NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1013281120
Verify on CMS → Gregory Miller
Physician Assistant in Corvallis, 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 156,084 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
2K
Medicare Part D claims · 259 beneficiaries · Physician Assistant avg: 832
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$100
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Gregory Miller filed 1,955 Medicare Part D claims in 2024 as a Physician Assistant in Corvallis, Oregon, prescribing 85% generic.
- 2K
- Part D claims, 2024
- 85%
- generic prescribing
- $100
- industry payments (Sunshine Act)
- ≥83rd
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Gregory Miller
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1013281120), first enumerated 03/07/2012.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,955 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
4 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$100 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1013281120 · Physician Assistant
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1013281120
- ENUM-MID 2012
- TAX-MEGA 156K Physician Assistant
- RX-MID 1,955
- BOOK-LIGHT 1,988 in Oregon
- PHOTO-ENUM Harold Hahn, RPA-C · 2012
Gregory Miller's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,955 ≥ 83rd percentile 83% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Gregory Miller?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
1,955 135% vs specialty avg
Specialty distribution in Oregon
How Physician Assistant compares to other specialties among Oregon providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Physician Assistant. Verify directly:
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).
Practice Address
Provider Details
| NPI | 1013281120 |
|---|---|
| Specialty | Physician Assistant |
| Gender | Male |
| NPI Issued | 03/07/2012 |
Hospital and facility affiliations
Facilities where Gregory Miller 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.
According to CMS billing records, Gregory Miller is affiliated with 4 Medicare-billing facilities.
Albany General Hospital
Albany, OR
Good Samaritan Hospital Corvallis
Corvallis, OR
Mid-Valley Healthcare Inc
Lebanon, OR
Samaritan Pacific Health Services Inc
Newport, 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).
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 Gregory Miller. Source: openpaymentsdata.cms.gov.
Total received
$100
Largest payer
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
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
Gregory Miller - brand share 14.0%
Physician Assistant average
14% brand-name claims vs 85% generic, on 1,955 2024 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 2024.
1,955
Total Claims
$167K
Total Drug Cost
259
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,456.267
- Total Day Supply
- 100,780
- Brand vs Generic
- 14% brand / 85% generic
- Brand Drug Cost
- $136K
- Generic Drug Cost
- $30K
- Opioid Claims
- 41 (2.1% rate)
- Antibiotic Claims
- 11
Patient Demographics
- Average Patient Age
- 67.9 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 45% female / 55% male
- Age Distribution
- <65: 71, 65-74: 111, 75-84: 58, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Gregory Miller prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
161 claims
- Amlodipine Besylate
Amlodipine Besylate
96 claims
- Levothyroxine Sodium
Levothyroxine Sodium
69 claims
- Losartan Potassium 64
Losartan Potassium
64 claims
- Lisinopril 58
Lisinopril
58 claims
- Metformin Hcl Er 57
Metformin Hcl Er
57 claims
- Metoprolol Succinate 55
Metoprolol Succinate
55 claims
- Gabapentin 53
Gabapentin
53 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 161 |
| Amlodipine Besylate | 96 |
| Levothyroxine Sodium | 69 |
| Losartan Potassium | 64 |
| Lisinopril | 58 |
| Metformin Hcl Er Metformin Hcl | 57 |
| Metoprolol Succinate | 55 |
| Gabapentin | 53 |
| Tamsulosin Hcl | 49 |
| Furosemide | 47 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Gregory Miller fits within the Physician Assistant landscape nationally.
156,084
Physician Assistant Providers in US
56
States with Physician Assistant
832
Avg Claims per Provider
Gregory Miller's 1,955 claims are above the specialty average of 832.
Nationwide Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Miller, both outside Oregon so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Miller.
One of 1,988 Physician Assistant providers enrolled in Oregon, 5 are shown here.
Matthew Abbott
PA-C
Portland, OR
Sanyi Yoseph Abdissa
Hermiston, OR
Emad Aboujaoude
PA
Portland, OR
Dr. Christopher Accola
PHARMD
Springfield, OR
Erika Acuna
PA-C
Portland, OR
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gregory Miller's specialty? ▼
Gregory Miller specializes in Physician Assistant and practices in Corvallis, Oregon.
How much does Gregory Miller prescribe under Medicare Part D? ▼
In 2024, Gregory Miller wrote 1,955 Medicare Part D claims totaling $167K in drug costs for 259 beneficiaries.
Where is Gregory Miller located? ▼
Gregory Miller is located at 3640 NW SAMARITAN DR STE 100, Corvallis, OR, 97330. Phone: (541) 768-5205.
What is Gregory Miller's NPI number? ▼
Gregory Miller's National Provider Identifier (NPI) is 1013281120, issued on 03/07/2012.
Does Gregory Miller prescribe more brand-name or generic drugs? ▼
Gregory Miller's prescribing is 14% brand-name and 85% generic drugs by claim count, with $136K in brand drug costs.
Does Gregory Miller prescribe opioids? ▼
Yes, Gregory Miller had 41 opioid claims in 2024 with an opioid prescribing rate of 2.1%.
How many Physician Assistant providers are there in the US? ▼
There are 156,084 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 832 Medicare Part D claims per year.
What drugs does Gregory Miller prescribe most often? ▼
Based on 2024 Medicare Part D data, Gregory Miller's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Miller accept Medicare? ▼
Gregory Miller appears in CMS Medicare data with 1,955 Part D claims and 259 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Miller's credentials? ▼
Gregory Miller's NPI is 1013281120. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.