2026 NPPES data Medical Physician Assistant NPI 1639174824 PAC
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Howard Diaz, PAC

Medical Physician Assistant in Albuquerque, New Mexico. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,527 in Medical Physician Assistant, 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
98
Medicare Part D claims · 47 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97.6/100
▲ 14 pts above national avg 83.1 · Exceptional
Industry payments
$88.01
4 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Howard Diaz, PAC reported a CMS MIPS final score of 97.6/100 - above the 83.1 national average - and filed 98 Medicare Part D claims in 2023.

97.6/100
MIPS score · +14 vs avg
98
Part D claims, 2023
88%
generic prescribing
$88.01
industry payments (Sunshine Act)

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.

Howard Diaz, PAC's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

98 Top 15% higher than 85% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90+: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Howard Diaz, PAC sits

This provider among medical physician assistant peers

Across the 7,339 medical physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Howard Diaz, PAC writes more Part D claims than 20% of them and scores higher on MIPS quality than 87% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 57Howard Diaz, PAC-Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 87
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one medical physician assistant peer from a representative sample of 60; the gold marker is Howard Diaz, PAC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Howard Diaz, PAC?

High performer (top quartile)

NPI registry status

Active

Issued 06/15/2005

NPI 1639174824

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

98 91% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

MIPS final score

97.6/100 14.5 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in New Mexico

How Medical Physician Assistant compares to other specialties among New Mexico providers

New Mexico providers

Largest specialties in New Mexico (% of in-state providers)

Behavior Technician - 9.5%Behavior Technician9.5%Case Manager/Care Coordinator - 6.3%Case Manager/Care Coordinator6.3%Mental Health Counselor - 5.1%Mental Health Counselor5.1%Student in an Organized Health Care Education/Training Program - 3.9%Student in an Organized Health Care Education/Training Program3.9%Counselor - 3.8%Counselor3.8%Clinical Social Worker - 3.8%Clinical Social Worker3.8%Medical Physician Assistant - 0.5%Medical Physician Assistant0.5%
Largest specialties in New Mexico (% of in-state providers)

Medicare quality performance, MIPS

Howard Diaz, PAC's 2023 MIPS final score plotted against the Medical Physician Assistant national average

High performer (top quartile)
MIPS Final Score
97.6/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Physician Assistant) - 97.6/100 vs national avg 83.1

0%100%National avg83%97.6%
MIPS final score (Medical Physician Assistant) - 97.6/100 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).

Howard Diaz, PAC appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PAC credentials at 502 ELM ST NE, Albuquerque, NM, 87102, with a listed phone of (505) 841-1000. NPI 1639174824 was issued on 06/15/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what 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 98 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $12K in drug spend, split 12% brand-name and 88% 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 97.6/100 for the 2023 performance year (Quality 86.5), compared with the national average of 83.1.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

502 ELM ST NE
Albuquerque, NM 87102

Provider Details

NPI 1639174824
Specialty Medical Physician Assistant
Credentials PAC
Gender Male
NPI Issued 06/15/2005

CMS Quality Score (MIPS)

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

97.5814
Final Score
Avg: 83.1
86.5348
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Howard Diaz, PAC 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.

Southwest Medical Associates, LLC
Brentwood, TN

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 Howard Diaz, PAC. Source: openpaymentsdata.cms.gov.

Total received

$88

Largest payer

ABIOMED

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 · Typical

Howard Diaz, PAC - brand share 12.0%
Medical Physician Assistant average

12% brand-name claims vs 88% generic, on 98 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.

98
Total Claims
$12K
Total Drug Cost
47
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
158
Total Day Supply
4,063
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$10K
Generic Drug Cost
$1K
Antibiotic Claims
18

Patient Demographics

Average Patient Age
76.9 years
Avg HCC Risk Score
1.95
Gender Split
40% female / 60% male

Top Prescribed Drugs (Medicare Part D)

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

What Howard Diaz, PAC 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
Clopidogrel
Clopidogrel Bisulfate
19
Amoxicillin
17
Carvedilol
11

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

Medical Physician Assistant Overview

How Howard Diaz, PAC fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

Howard Diaz, PAC's 98 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in New Mexico

Other clinicians with the same primary specialty enrolled in New Mexico, drawn from the same CMS NPPES roster as Diaz.

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the New Mexico medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Medical Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Howard Diaz, PAC's specialty?
Howard Diaz, PAC specializes in Medical Physician Assistant and practices in Albuquerque, New Mexico. Credentials: PAC.
How much does Howard Diaz, PAC prescribe under Medicare Part D?
In 2023, Howard Diaz, PAC wrote 98 Medicare Part D claims totaling $12K in drug costs for 47 beneficiaries.
What is Howard Diaz, PAC's Medicare quality score?
Howard Diaz, PAC has a CMS MIPS Final Score of 97.6/100 (Quality: 86.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Howard Diaz, PAC located?
Howard Diaz, PAC is located at 502 ELM ST NE, Albuquerque, NM, 87102. Phone: (505) 841-1000.
What is Howard Diaz, PAC's NPI number?
Howard Diaz, PAC's National Provider Identifier (NPI) is 1639174824, issued on 06/15/2005.
Does Howard Diaz, PAC prescribe more brand-name or generic drugs?
Howard Diaz, PAC's prescribing is 12% brand-name and 88% generic drugs by claim count, with $10K in brand drug costs.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does Howard Diaz, PAC prescribe most often?
Based on 2023 Medicare Part D data, Howard Diaz, PAC's most frequently prescribed drugs include Clopidogrel, Amoxicillin, Carvedilol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Howard Diaz, PAC accept Medicare?
Howard Diaz, PAC appears in CMS Medicare data with 98 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Howard Diaz, PAC's credentials?
Howard Diaz, PAC's NPI is 1639174824 with credentials PAC. 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

Compiled from official public sources by the PlainDoctor editorial team.