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2026 NPPES data Specialist NPI 1295798304 M.D.
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Louis Alpern, M.D.

Specialist in El Paso, 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 69,567 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
18
Medicare Part D claims · Specialist avg: 2K
MIPS score
99/100
▲ 16 pts above national avg 83.5 · Exceptional
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Louis Alpern, M.D. reported a CMS MIPS final score of 99/100 - above the 83.5 national average - and filed 18 Medicare Part D claims in 2024.

99/100
MIPS score · +16 vs avg
18
Part D claims, 2024
≥91st
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 Louis Alpern, 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 1295798304), first enumerated 04/10/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 18 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 99/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • State context

    State board disciplinary context

    Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Louis Alpern, 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 1295798304 · Specialist

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-ELITE · RX-TRACE · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1295798304
  • ENUM-LEGACY 2006
  • TAX-MEGA 70K Specialist
  • MIPS-ELITE 99/100
  • RX-TRACE 18
  • BOOK-LIGHT 2,380 in Texas
  • PHOTO-FINISH Edward Tackey · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Louis Alpern, 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.

99 ≥ 91st percentile 91% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

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 Louis Alpern, M.D. sits

This provider among specialist peers

Across the 4,261 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Louis Alpern, M.D. writes more Part D claims than 2% of them and scores higher on MIPS quality than 88% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 0Louis Alpern, M.D., Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 88
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one specialist peer from a representative sample of 60; the gold marker is Louis Alpern, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Louis Alpern, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 04/10/2006

NPI 1295798304

Primary specialty

Specialist

High-volume

69,567 US NPIs in this specialty

Medicare Part D claims

18 99% vs specialty avg

2024 prescription claims

Specialty avg: 1,524

MIPS final score

99/100 15.5 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Texas

How Specialist compares to other specialties among Texas providers

Texas providers
Behavior Technician6%Student in an Organized Heal…5.3%Family Nurse Practitioner4.5%Professional Counselor4.4%Pharmacist4.3%Speech-Language Pathologist3.9%Specialist0.5%
Largest specialties in Texas (% of in-state providers)

Medicare quality performance, MIPS

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

High performer (top quartile)
MIPS Final Score
99/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%99%
MIPS final score (Specialist) - 99/100 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).

Practice Address

4171 N MESA ST
El Paso, TX 79902
(915) 545-2333

Provider Details

NPI 1295798304
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 04/10/2006

CMS Quality Score (MIPS)

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

99
Final Score
Measured-score avg: 83.5
100
Quality
100
Cost
96
Promoting Interoperability

Reporting: Group practice

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 Louis Alpern, M.D.. To verify Louis Alpern, 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.

18
Total Claims
$571
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
35.633
Total Day Supply
934
Generic Drug Cost
$515

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
0.70
More Specialist in TX → All providers in Texas → Compare specialties →

Specialist Overview

How Louis Alpern, M.D. fits within the Specialist landscape nationally.

69,567
Specialist Providers in US
55
States with Specialist
1,524
Avg Claims per Provider

Louis Alpern, M.D.'s 18 claims are below the specialty average of 1,524.

Nationwide Specialist peers with similar MIPS or enrollment year

Two federal-record peer sets for Alpern, both outside Texas so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (99 here).

Edward Tackey 99 VA Douglas Sprung 99 FL Margaret Brown 99 TN Barton Wachs 99 CA

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

William Castillo Pittsburgh, PA Jeff Eggart Surfside Beach, SC L A Bauer Batesville, IN Ayman Alshami Pine Bluff, AR

Nearby Specialist Providers in Texas

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

One of 2,380 Specialist providers enrolled in Texas, 5 are shown here.

Beverly Abbott
Longview, TX
Dr. Magdy Abdelsayed
M.D.
Baytown, TX
Robin Abels
OTR
Carrollton, TX
Dr. Amr Abouleish
M.D.
Galveston, TX
Paul Abrell
ATC, L
El Paso, TX

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

Frequently Asked Questions

What is Louis Alpern, M.D.'s specialty? ▼
Louis Alpern, M.D. specializes in Specialist and practices in El Paso, Texas. Credentials: M.D..
How much does Louis Alpern, M.D. prescribe under Medicare Part D? ▼
In 2024, Louis Alpern, M.D. wrote 18 Medicare Part D claims totaling $571 in drug costs for N/A beneficiaries.
What is Louis Alpern, M.D.'s Medicare quality score? ▼
Louis Alpern, M.D. has a CMS MIPS Final Score of 99/100 (Quality: 100, Cost: 100). 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 Louis Alpern, M.D. located? ▼
Louis Alpern, M.D. is located at 4171 N MESA ST, El Paso, TX, 79902. Phone: (915) 545-2333.
What is Louis Alpern, M.D.'s NPI number? ▼
Louis Alpern, M.D.'s National Provider Identifier (NPI) is 1295798304, issued on 04/10/2006.
How many Specialist providers are there in the US? ▼
There are 69,567 Specialist providers across 55 states in the US. The average Specialist provider writes 1,524 Medicare Part D claims per year.
Does Louis Alpern, M.D. accept Medicare? ▼
Louis Alpern, M.D. appears in CMS Medicare data with 18 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 Louis Alpern, M.D.'s credentials? ▼
Louis Alpern, M.D.'s NPI is 1295798304 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

Compiled from official public sources by the editorial process.

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.