2026 NPPES data Physician Assistant NPI 1588621916 PA
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Michael Bellas, PA

Physician Assistant in Taos, 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 149,975 in 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
1K
Medicare Part D claims · 550 beneficiaries · Physician Assistant avg: 790
Generic prescribing
91%
generic claims · 7% 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 Bellas, PA filed 1,173 Medicare Part D claims in 2023 as a Physician Assistant in Taos, New Mexico, prescribing 91% generic.

1K
Part D claims, 2023
91%
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 Bellas, PA's Medicare Part D volume vs every U.S. prescriber

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

1,173 Top 23% higher than 77% 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%). This entry sits in this band. 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

What does the federal data show about Michael Bellas, PA?

Quality data not reported

NPI registry status

Active

Issued 04/28/2006

NPI 1588621916

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

1,173 48% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in New Mexico

How 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%Physician Assistant - 1.4%Physician Assistant1.4%
Largest specialties in New Mexico (% of in-state providers)

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (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 Bellas, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 1397 WEIMER RD, Taos, NM, 87571, with a listed phone of (505) 758-8883. NPI 1588621916 was issued on 04/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Bellas 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 1,173 prescription claims written by this provider, covering 550 Medicare beneficiaries and totaling roughly $26K in drug spend, split 7% brand-name and 91% generic by claim count, with an opioid prescribing rate of 3.2%. 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

1397 WEIMER RD
Taos, NM 87571

Provider Details

NPI 1588621916
Specialty Physician Assistant
Credentials PA
Gender Male
NPI Issued 04/28/2006

Hospital and facility affiliations

Facilities where Michael Bellas, PA 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.

Taos Comprehensive Health Corporation
Santa Fe, NM

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 · Generic-heavy

Michael Bellas, PA - brand share 7.0%
Physician Assistant average

7% brand-name claims vs 91% generic, on 1,173 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.

1,173
Total Claims
$26K
Total Drug Cost
550
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,238
Total Day Supply
14,574
Brand vs Generic
7% brand / 91% generic
Brand Drug Cost
$13K
Generic Drug Cost
$12K
Opioid Claims
37 (3.2% rate)
Antibiotic Claims
436

Patient Demographics

Average Patient Age
71.2 years
Avg HCC Risk Score
0.90
Gender Split
65% female / 35% male
Age Distribution
<65: 63, 65-74: 296, 75-84: 163, 85+: 28

Top Prescribed Drugs (Medicare Part D)

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

What Michael Bellas, PA 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
Azithromycin
145
Prednisone
144
Albuterol Sulfate Hfa
Albuterol Sulfate
95
Doxycycline Monohydrate
91
Cephalexin
85
Fluticasone Propionate
51
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
48
Mupirocin
45
Triamcinolone Acetonide
41
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
32

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

Physician Assistant Overview

How Michael Bellas, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

Michael Bellas, PA's 1,173 claims are above the specialty average of 790.

Nearby 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 Bellas.

Compare 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 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 Bellas, PA's specialty?
Michael Bellas, PA specializes in Physician Assistant and practices in Taos, New Mexico. Credentials: PA.
How much does Michael Bellas, PA prescribe under Medicare Part D?
In 2023, Michael Bellas, PA wrote 1,173 Medicare Part D claims totaling $26K in drug costs for 550 beneficiaries.
Where is Michael Bellas, PA located?
Michael Bellas, PA is located at 1397 WEIMER RD, Taos, NM, 87571. Phone: (505) 758-8883.
What is Michael Bellas, PA's NPI number?
Michael Bellas, PA's National Provider Identifier (NPI) is 1588621916, issued on 04/28/2006.
Does Michael Bellas, PA prescribe more brand-name or generic drugs?
Michael Bellas, PA's prescribing is 7% brand-name and 91% generic drugs by claim count, with $13K in brand drug costs.
Does Michael Bellas, PA prescribe opioids?
Yes, Michael Bellas, PA had 37 opioid claims in 2023 with an opioid prescribing rate of 3.2%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Michael Bellas, PA prescribe most often?
Based on 2023 Medicare Part D data, Michael Bellas, PA's most frequently prescribed drugs include Azithromycin, Prednisone, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Bellas, PA accept Medicare?
Michael Bellas, PA appears in CMS Medicare data with 1,173 Part D claims and 550 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Bellas, PA's credentials?
Michael Bellas, PA's NPI is 1588621916 with credentials PA. 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.