medicare Part D claims
26 97% vs specialty avg
MIPS final score
87.6/100 4.5 pts vs avg
Specialty distribution in Texas
How Nuclear Medicine Physician compares to other specialties among Texas providers
Medicare quality performance, MIPS
Landis Griffeth, PHD MD's 2023 MIPS final score plotted against the Nuclear Medicine Physician national average
- MIPS Final Score
- 87.6/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Nuclear Medicine Physician) - 87.6/100 vs national avg 83.1
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).
Landis Griffeth, PHD MD appears in the CMS NPPES registry as a Nuclear Medicine Physician provider holding PHD MD credentials at 3500 GASTON AVENUE, Dallas, TX, 75246, with a listed phone of (214) 826-8822. NPI 1861446635 was issued on 05/19/2006.
Medicare Part D records for calendar year 2023 show 26 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $939 in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.6/100 for the 2023 performance year (Quality 97.1, Cost 58.8), compared with the national average of 83.1.
Nuclear Medicine Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 881 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 | 1861446635 |
|---|---|
| Specialty | Nuclear Medicine Physician |
| Credentials | PHD MD |
| Gender | Male |
| NPI Issued | 05/19/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
87.5718
Final Score
Avg: 83.1
97.1078
Quality
58.7812
Cost
Reporting: Group practice
License & disciplinary context - Texas TMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 - they are NOT specific to Landis Griffeth, PHD MD. To verify Landis Griffeth, PHD MD's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
26
Total Claims
$939
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 74
- Total Day Supply
- 2,220
- Generic Drug Cost
- $717
Patient Demographics
- Average Patient Age
- 67.5 years
- Avg HCC Risk Score
- 0.26
Nuclear Medicine Physician Overview
How Landis Griffeth, PHD MD fits within the Nuclear Medicine Physician landscape nationally.
913
Nuclear Medicine Physician Providers in US
48
States with Nuclear Medicine Physician
881
Avg Claims per Provider
Landis Griffeth, PHD MD's 26 claims are below the specialty average of 881.
Nearby Nuclear Medicine Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Griffeth.
Dr. Anshul Agarwal
MD, PHD
Dallas, TX
Dr. Anupa Arora
M.D.
Houston, TX
Dr. Ravi Ashwath
MD
San Antonio, TX
Dr. Ahmad Bakdalieh
MD
Houston, TX
Dr. Kevin Banks
M.D.
Ft Sam Houston, TX
Compare Nuclear Medicine 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 Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Nuclear Medicine 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.
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Frequently Asked Questions
What is Landis Griffeth, PHD MD's specialty? ▼
Landis Griffeth, PHD MD specializes in Nuclear Medicine Physician and practices in Dallas, Texas. Credentials: PHD MD.
How much does Landis Griffeth, PHD MD prescribe under Medicare Part D? ▼
In 2023, Landis Griffeth, PHD MD wrote 26 Medicare Part D claims totaling $939 in drug costs for N/A beneficiaries.
What is Landis Griffeth, PHD MD's Medicare quality score? ▼
Landis Griffeth, PHD MD has a CMS MIPS Final Score of 87.6/100 (Quality: 97.1, Cost: 58.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Landis Griffeth, PHD MD located? ▼
Landis Griffeth, PHD MD is located at 3500 GASTON AVENUE, Dallas, TX, 75246. Phone: (214) 826-8822.
What is Landis Griffeth, PHD MD's NPI number? ▼
Landis Griffeth, PHD MD's National Provider Identifier (NPI) is 1861446635, issued on 05/19/2006.
How many Nuclear Medicine Physician providers are there in the US? ▼
There are 913 Nuclear Medicine Physician providers across 48 states in the US. The average Nuclear Medicine Physician provider writes 881 Medicare Part D claims per year.
Does Landis Griffeth, PHD MD accept Medicare? ▼
Landis Griffeth, PHD MD appears in CMS Medicare data with 26 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 Landis Griffeth, PHD MD's credentials? ▼
Landis Griffeth, PHD MD's NPI is 1861446635 with credentials PHD 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
Compiled from official public sources by the PlainDoctor editorial team.