NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1821095928 P.A.
Verify on CMS → Gary Lachenmyer, P.A.
Physician Assistant in Bend, Oregon.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 150,974 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
373
Medicare Part D claims · 165 beneficiaries · Physician Assistant avg: 790
MIPS score
73.2/100
▼ 10 pts below national avg 83.1 · Mid-tier
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Gary Lachenmyer, P.A. reported a CMS MIPS final score of 73.2/100 - below the 83.1 national average - and filed 373 Medicare Part D claims in 2023.
- 73.2/100
- MIPS score · -10 vs avg
- 373
- Part D claims, 2023
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.
Gary Lachenmyer, P.A.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
73 11th percentile higher than 11% of 477,587 scored providers
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 Gary Lachenmyer, P.A. sits
This provider among physician assistant peers
Across the 27,054 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Gary Lachenmyer, P.A. writes more Part D claims than 62% of them and scores higher on MIPS quality than 9% - placing this provider in the high-volume, lower-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
Each dot is one physician assistant peer from a representative sample of 60; the gold marker is Gary Lachenmyer, P.A.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Gary Lachenmyer, P.A.?
Below national averagePrimary specialty
Physician Assistant
Medicare Part D claims
373 53% vs specialty avg
MIPS final score
73.2/100 9.9 pts vs avg
Specialty distribution in Oregon
How Physician Assistant compares to other specialties among Oregon providers
Medicare quality performance, MIPS
Gary Lachenmyer, P.A.'s 2023 MIPS final score plotted against the Physician Assistant national average
- MIPS Final Score
- 73.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Physician Assistant) - 73.2/100 vs national avg 83.1
How MIPS and board certification work
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).
Gary Lachenmyer, P.A. appears in the CMS NPPES registry as a Physician Assistant provider holding P.A. credentials at 2200 NE NEFF RD., Bend, OR, 97701, with a listed phone of (541) 382-3344. NPI 1821095928 was issued on 07/05/2005.
Medicare Part D records for calendar year 2023 show 373 prescription claims written by this provider, covering 165 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 42.1%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.2/100 for the 2023 performance year (Quality 51.4, Cost 83.6), compared with the national average of 83.1.
Physician Assistant is a high-volume specialty nationwide, with 150,974 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
Provider Details
| NPI | 1821095928 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | P.A. |
| Gender | Male |
| NPI Issued | 07/05/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.2302
Final Score
Avg: 83.1
51.3624
Quality
83.5714
Cost
71
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Gary Lachenmyer, P.A. 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.
St Charles Health System Inc
Redmond, OR
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
373
Total Claims
$4K
Total Drug Cost
165
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 399
- Total Day Supply
- 5,131
- Generic Drug Cost
- $3K
- Opioid Claims
- 157 (42.1% rate)
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.21
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gary Lachenmyer, P.A. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
73 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
66 claims
- Oxycodone Hcl
Oxycodone Hcl
46 claims
- Meloxicam
Meloxicam
35 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
30 claims
- Tizanidine Hcl 29
Tizanidine Hcl
29 claims
- Gabapentin 21
Gabapentin
21 claims
- Methylprednisolone 17
Methylprednisolone
17 claims
| Drug | Claims |
|---|---|
| Cyclobenzaprine Hcl | 73 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 66 |
| Oxycodone Hcl | 46 |
| Meloxicam | 35 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 30 |
| Tizanidine Hcl | 29 |
| Gabapentin | 21 |
| Methylprednisolone | 17 |
| Dexamethasone | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Gary Lachenmyer, P.A. fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Gary Lachenmyer, P.A.'s 373 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Lachenmyer.
Dr. Alyssa Abbey
PA-C
Bend, OR
Dr. Matthew Abbott
PA-C
Portland, OR
Sanyi Yoseph Abdissa
Hermiston, OR
Dr. Emad Aboujaoude
PA
Portland, OR
Dr. Christopher Accola
PHARMD
Springfield, OR
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 Oregon 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.
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Frequently Asked Questions
What is Gary Lachenmyer, P.A.'s specialty? ▼
Gary Lachenmyer, P.A. specializes in Physician Assistant and practices in Bend, Oregon. Credentials: P.A..
How much does Gary Lachenmyer, P.A. prescribe under Medicare Part D? ▼
In 2023, Gary Lachenmyer, P.A. wrote 373 Medicare Part D claims totaling $4K in drug costs for 165 beneficiaries.
What is Gary Lachenmyer, P.A.'s Medicare quality score? ▼
Gary Lachenmyer, P.A. has a CMS MIPS Final Score of 73.2/100 (Quality: 51.4, Cost: 83.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Gary Lachenmyer, P.A. located? ▼
Gary Lachenmyer, P.A. is located at 2200 NE NEFF RD., Bend, OR, 97701. Phone: (541) 382-3344.
What is Gary Lachenmyer, P.A.'s NPI number? ▼
Gary Lachenmyer, P.A.'s National Provider Identifier (NPI) is 1821095928, issued on 07/05/2005.
Does Gary Lachenmyer, P.A. prescribe opioids? ▼
Yes, Gary Lachenmyer, P.A. had 157 opioid claims in 2023 with an opioid prescribing rate of 42.1%.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 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 Gary Lachenmyer, P.A. prescribe most often? ▼
Based on 2023 Medicare Part D data, Gary Lachenmyer, P.A.'s most frequently prescribed drugs include Cyclobenzaprine Hcl, Oxycodone-Acetaminophen, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gary Lachenmyer, P.A. accept Medicare? ▼
Gary Lachenmyer, P.A. appears in CMS Medicare data with 373 Part D claims and 165 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gary Lachenmyer, P.A.'s credentials? ▼
Gary Lachenmyer, P.A.'s NPI is 1821095928 with credentials P.A.. 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
View source datasets and methodology notes
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.