2026 NPPES data Urology Physician NPI 1649202730 M.D.
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Robert Marx, M.D.

Urology Physician in West Monroe, Louisiana. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 13,350 in Urology 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 · 373 beneficiaries · Urology Physician avg: 1K
Generic prescribing
86%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · Penalty band
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Robert Marx, M.D. reported a CMS MIPS final score of 0/100 - below the 83.1 national average - and filed 2,171 Medicare Part D claims in 2023.

0/100
MIPS score · -83 vs avg
2K
Part D claims, 2023
86%
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 Marx, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

0 0th percentile higher than 0% of 477,587 scored providers

0–10: 8,684 scored providers (2%). This entry sits in this band. 10–20: 3,008 scored providers (1%). Above this entry. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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 Robert Marx, M.D. sits

This provider among urology physician peers

Across the 4,623 urology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Robert Marx, M.D. writes more Part D claims than 73% of them and scores higher on MIPS quality than 0% - 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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 87Robert Marx, M.D.-Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 0
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one urology physician peer from a representative sample of 60; the gold marker is Robert Marx, 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 Marx, M.D. 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 Robert Marx, M.D.?

Below national average

NPI registry status

Active

Issued 07/07/2006

NPI 1649202730

Primary specialty

Urology Physician

Mid-sized

13,350 US NPIs in this specialty

Medicare Part D claims

2,171 70% vs specialty avg

2023 prescription claims

Specialty avg: 1,280

MIPS final score

0/100 83.1 pts vs avg

Penalty band band

vs 83.1 national avg

Specialty distribution in Louisiana

How Urology Physician compares to other specialties among Louisiana providers

Louisiana providers

Largest specialties in Louisiana (% of in-state providers)

Case Manager/Care Coordinator - 9.6%Case Manager/Care Coordinator9.6%Mental Health Counselor - 7.3%Mental Health Counselor7.3%Behavior Technician - 5.3%Behavior Technician5.3%Pharmacist - 5.2%Pharmacist5.2%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Family Nurse Practitioner - 4.6%Family Nurse Practitioner4.6%Urology Physician - 0.2%Urology Physician0.2%
Largest specialties in Louisiana (% of in-state providers)

Medicare quality performance, MIPS

Robert Marx, M.D.'s 2023 MIPS final score plotted against the Urology Physician national average

Below national average
MIPS Final Score
0/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Urology Physician) - 0/100 vs national avg 83.1

0%100%National avg83%0%
MIPS final score (Urology Physician) - 0/100 vs national avg 83.1

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 Marx, M.D. appears in the CMS NPPES registry as a Urology Physician provider holding M.D. credentials at 102 THOMAS RD, West Monroe, LA, 71291, with a listed phone of (318) 329-8464. NPI 1649202730 was issued on 07/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Marx most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,171 prescription claims written by this provider, covering 373 Medicare beneficiaries and totaling roughly $185K in drug spend, split 13% brand-name and 86% generic by claim count, with an opioid prescribing rate of 3.3%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.

Urology Physician is a mid-sized specialty nationwide, with 13,350 enrolled providers across 54 states and an average of 1,280 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

102 THOMAS RD
West Monroe, LA 71291

Provider Details

NPI 1649202730
Specialty Urology Physician
Credentials M.D.
Gender Male
NPI Issued 07/07/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

0
Final Score
Avg: 83.1
0
Quality

Reporting: Individual

Brand vs generic prescribing mix · Typical

Robert Marx, M.D. - brand share 13.0%
Urology Physician average

13% brand-name claims vs 86% generic, on 2,171 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.

2,171
Total Claims
$185K
Total Drug Cost
373
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,478
Total Day Supply
93,642
Brand vs Generic
13% brand / 86% generic
Brand Drug Cost
$126K
Generic Drug Cost
$58K
Opioid Claims
72 (3.3% rate)
Antibiotic Claims
380

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.19
Gender Split
65% female / 35% male
Age Distribution
<65: 20, 65-74: 166, 75-84: 165, 85+: 22

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Robert Marx, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Finasteride
274
Estradiol
238
Tamsulosin Hcl
192
Myrbetriq
Mirabegron
101
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
90
Gemtesa
Vibegron
89
Nitrofurantoin
Nitrofurantoin Macrocrystal
77
Cephalexin
76
Potassium Citrate Er
Potassium Citrate
70
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
69

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Urology Physician Overview

How Robert Marx, M.D. fits within the Urology Physician landscape nationally.

13,350
Urology Physician Providers in US
54
States with Urology Physician
1,280
Avg Claims per Provider

Robert Marx, M.D.'s 2,171 claims are above the specialty average of 1,280.

Nearby Urology Physician Providers in Louisiana

Other clinicians with the same primary specialty enrolled in Louisiana, drawn from the same CMS NPPES roster as Marx.

Compare Urology 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 Louisiana medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Urology 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.

Frequently Asked Questions

What is Robert Marx, M.D.'s specialty?
Robert Marx, M.D. specializes in Urology Physician and practices in West Monroe, Louisiana. Credentials: M.D..
How much does Robert Marx, M.D. prescribe under Medicare Part D?
In 2023, Robert Marx, M.D. wrote 2,171 Medicare Part D claims totaling $185K in drug costs for 373 beneficiaries.
What is Robert Marx, M.D.'s Medicare quality score?
Robert Marx, M.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Robert Marx, M.D. located?
Robert Marx, M.D. is located at 102 THOMAS RD, West Monroe, LA, 71291. Phone: (318) 329-8464.
What is Robert Marx, M.D.'s NPI number?
Robert Marx, M.D.'s National Provider Identifier (NPI) is 1649202730, issued on 07/07/2006.
Does Robert Marx, M.D. prescribe more brand-name or generic drugs?
Robert Marx, M.D.'s prescribing is 13% brand-name and 86% generic drugs by claim count, with $126K in brand drug costs.
Does Robert Marx, M.D. prescribe opioids?
Yes, Robert Marx, M.D. had 72 opioid claims in 2023 with an opioid prescribing rate of 3.3%.
How many Urology Physician providers are there in the US?
There are 13,350 Urology Physician providers across 54 states in the US. The average Urology Physician provider writes 1,280 Medicare Part D claims per year.
What drugs does Robert Marx, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Robert Marx, M.D.'s most frequently prescribed drugs include Finasteride, Estradiol, Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Marx, M.D. accept Medicare?
Robert Marx, M.D. appears in CMS Medicare data with 2,171 Part D claims and 373 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Marx, M.D.'s credentials?
Robert Marx, M.D.'s NPI is 1649202730 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

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.