2026 NPPES data Medical Physician Assistant NPI 1194822122 PA-C
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Mark Bayliss, PA-C

Medical Physician Assistant in Raton, 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
6K
Medicare Part D claims · 224 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

Mark Bayliss, PA-C filed 6,327 Medicare Part D claims in 2023 as a Medical Physician Assistant in Raton, New Mexico, prescribing 87% generic.

6K
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.

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

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

6,327 Top 4% higher than 96% 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 Mark Bayliss, PA-C?

Quality data not reported

NPI registry status

Active

Issued 09/20/2006

NPI 1194822122

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

6,327 vs specialty avg

2023 prescription claims

Specialty avg: 1,077

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)

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).

Mark Bayliss, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 190 HOSPITAL DR, Raton, NM, 87740, with a listed phone of (575) 445-5563. NPI 1194822122 was issued on 09/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Bayliss 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 6,327 prescription claims written by this provider, covering 224 Medicare beneficiaries and totaling roughly $703K in drug spend, split 12% brand-name and 87% generic by claim count, with an opioid prescribing rate of 10.6%. 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

190 HOSPITAL DR
Raton, NM 87740

Provider Details

NPI 1194822122
Specialty Medical Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 09/20/2006

Hospital and facility affiliations

Facilities where Mark Bayliss, PA-C 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.

LA Familia Primary Care P C
Raton, NM
Miners' Colfax Medical Center
Raton, NM
Critical Access Hospitals
CMS CCN: 321307

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

Mark Bayliss, PA-C - brand share 12.0%
Medical Physician Assistant average

12% brand-name claims vs 87% generic, on 6,327 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.

6,327
Total Claims
$703K
Total Drug Cost
224
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,631
Total Day Supply
306,110
Brand vs Generic
12% brand / 87% generic
Brand Drug Cost
$541K
Generic Drug Cost
$160K
Opioid Claims
668 (10.6% rate)
Antibiotic Claims
127

Patient Demographics

Average Patient Age
68.7 years
Avg HCC Risk Score
1.51
Gender Split
52% female / 48% male
Age Distribution
<65: 60, 65-74: 89, 75-84: 50, 85+: 25

Top Prescribed Drugs (Medicare Part D)

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

What Mark Bayliss, 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
358
Levothyroxine Sodium
273
Lisinopril
238
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
205
Omeprazole
194
Oxycodone Hcl
165
Tramadol Hcl
152
Alprazolam
143
Albuterol Sulfate Hfa
Albuterol Sulfate
139
Ozempic
Semaglutide
139

* 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 Mark Bayliss, 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

Mark Bayliss, PA-C's 6,327 claims are above 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 Bayliss.

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 Mark Bayliss, PA-C's specialty?
Mark Bayliss, PA-C specializes in Medical Physician Assistant and practices in Raton, New Mexico. Credentials: PA-C.
How much does Mark Bayliss, PA-C prescribe under Medicare Part D?
In 2023, Mark Bayliss, PA-C wrote 6,327 Medicare Part D claims totaling $703K in drug costs for 224 beneficiaries.
Where is Mark Bayliss, PA-C located?
Mark Bayliss, PA-C is located at 190 HOSPITAL DR, Raton, NM, 87740. Phone: (575) 445-5563.
What is Mark Bayliss, PA-C's NPI number?
Mark Bayliss, PA-C's National Provider Identifier (NPI) is 1194822122, issued on 09/20/2006.
Does Mark Bayliss, PA-C prescribe more brand-name or generic drugs?
Mark Bayliss, PA-C's prescribing is 12% brand-name and 87% generic drugs by claim count, with $541K in brand drug costs.
Does Mark Bayliss, PA-C prescribe opioids?
Yes, Mark Bayliss, PA-C had 668 opioid claims in 2023 with an opioid prescribing rate of 10.6%.
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 Mark Bayliss, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Mark Bayliss, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Bayliss, PA-C accept Medicare?
Mark Bayliss, PA-C appears in CMS Medicare data with 6,327 Part D claims and 224 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Bayliss, PA-C's credentials?
Mark Bayliss, PA-C's NPI is 1194822122 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.