NPI registry status
Active
2026 NPPES data Specialist NPI 1558459735 M.D.
Verify on CMS → Carol Norton, M.D.
Specialist in Richardson, 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 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
50
Medicare Part D claims · 20 beneficiaries · Specialist avg: 1K
Generic prescribing
0%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$157.86
5 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Carol Norton, M.D. filed 50 Medicare Part D claims in 2023 as a Specialist in Richardson, Texas, prescribing 0% generic.
- 50
- Part D claims, 2023
- 0%
- generic prescribing
- $157.86
- industry payments (Sunshine Act)
- ≥0th
- 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 Carol Norton, 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 1558459735), first enumerated 10/11/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 50 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$157.86 in reported industry payments (5 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Carol Norton, 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 1558459735 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1558459735
- ENUM-LEGACY 2006
- TAX-MEGA 70K Specialist
- RX-TRACE 50
- BOOK-LIGHT 2,421 in Texas
- PHOTO-ENUM David Grulke · 2006
Carol Norton, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
50 ≥ 0th percentile 0% of 1,370,886 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 · 2023
What does the federal data show about Carol Norton, M.D.?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
50 97% vs specialty avg
Specialty distribution in Texas
How Specialist compares to other specialties among Texas 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 | 1558459735 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 10/11/2006 |
Hospital and facility affiliations
Facilities where Carol Norton, 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.
Obhg Texas Holdings PA
Richardson, 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).
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 Carol Norton, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$158
Largest payer
Baxter Healthcare
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.
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 Carol Norton, M.D.. To verify Carol Norton, 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.
Brand vs generic prescribing mix · Brand-heavy
Carol Norton, M.D. - brand share 52.0%
Specialist average
52% brand-name claims vs 0% generic, on 50 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.
50
Total Claims
$9K
Total Drug Cost
20
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 83
- Total Day Supply
- 2,383
- Brand vs Generic
- 52% brand / 0% generic
- Brand Drug Cost
- $8K
Patient Demographics
- Average Patient Age
- 73.2 years
- Avg HCC Risk Score
- 0.71
- Gender Split
- 100% female / 0% male
- Age Distribution
- <65: 0, 65-74: 11, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Estradiol | 11 |
| Prempro "Estrogen | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Carol Norton, M.D. fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Carol Norton, M.D.'s 50 claims are below the specialty average of 1,474.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Norton, both outside Texas 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 Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Norton.
One of 2,421 Specialist providers enrolled in Texas, 5 are shown here.
Beverly Abbott
Longview, TX
Dr. Magdy Abdelsayed
M.D.
Baytown, TX
Dr. Robin Abels
OTR
Carrollton, TX
Dr. Amr Abouleish
M.D.
Galveston, TX
Dr. Paul Abrell
ATC, L
El Paso, TX
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Carol Norton, M.D.'s specialty? ▼
Carol Norton, M.D. specializes in Specialist and practices in Richardson, Texas. Credentials: M.D..
How much does Carol Norton, M.D. prescribe under Medicare Part D? ▼
In 2023, Carol Norton, M.D. wrote 50 Medicare Part D claims totaling $9K in drug costs for 20 beneficiaries.
Where is Carol Norton, M.D. located? ▼
Carol Norton, M.D. is located at 2821 E PRESIDENT GEORGE BUSH HWY STE 400, Richardson, TX, 75082. Phone: (972) 231-9144.
What is Carol Norton, M.D.'s NPI number? ▼
Carol Norton, M.D.'s National Provider Identifier (NPI) is 1558459735, issued on 10/11/2006.
Does Carol Norton, M.D. prescribe more brand-name or generic drugs? ▼
Carol Norton, M.D.'s prescribing is 52% brand-name and 0% generic drugs by claim count, with $8K 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 Carol Norton, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Carol Norton, M.D.'s most frequently prescribed drugs include Estradiol, Prempro. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Carol Norton, M.D. accept Medicare? ▼
Carol Norton, M.D. appears in CMS Medicare data with 50 Part D claims and 20 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carol Norton, M.D.'s credentials? ▼
Carol Norton, M.D.'s NPI is 1558459735 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 (2023). 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 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.