NPI registry status
Active
2026 NPPES data Anesthesiology Physician NPI 1447450796 M.D.
Verify on CMS → Robert Marks, M.D.
Anesthesiology Physician in Austin, 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 56,432 in Anesthesiology 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
2K
Medicare Part D claims · 317 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
47.4/100
▼ 36 pts below national avg 83.5 · Below average
Industry payments
$6.3K
105 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Robert Marks, M.D. reported a CMS MIPS final score of 47.4/100 - below the 83.5 national average - and filed 1,521 Medicare Part D claims in 2023.
- 47.4/100
- MIPS score · -36 vs avg
- 2K
- Part D claims, 2023
- 93%
- generic prescribing
- 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.
Robert Marks, 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.
47 ≥ 4th percentile 4% 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 Robert Marks, M.D. sits
This provider among anesthesiology physician peers
Across the 1,484 anesthesiology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Robert Marks, M.D. writes more Part D claims than 74% of them and scores higher on MIPS quality than 10% - placing this provider in the high-volume, lower-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 anesthesiology physician peer from a representative sample of 60; the gold marker is Robert Marks, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Robert Marks, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - 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 Robert Marks, M.D.?
Below national averagePrimary specialty
Anesthesiology Physician
Medicare Part D claims
1,521 77% vs specialty avg
MIPS final score
47.4/100 36.1 pts vs avg
Specialty distribution in Texas
How Anesthesiology Physician compares to other specialties among Texas providers
Medicare quality performance, MIPS
Robert Marks, M.D.'s 2023 MIPS final score plotted against the Anesthesiology Physician national average
- MIPS Final Score
- 47.4/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Anesthesiology Physician) - 47.4/100 vs national avg 83.5
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).
Robert Marks, M.D. appears in the CMS NPPES registry as an Anesthesiology Physician provider holding M.D. credentials at 12176 N MOPAC EXPY STE D, Austin, TX, 78758, with a listed phone of (512) 981-7246. NPI 1447450796 was issued on 07/24/2007.
Medicare Part D records for calendar year 2023 show 1,521 prescription claims written by this provider, covering 317 Medicare beneficiaries and totaling roughly $140K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 72.6%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 47.4/100 for the 2023 performance year (Quality 94.8), compared with the 83.5 average among clinicians with a measured score.
Anesthesiology Physician is a high-volume specialty nationwide, with 56,432 enrolled providers across 56 states and an average of 860 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 | 1447450796 |
|---|---|
| Specialty | Anesthesiology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/24/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
47.4242
Final Score
Measured-score avg: 83.5
94.8485
Quality
Reporting: Individual
Hospital and facility affiliations
Facilities where Robert Marks, 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.
Robert Marks MD PLLC
Austin, 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 Robert Marks, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$6.3K
Largest payer
Medtronic, Inc.
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 Robert Marks, M.D.. To verify Robert Marks, 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 · Generic-heavy
Robert Marks, M.D. - brand share 7.0%
Anesthesiology Physician average
7% brand-name claims vs 93% generic, on 1,521 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.
1,521
Total Claims
$140K
Total Drug Cost
317
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,655
- Total Day Supply
- 45,046
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $61K
- Generic Drug Cost
- $79K
- Opioid Claims
- 1,104 (72.6% rate)
Patient Demographics
- Average Patient Age
- 67.5 years
- Avg HCC Risk Score
- 1.76
- Gender Split
- 69% female / 31% male
- Age Distribution
- <65: 91, 65-74: 151, 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.
What Robert Marks, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
497 claims
- Oxycodone Hcl 129
Oxycodone Hcl
129 claims
- Oxycodone-Acetamin… 105
Oxycodone-Acetaminophen
105 claims
- Meloxicam 85
Meloxicam
85 claims
- Morphine Sulfate Er 78
Morphine Sulfate Er
78 claims
- Fentanyl 69
Fentanyl
69 claims
- Duloxetine Hcl 53
Duloxetine Hcl
53 claims
- Hydromorphone Hcl 53
Hydromorphone Hcl
53 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 497 |
| Oxycodone Hcl | 129 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 105 |
| Meloxicam | 85 |
| Morphine Sulfate Er Morphine Sulfate | 78 |
| Fentanyl | 69 |
| Duloxetine Hcl | 53 |
| Hydromorphone Hcl | 53 |
| Gabapentin | 47 |
| Celecoxib | 45 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Anesthesiology Physician Overview
How Robert Marks, M.D. fits within the Anesthesiology Physician landscape nationally.
56,432
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider
Robert Marks, M.D.'s 1,521 claims are above the specialty average of 860.
Nearby Anesthesiology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Marks.
Dr. Asle Aarsland
M.D.
Galveston, TX
Dr. Maryann Abanobi
MD
Dallas, TX
Dr. Mohamad Abdalla
MD
Dallas, TX
Ayham Abdel
San Antonio, TX
Dr. Ahmed Abdel Rahman
MD, FRCPC, MBA
Rockwall, TX
Compare Anesthesiology 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 Anesthesiology 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 Robert Marks, M.D.'s specialty? ▼
Robert Marks, M.D. specializes in Anesthesiology Physician and practices in Austin, Texas. Credentials: M.D..
How much does Robert Marks, M.D. prescribe under Medicare Part D? ▼
In 2023, Robert Marks, M.D. wrote 1,521 Medicare Part D claims totaling $140K in drug costs for 317 beneficiaries.
What is Robert Marks, M.D.'s Medicare quality score? ▼
Robert Marks, M.D. has a CMS MIPS Final Score of 47.4/100 (Quality: 94.8). 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 Robert Marks, M.D. located? ▼
Robert Marks, M.D. is located at 12176 N MOPAC EXPY STE D, Austin, TX, 78758. Phone: (512) 981-7246.
What is Robert Marks, M.D.'s NPI number? ▼
Robert Marks, M.D.'s National Provider Identifier (NPI) is 1447450796, issued on 07/24/2007.
Does Robert Marks, M.D. prescribe more brand-name or generic drugs? ▼
Robert Marks, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $61K in brand drug costs.
Does Robert Marks, M.D. prescribe opioids? ▼
Yes, Robert Marks, M.D. had 1,104 opioid claims in 2023 with an opioid prescribing rate of 72.6%.
How many Anesthesiology Physician providers are there in the US? ▼
There are 56,432 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does Robert Marks, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Robert Marks, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone Hcl, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Marks, M.D. accept Medicare? ▼
Robert Marks, M.D. appears in CMS Medicare data with 1,521 Part D claims and 317 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Marks, M.D.'s credentials? ▼
Robert Marks, M.D.'s NPI is 1447450796 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.
- 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.