2026 NPPES data Internal Medicine Physician NPI 1609006410 MD
Verify on CMS →

MIGUEL VILLAGRA-DIAZ, MD

Internal Medicine Physician in CARSON CITY, Nevada. 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
405
Medicare Part D claims · 187 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MIGUEL VILLAGRA-DIAZ, MD filed 405 Medicare Part D claims in 2023 as a Internal Medicine Physician in CARSON CITY, Nevada, prescribing 90% generic.

405
Part D claims, 2023
90%
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.

MIGUEL VILLAGRA-DIAZ, MD's Medicare Part D volume vs every U.S. prescriber

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

405 Top 38% higher than 62% 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%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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)

MIGUEL VILLAGRA-DIAZ, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations — 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 MIGUEL VILLAGRA-DIAZ, MD?

Quality data not reported

NPI registry status

Active

Issued 07/15/2009

NPI 1609006410

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

405 85% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Nevada

How Internal Medicine Physician compares to other specialties among Nevada providers

Nevada providers

Internal Medicine Physician share within Nevada

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Internal 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).

MIGUEL VILLAGRA-DIAZ, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 1600 MEDICAL PKWY, CARSON CITY, NV, 89703, with a listed phone of (775) 445-8795. NPI 1609006410 was issued on 07/15/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what VILLAGRA-DIAZ 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 405 prescription claims written by this provider, covering 187 Medicare beneficiaries and totaling roughly $15K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 6.7%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

1600 MEDICAL PKWY
CARSON CITY, NV 89703

Provider Details

NPI 1609006410
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 07/15/2009

Hospital and facility affiliations

Facilities where MIGUEL VILLAGRA-DIAZ, MD 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.

KANDU MEDICAL SERVICES WEST PC
RENO, NV
SOLACE HEALTH MEDICAL GROUP INC
LAS VEGAS, NV
USACS INTEGRATED ACUTE CARE SERVICES OF NEVADA BAGNOLI P C
CARSON CITY, NV

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 · Typical

MIGUEL VILLAGRA-DIAZ, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 405 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.

405
Total Claims
$15K
Total Drug Cost
187
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
450
Total Day Supply
8,197
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$9K
Generic Drug Cost
$6K
Opioid Claims
27 (6.7% rate)
Antibiotic Claims
98

Patient Demographics

Average Patient Age
75.5 years
Avg HCC Risk Score
1.95
Gender Split
56% female / 44% male
Age Distribution
<65: 20, 65-74: 55, 75-84: 75, 85+: 37

Top Prescribed Drugs (Medicare Part D)

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

What MIGUEL VILLAGRA-DIAZ, MD 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
Cefdinir
39
Ondansetron Odt
Ondansetron
27
Doxycycline Hyclate
25
Prednisone
23
Furosemide
21
Clopidogrel
Clopidogrel Bisulfate
16
Metoprolol Tartrate
14
Pantoprazole Sodium
14
Atorvastatin Calcium
13
Azithromycin
12

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

Internal Medicine Physician Overview

How MIGUEL VILLAGRA-DIAZ, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

MIGUEL VILLAGRA-DIAZ, MD's 405 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Nevada

Other clinicians with the same primary specialty enrolled in Nevada, drawn from the same CMS NPPES roster as VILLAGRA-DIAZ.

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

Frequently Asked Questions

What is MIGUEL VILLAGRA-DIAZ, MD's specialty?
MIGUEL VILLAGRA-DIAZ, MD specializes in Internal Medicine Physician and practices in CARSON CITY, Nevada. Credentials: MD.
How much does MIGUEL VILLAGRA-DIAZ, MD prescribe under Medicare Part D?
In 2023, MIGUEL VILLAGRA-DIAZ, MD wrote 405 Medicare Part D claims totaling $15K in drug costs for 187 beneficiaries.
Where is MIGUEL VILLAGRA-DIAZ, MD located?
MIGUEL VILLAGRA-DIAZ, MD is located at 1600 MEDICAL PKWY, CARSON CITY, NV, 89703. Phone: (775) 445-8795.
What is MIGUEL VILLAGRA-DIAZ, MD's NPI number?
MIGUEL VILLAGRA-DIAZ, MD's National Provider Identifier (NPI) is 1609006410, issued on 07/15/2009.
Does MIGUEL VILLAGRA-DIAZ, MD prescribe more brand-name or generic drugs?
MIGUEL VILLAGRA-DIAZ, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $9K in brand drug costs.
Does MIGUEL VILLAGRA-DIAZ, MD prescribe opioids?
Yes, MIGUEL VILLAGRA-DIAZ, MD had 27 opioid claims in 2023 with an opioid prescribing rate of 6.7%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does MIGUEL VILLAGRA-DIAZ, MD prescribe most often?
Based on 2023 Medicare Part D data, MIGUEL VILLAGRA-DIAZ, MD's most frequently prescribed drugs include Cefdinir, Ondansetron Odt, Doxycycline Hyclate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MIGUEL VILLAGRA-DIAZ, MD accept Medicare?
MIGUEL VILLAGRA-DIAZ, MD appears in CMS Medicare data with 405 Part D claims and 187 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MIGUEL VILLAGRA-DIAZ, MD's credentials?
MIGUEL VILLAGRA-DIAZ, MD's NPI is 1609006410 with credentials MD. 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