NPI registry status
Active
2026 NPPES data Pediatric Medical Toxicology Physician NPI 1205239332 M.D.
Verify on CMS → Stephen Harding, M.D.
Pediatric Medical Toxicology Physician in Houston, 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 14 in Pediatric Medical Toxicology 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
13
Medicare Part D claims · Pediatric Medical Toxicology Physician avg: 13
MIPS score
84.1/100
▲ 1 pts above national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Stephen Harding, M.D. reported a CMS MIPS final score of 84.1/100 - above the 83.5 national average - and filed 13 Medicare Part D claims in 2024.
- 84.1/100
- MIPS score · +1 vs avg
- 13
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥42nd
- pct among measured MIPS (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 Stephen Harding, M.D.
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 1205239332), first enumerated 10/03/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 13 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 84.1/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- 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
3 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Stephen Harding, M.D.'s individual license status. Verify directly with the state medical board.
Source: TMB annual report 2023
- 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 1205239332 · Pediatric Medical Toxicology Physician
NPI-10 · ENUM-MID · TAX-TRACE · MIPS-INLINE · RX-TRACE · BOOK-THIN · PHOTO-SOLO
- NPI-10 1205239332
- ENUM-MID 2014
- TAX-TRACE 14
- MIPS-INLINE 84.1/100
- RX-TRACE 13
- BOOK-THIN 3 in Texas
- PHOTO-SOLO Peer n/a
Stephen Harding, M.D.'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.
84 ≥ 42nd percentile 42% 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
✓
Board certification likely (heuristic, not verified)
Stephen Harding, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations - 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 Stephen Harding, M.D.?
Near national averagePrimary specialty
Pediatric Medical Toxicology Physician
Medicare Part D claims
13 0% vs specialty avg
MIPS final score
84.1/100 0.6 pts vs avg
Specialty distribution in Texas
How Pediatric Medical Toxicology Physician compares to other specialties among Texas providers
Medicare quality performance, MIPS
Stephen Harding, M.D.'s 2023 MIPS final score plotted against the Pediatric Medical Toxicology Physician national average
- MIPS Final Score
- 84.1/100
- 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 | 1205239332 |
|---|---|
| Specialty | Pediatric Medical Toxicology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/03/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
84.059
Final Score
Measured-score avg: 83.5
84.4904
Quality
54.3968
Cost
Reporting: Group practice
Hospital and facility affiliations
Facilities where Stephen Harding, 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.
According to CMS billing records, Stephen Harding, M.D. is affiliated with 3 Medicare-billing facilities.
Baylor College OF Medicine
Houston, TX
Baylor College OF Medicine
Houston, TX
Texas Childrens Physician Group
Houston, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Stephen Harding, M.D.. To verify Stephen Harding, M.D.'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 2024.
13
Total Claims
$109
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13
- Total Day Supply
- 77
- Brand Drug Cost
- $0
- Generic Drug Cost
- $109
Patient Demographics
- Average Patient Age
- 64.0 years
- Avg HCC Risk Score
- 1.54
Pediatric Medical Toxicology Physician Overview
How Stephen Harding, M.D. fits within the Pediatric Medical Toxicology Physician landscape nationally.
14
Pediatric Medical Toxicology Physician Providers in US
10
States with Pediatric Medical Toxicology Physician
13
Avg Claims per Provider
Stephen Harding, M.D.'s 13 claims are below the specialty average of 13.
Nearby Pediatric Medical Toxicology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Harding.
One of 3 Pediatric Medical Toxicology Physician providers enrolled in Texas, 2 are shown here.
Compare Pediatric Medical Toxicology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephen Harding, M.D.'s specialty? ▼
Stephen Harding, M.D. specializes in Pediatric Medical Toxicology Physician and practices in Houston, Texas. Credentials: M.D..
How much does Stephen Harding, M.D. prescribe under Medicare Part D? ▼
In 2024, Stephen Harding, M.D. wrote 13 Medicare Part D claims totaling $109 in drug costs for N/A beneficiaries.
What is Stephen Harding, M.D.'s Medicare quality score? ▼
Stephen Harding, M.D. has a CMS MIPS Final Score of 84.1/100 (Quality: 84.5, Cost: 54.4). 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 Stephen Harding, M.D. located? ▼
Stephen Harding, M.D. is located at 6621 FANNIN ST, Houston, TX, 77030. Phone: (832) 824-1000.
What is Stephen Harding, M.D.'s NPI number? ▼
Stephen Harding, M.D.'s National Provider Identifier (NPI) is 1205239332, issued on 10/03/2014.
How many Pediatric Medical Toxicology Physician providers are there in the US? ▼
There are 14 Pediatric Medical Toxicology Physician providers across 10 states in the US. The average Pediatric Medical Toxicology Physician provider writes 13 Medicare Part D claims per year.
Does Stephen Harding, M.D. accept Medicare? ▼
Stephen Harding, M.D. appears in CMS Medicare data with 13 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephen Harding, M.D.'s credentials? ▼
Stephen Harding, M.D.'s NPI is 1205239332 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.
- 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 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.