2026 NPPES data Family Medicine Physician NPI 1578515037 M.D.
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ERNESTO MENDOZA, M.D.

Family Medicine Physician in WESTMINSTER, Maryland. 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
12K
Medicare Part D claims · 739 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$172.85
6 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ERNESTO MENDOZA, M.D. filed 12,178 Medicare Part D claims in 2023 as a Family Medicine Physician in WESTMINSTER, Maryland, prescribing 91% generic.

12K
Part D claims, 2023
91%
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.

ERNESTO MENDOZA, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

12,178 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

ERNESTO MENDOZA, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 ERNESTO MENDOZA, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/16/2006

NPI 1578515037

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

12,178 256% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Maryland

How Family Medicine Physician compares to other specialties among Maryland providers

Maryland providers

Family Medicine Physician share within Maryland

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

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).

ERNESTO MENDOZA, M.D. appears in the CMS NPPES registry as a Family Medicine Physician provider holding M.D. credentials at 826 WASHINGTON RD, WESTMINSTER, MD, 21157, with a listed phone of (410) 848-2444. NPI 1578515037 was issued on 05/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MENDOZA 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 12,178 prescription claims written by this provider, covering 739 Medicare beneficiaries and totaling roughly $753K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 2.3%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

826 WASHINGTON RD
WESTMINSTER, MD 21157

Provider Details

NPI 1578515037
Specialty Family Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 05/16/2006

Hospital and facility affiliations

Facilities where ERNESTO MENDOZA, 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.

CARROLL HEALTH GROUP LLC
WESTMINSTER, MD

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 ERNESTO MENDOZA, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$173

Largest payer

AstraZeneca Pharmaceuticals LP

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 · Generic-heavy

ERNESTO MENDOZA, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 12,178 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.

12,178
Total Claims
$753K
Total Drug Cost
739
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
20,108
Total Day Supply
554,935
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$516K
Generic Drug Cost
$230K
Opioid Claims
286 (2.3% rate)
Antibiotic Claims
569

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
1.11
Gender Split
61% female / 39% male
Age Distribution
<65: 66, 65-74: 272, 75-84: 270, 85+: 131

Top Prescribed Drugs (Medicare Part D)

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

What ERNESTO MENDOZA, 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
Atorvastatin Calcium
594
Levothyroxine Sodium
536
Amlodipine Besylate
474
Metoprolol Succinate
272
Lisinopril
268
Pantoprazole Sodium
247
Trazodone Hcl
241
Sertraline Hcl
238
Hydrochlorothiazide
225
Lorazepam
206

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

Family Medicine Physician Overview

How ERNESTO MENDOZA, M.D. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

ERNESTO MENDOZA, M.D.'s 12,178 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Maryland

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

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ERNESTO MENDOZA, M.D.'s specialty?
ERNESTO MENDOZA, M.D. specializes in Family Medicine Physician and practices in WESTMINSTER, Maryland. Credentials: M.D..
How much does ERNESTO MENDOZA, M.D. prescribe under Medicare Part D?
In 2023, ERNESTO MENDOZA, M.D. wrote 12,178 Medicare Part D claims totaling $753K in drug costs for 739 beneficiaries.
Where is ERNESTO MENDOZA, M.D. located?
ERNESTO MENDOZA, M.D. is located at 826 WASHINGTON RD, WESTMINSTER, MD, 21157. Phone: (410) 848-2444.
What is ERNESTO MENDOZA, M.D.'s NPI number?
ERNESTO MENDOZA, M.D.'s National Provider Identifier (NPI) is 1578515037, issued on 05/16/2006.
Does ERNESTO MENDOZA, M.D. prescribe more brand-name or generic drugs?
ERNESTO MENDOZA, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $516K in brand drug costs.
Does ERNESTO MENDOZA, M.D. prescribe opioids?
Yes, ERNESTO MENDOZA, M.D. had 286 opioid claims in 2023 with an opioid prescribing rate of 2.3%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does ERNESTO MENDOZA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ERNESTO MENDOZA, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ERNESTO MENDOZA, M.D. accept Medicare?
ERNESTO MENDOZA, M.D. appears in CMS Medicare data with 12,178 Part D claims and 739 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ERNESTO MENDOZA, M.D.'s credentials?
ERNESTO MENDOZA, M.D.'s NPI is 1578515037 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.
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