2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1306258884 M.D.
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ALEJANDRA RIERA GONZALEZ, M.D.

Endocrinology, Diabetes & Metabolism Physician in MARRERO, 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
1K
Medicare Part D claims · 266 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
40%
generic claims · 60% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.9086/100
▲ 14 pts above national avg 83.1 · [object Object]
Industry payments
$1.5K
77 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ALEJANDRA RIERA GONZALEZ, M.D. is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in MARRERO, Louisiana with a Medicare Part D prescribing footprint of 1K claims across 266 beneficiaries — 60% brand-name prescribing . Their CMS MIPS Final Score of 96.9086/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $1.5K across 77 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ALEJANDRA RIERA GONZALEZ, M.D. reported a CMS MIPS final score of 96.9086 out of 100, above the 83.1 national average, and filed 1,323 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ALEJANDRA RIERA GONZALEZ, 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).

ALEJANDRA RIERA GONZALEZ, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/02/2014

NPI 1306258884

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

1,323 50% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

MIPS final score

96.9086/100 13.808600000000013% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Louisiana

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Louisiana providers

Louisiana providers

Endocrinology, Diabetes & Metabolism Physician share within Louisiana

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within Louisiana

Medicare quality performance — MIPS

ALEJANDRA RIERA GONZALEZ, M.D.'s 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average

High performer (top quartile)
MIPS Final Score
96.9086/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 96.9086/100 vs national avg 83.1

0%100%National avg83%96.9%
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 96.9086/100 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).

ALEJANDRA RIERA GONZALEZ, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider practicing in MARRERO, Louisiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1306258884. 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.

ALEJANDRA RIERA GONZALEZ, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 1111 MEDICAL CENTER BLVD STE S850, MARRERO, LA, 70072, with a listed phone of (504) 349-6450. NPI 1306258884 was issued on 06/02/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RIERA GONZALEZ 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 1,323 prescription claims written by this provider, covering 266 Medicare beneficiaries and totaling roughly $850K in drug spend, split 60% brand-name and 40% generic by claim count. 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 96.9086/100 for the 2023 performance year (Quality 77.779), compared with the national average of 83.1.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

1111 MEDICAL CENTER BLVD STE S850
MARRERO, LA 70072

Provider Details

NPI 1306258884
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials M.D.
Gender Female
NPI Issued 06/02/2014

CMS Quality Score (MIPS)

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

96.9086
Final Score
Avg: 83.1
77.779
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where ALEJANDRA RIERA GONZALEZ, 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.

NEW ORLEANS PHYSICIAN SERVICES INC
MARRERO, 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).

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 ALEJANDRA RIERA GONZALEZ, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.5K

Largest payer

Novo Nordisk 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.

Brand vs generic prescribing mix · Brand-heavy

ALEJANDRA RIERA GONZALEZ, M.D. — brand share 60.0%
Specialty average (est.)

60% brand-name claims vs 40% generic, on 1,323 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.

1,323
Total Claims
$850K
Total Drug Cost
266
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,849
Total Day Supply
83,995
Brand vs Generic
60% brand / 40% generic
Brand Drug Cost
$824K
Generic Drug Cost
$16K

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
1.78
Gender Split
66% female / 34% male
Age Distribution
<65: 53, 65-74: 116, 75-84: 83, 85+: 14

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ozempic
Semaglutide
160
Levothyroxine Sodium
129
Metformin Hcl Er
Metformin Hcl
78
Levoxyl
Levothyroxine Sodium
75
Mounjaro
Tirzepatide
74
Trulicity
Dulaglutide
65
Jardiance
Empagliflozin
48
Methimazole
35
Gabapentin
33
Tresiba Flextouch U-200
Insulin Degludec
30

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

Endocrinology, Diabetes & Metabolism Physician Overview

How ALEJANDRA RIERA GONZALEZ, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

ALEJANDRA RIERA GONZALEZ, M.D.'s 1,323 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Louisiana

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALEJANDRA RIERA GONZALEZ, M.D.'s specialty?
ALEJANDRA RIERA GONZALEZ, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in MARRERO, Louisiana. Credentials: M.D..
How much does ALEJANDRA RIERA GONZALEZ, M.D. prescribe under Medicare Part D?
In 2023, ALEJANDRA RIERA GONZALEZ, M.D. wrote 1,323 Medicare Part D claims totaling $850K in drug costs for 266 beneficiaries.
What is ALEJANDRA RIERA GONZALEZ, M.D.'s Medicare quality score?
ALEJANDRA RIERA GONZALEZ, M.D. has a CMS MIPS Final Score of 96.9086/100 (Quality: 77.779). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ALEJANDRA RIERA GONZALEZ, M.D. located?
ALEJANDRA RIERA GONZALEZ, M.D. is located at 1111 MEDICAL CENTER BLVD STE S850, MARRERO, LA, 70072. Phone: (504) 349-6450.
What is ALEJANDRA RIERA GONZALEZ, M.D.'s NPI number?
ALEJANDRA RIERA GONZALEZ, M.D.'s National Provider Identifier (NPI) is 1306258884, issued on 06/02/2014.
Does ALEJANDRA RIERA GONZALEZ, M.D. prescribe more brand-name or generic drugs?
ALEJANDRA RIERA GONZALEZ, M.D.'s prescribing is 60% brand-name and 40% generic drugs by claim count, with $824K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does ALEJANDRA RIERA GONZALEZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ALEJANDRA RIERA GONZALEZ, M.D.'s most frequently prescribed drugs include Ozempic, Levothyroxine Sodium, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALEJANDRA RIERA GONZALEZ, M.D. accept Medicare?
ALEJANDRA RIERA GONZALEZ, M.D. appears in CMS Medicare data with 1,323 Part D claims and 266 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALEJANDRA RIERA GONZALEZ, M.D.'s credentials?
ALEJANDRA RIERA GONZALEZ, M.D.'s NPI is 1306258884 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