2026 NPPES data Specialist NPI 1508845645 M.D.
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ROBERT ALEXANDER, M.D.

Specialist in HOUMA, Louisiana. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
5K
Medicare Part D claims · 834 beneficiaries · Specialist avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
21.5289/100
▼ 62 pts below national avg 83.1 · [object Object]
What the federal data reveals: ROBERT ALEXANDER, M.D. is a Specialist ([object Object]) practicing in HOUMA, Louisiana with a Medicare Part D prescribing footprint of 5K claims across 834 beneficiaries — 6% brand-name prescribing . Their CMS MIPS Final Score of 21.5289/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: ROBERT ALEXANDER, M.D. reported a CMS MIPS final score of 21.5289 out of 100, below the 83.1 national average, and filed 4,550 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ROBERT ALEXANDER, M.D. at a glance

Below national average

NPI registry status

Active

Issued 01/16/2006

NPI 1508845645

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

4,550 209% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

MIPS final score

21.5289/100 61.571099999999994% pts

Below average band

vs 83.1 national avg

Specialty distribution in Louisiana

How Specialist compares to other specialties among Louisiana providers

Louisiana providers

Specialist share within Louisiana

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Louisiana

Medicare quality performance — MIPS

ROBERT ALEXANDER, M.D.'s 2023 MIPS final score plotted against the Specialist national average

Below national average
MIPS Final Score
21.5289/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Specialist) — 21.5289/100 vs national avg 83.1

0%100%National avg83%21.5%
MIPS final score (Specialist) — 21.5289/100 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 ALEXANDER, M.D. is a Specialist provider practicing in HOUMA, Louisiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1508845645. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ROBERT ALEXANDER, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 1020 SCHOOL ST, HOUMA, LA, 70360, with a listed phone of (985) 868-4320. NPI 1508845645 was issued on 01/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALEXANDER 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 4,550 prescription claims written by this provider, covering 834 Medicare beneficiaries and totaling roughly $186K in drug spend, split 6% brand-name and 94% generic by claim count, with an opioid prescribing rate of 0.5%. 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 21.5289/100 for the 2023 performance year (Quality 0, Cost 71.763), compared with the national average of 83.1.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

1020 SCHOOL ST
HOUMA, LA 70360

Provider Details

NPI 1508845645
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 01/16/2006

CMS Quality Score (MIPS)

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

21.5289
Final Score
Avg: 83.1
0
Quality
71.763
Cost

Reporting: Individual

Hospital and facility affiliations

Facilities where ROBERT ALEXANDER, 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.

PHYSICIAN PRACTICE PARTNERS
HOUMA, LA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

ROBERT ALEXANDER, M.D. — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 4,550 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.

4,550
Total Claims
$186K
Total Drug Cost
834
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,651
Total Day Supply
279,972
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$65K
Generic Drug Cost
$121K
Opioid Claims
21 (0.5% rate)
Antibiotic Claims
594

Patient Demographics

Average Patient Age
76.1 years
Avg HCC Risk Score
1.25
Gender Split
26% female / 74% male
Age Distribution
<65: 36, 65-74: 327, 75-84: 344, 85+: 127

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Finasteride
1,410
Tamsulosin Hcl
1,065
Nitrofurantoin
Nitrofurantoin Macrocrystal
175
Bicalutamide
144
Ciprofloxacin Hcl
119
Dutasteride
114
Allopurinol
109
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
99
Oxybutynin Chloride
99
Alfuzosin Hcl Er
Alfuzosin Hcl
96

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

Specialist Overview

How ROBERT ALEXANDER, M.D. fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

ROBERT ALEXANDER, M.D.'s 4,550 claims are above the specialty average of 1,474.

Nearby Specialist Providers in Louisiana

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

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT ALEXANDER, M.D.'s specialty?
ROBERT ALEXANDER, M.D. specializes in Specialist and practices in HOUMA, Louisiana. Credentials: M.D..
How much does ROBERT ALEXANDER, M.D. prescribe under Medicare Part D?
In 2023, ROBERT ALEXANDER, M.D. wrote 4,550 Medicare Part D claims totaling $186K in drug costs for 834 beneficiaries.
What is ROBERT ALEXANDER, M.D.'s Medicare quality score?
ROBERT ALEXANDER, M.D. has a CMS MIPS Final Score of 21.5289/100 (Quality: 0, Cost: 71.763). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ROBERT ALEXANDER, M.D. located?
ROBERT ALEXANDER, M.D. is located at 1020 SCHOOL ST, HOUMA, LA, 70360. Phone: (985) 868-4320.
What is ROBERT ALEXANDER, M.D.'s NPI number?
ROBERT ALEXANDER, M.D.'s National Provider Identifier (NPI) is 1508845645, issued on 01/16/2006.
Does ROBERT ALEXANDER, M.D. prescribe more brand-name or generic drugs?
ROBERT ALEXANDER, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $65K in brand drug costs.
Does ROBERT ALEXANDER, M.D. prescribe opioids?
Yes, ROBERT ALEXANDER, M.D. had 21 opioid claims in 2023 with an opioid prescribing rate of 0.5%.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does ROBERT ALEXANDER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ROBERT ALEXANDER, M.D.'s most frequently prescribed drugs include Finasteride, Tamsulosin Hcl, Nitrofurantoin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT ALEXANDER, M.D. accept Medicare?
ROBERT ALEXANDER, M.D. appears in CMS Medicare data with 4,550 Part D claims and 834 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT ALEXANDER, M.D.'s credentials?
ROBERT ALEXANDER, M.D.'s NPI is 1508845645 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