2026 NPPES data Medical Physician Assistant NPI 1053928374 PA-C
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Michael Porter, PA-C

Medical Physician Assistant in Mesa, Arizona. 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
4K
Medicare Part D claims · 443 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
87%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Michael Porter, PA-C filed 4,127 Medicare Part D claims in 2023 as a Medical Physician Assistant in Mesa, Arizona, prescribing 87% generic.

4K
Part D claims, 2023
87%
generic prescribing

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.

Michael Porter, PA-C's Medicare Part D volume vs every U.S. prescriber

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

4,127 Top 8% higher than 92% 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

What does the federal data show about Michael Porter, PA-C?

Quality data not reported

NPI registry status

Active

Issued 09/30/2020

NPI 1053928374

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

4,127 283% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Arizona

How Medical Physician Assistant compares to other specialties among Arizona providers

Arizona providers

Largest specialties in Arizona (% of in-state providers)

Pharmacist — 5.6%Pharmacist5.6%Behavior Technician — 5.6%Behavior Technician5.6%Family Nurse Practitioner — 4.3%Family Nurse Practitioner4.3%Physical Therapist — 4.2%Physical Therapist4.2%Speech-Language Pathologist — 3.5%Speech-Language Pathologist3.5%Student in an Organized Health Care Education/Training Program — 3.5%Student in an Organized Health Care Education/Training Program3.5%Medical Physician Assistant — 0.9%Medical Physician Assistant0.9%
Largest specialties in Arizona (% of in-state providers)

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

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

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — 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).

Michael Porter, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 1060 E SOUTHERN AVE STE 106, Mesa, AZ, 85204, with a listed phone of (480) 870-7400. NPI 1053928374 was issued on 09/30/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Porter 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 4,127 prescription claims written by this provider, covering 443 Medicare beneficiaries and totaling roughly $497K in drug spend, split 12% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.4%. 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.

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

1060 E SOUTHERN AVE STE 106
Mesa, AZ 85204

Provider Details

NPI 1053928374
Specialty Medical Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 09/30/2020

Brand vs generic prescribing mix · Typical

Michael Porter, PA-C — brand share 12.0%
Medical Physician Assistant average

12% brand-name claims vs 87% generic, on 4,127 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.

4,127
Total Claims
$497K
Total Drug Cost
443
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,583
Total Day Supply
275,157
Brand vs Generic
12% brand / 87% generic
Brand Drug Cost
$428K
Generic Drug Cost
$67K
Opioid Claims
59 (1.4% rate)
Antibiotic Claims
169

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
2.09
Gender Split
56% female / 44% male
Age Distribution
<65: 74, 65-74: 223, 75-84: 116, 85+: 30

Top Prescribed Drugs (Medicare Part D)

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

What Michael Porter, PA-C 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
314
Lisinopril
163
Metformin Hcl
154
Losartan Potassium
141
Levothyroxine Sodium
125
Albuterol Sulfate Hfa
Albuterol Sulfate
108
Amlodipine Besylate
99
Gabapentin
88
Metoprolol Succinate
77
Simvastatin
77

* 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 Michael Porter, PA-C 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

Michael Porter, PA-C's 4,127 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Arizona

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

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 Arizona 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 Michael Porter, PA-C's specialty?
Michael Porter, PA-C specializes in Medical Physician Assistant and practices in Mesa, Arizona. Credentials: PA-C.
How much does Michael Porter, PA-C prescribe under Medicare Part D?
In 2023, Michael Porter, PA-C wrote 4,127 Medicare Part D claims totaling $497K in drug costs for 443 beneficiaries.
Where is Michael Porter, PA-C located?
Michael Porter, PA-C is located at 1060 E SOUTHERN AVE STE 106, Mesa, AZ, 85204. Phone: (480) 870-7400.
What is Michael Porter, PA-C's NPI number?
Michael Porter, PA-C's National Provider Identifier (NPI) is 1053928374, issued on 09/30/2020.
Does Michael Porter, PA-C prescribe more brand-name or generic drugs?
Michael Porter, PA-C's prescribing is 12% brand-name and 87% generic drugs by claim count, with $428K in brand drug costs.
Does Michael Porter, PA-C prescribe opioids?
Yes, Michael Porter, PA-C had 59 opioid claims in 2023 with an opioid prescribing rate of 1.4%.
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 Michael Porter, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Michael Porter, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Porter, PA-C accept Medicare?
Michael Porter, PA-C appears in CMS Medicare data with 4,127 Part D claims and 443 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Porter, PA-C's credentials?
Michael Porter, PA-C's NPI is 1053928374 with credentials PA-C. 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

Compiled from official public sources by the PlainDoctor editorial team.