NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1255591962 MD
Verify on CMS → Gregory Pirkl, MD
Family Medicine Physician in Salem, 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 147,760 in Family Medicine Physician, 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
7K
Medicare Part D claims · 600 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Gregory Pirkl, MD filed 7,409 Medicare Part D claims in 2023 as a Family Medicine Physician in Salem, Oregon, prescribing 91% generic.
- 7K
- Part D claims, 2023
- 91%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥97th
- 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.
CMS NPPES provider registry desk
NPI 1255591962 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1255591962
- ENUM-MID 2008
- TAX-MEGA 148K Family Medicine
- RX-MID 7,409
- BOOK-LIGHT 2,650 in Oregon
- PHOTO-ENUM Jennifer Ryan · 2008
Gregory Pirkl, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
7,409 ≥ 97th percentile 97% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Gregory Pirkl, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Gregory Pirkl, MD?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
7,409 117% vs specialty avg
Specialty distribution in Oregon
How Family Medicine Physician 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 Family Medicine Physician. 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 | 1255591962 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/16/2008 |
Hospital and facility affiliations
Facilities where Gregory Pirkl, MD 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.
Salem Clinic PC
Salem, 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).
Brand vs generic prescribing mix · Generic-heavy
Gregory Pirkl, MD - brand share 8.0%
Family Medicine Physician average
8% brand-name claims vs 91% generic, on 7,409 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.
7,409
Total Claims
$558K
Total Drug Cost
600
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 14,460
- Total Day Supply
- 421,567
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $382K
- Generic Drug Cost
- $173K
- Opioid Claims
- 223 (3.0% rate)
- Antibiotic Claims
- 121
Patient Demographics
- Average Patient Age
- 71.1 years
- Avg HCC Risk Score
- 1.12
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 88, 65-74: 282, 75-84: 182, 85+: 48
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Gregory Pirkl, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
466 claims
- Amlodipine Besylate
Amlodipine Besylate
275 claims
- Levothyroxine Sodium
Levothyroxine Sodium
269 claims
- Lisinopril
Lisinopril
262 claims
- Omeprazole
Omeprazole
247 claims
- Metformin Hcl
Metformin Hcl
226 claims
- Losartan Potassium
Losartan Potassium
205 claims
- Gabapentin
Gabapentin
201 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 466 |
| Amlodipine Besylate | 275 |
| Levothyroxine Sodium | 269 |
| Lisinopril | 262 |
| Omeprazole | 247 |
| Metformin Hcl | 226 |
| Losartan Potassium | 205 |
| Gabapentin | 201 |
| Hydrochlorothiazide | 148 |
| Trazodone Hcl | 140 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Gregory Pirkl, MD fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Gregory Pirkl, MD's 7,409 claims are above the specialty average of 3,418.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Pirkl, both outside Oregon so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Pirkl.
One of 2,650 Family Medicine Physician providers enrolled in Oregon, 5 are shown here.
Dr. Roxana Abbott
DO
Portland, OR
Dr. David Abdun-Nur
M.D.
Grants Pass, OR
Dr. Traci Ackron
D.O.
Hillsboro, OR
Dr. Orlando Acosta
MD
Hood River, OR
Dr. Michele Adamcak
D.O.
Tigard, OR
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gregory Pirkl, MD's specialty? ▼
Gregory Pirkl, MD specializes in Family Medicine Physician and practices in Salem, Oregon. Credentials: MD.
How much does Gregory Pirkl, MD prescribe under Medicare Part D? ▼
In 2023, Gregory Pirkl, MD wrote 7,409 Medicare Part D claims totaling $558K in drug costs for 600 beneficiaries.
Where is Gregory Pirkl, MD located? ▼
Gregory Pirkl, MD is located at 2020 CAPITOL ST NE, Salem, OR, 97301. Phone: (503) 399-2424.
What is Gregory Pirkl, MD's NPI number? ▼
Gregory Pirkl, MD's National Provider Identifier (NPI) is 1255591962, issued on 06/16/2008.
Does Gregory Pirkl, MD prescribe more brand-name or generic drugs? ▼
Gregory Pirkl, MD's prescribing is 8% brand-name and 91% generic drugs by claim count, with $382K in brand drug costs.
Does Gregory Pirkl, MD prescribe opioids? ▼
Yes, Gregory Pirkl, MD had 223 opioid claims in 2023 with an opioid prescribing rate of 3.0%.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Gregory Pirkl, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Pirkl, MD'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 Pirkl, MD accept Medicare? ▼
Gregory Pirkl, MD appears in CMS Medicare data with 7,409 Part D claims and 600 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Pirkl, MD's credentials? ▼
Gregory Pirkl, MD's NPI is 1255591962 with credentials MD. 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.
- 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
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.