2026 NPPES data Medical Physician Assistant NPI 1679604094 PA
Verify on CMS →

JEFFREY SEWING, PA

Medical Physician Assistant in KLAMATH FALLS, Oregon. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
4K
Medicare Part D claims · 251 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JEFFREY SEWING, PA filed 4,121 Medicare Part D claims in 2023 as a Medical Physician Assistant in KLAMATH FALLS, Oregon, prescribing 85% generic.

4K
Part D claims, 2023
85%
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.

JEFFREY SEWING, PA's Medicare Part D volume vs every U.S. prescriber

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

4,121 Top 8% higher than 92% 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 JEFFREY SEWING, PA?

Quality data not reported

NPI registry status

Active

Issued 03/08/2007

NPI 1679604094

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

4,121 283% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Oregon

How Medical Physician Assistant compares to other specialties among Oregon providers

Oregon providers

Medical Physician Assistant share within Oregon

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Oregon

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).

JEFFREY SEWING, PA appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA credentials at 2074 SOUTH 6TH STREET, KLAMATH FALLS, OR, 97601, with a listed phone of (541) 851-8110. NPI 1679604094 was issued on 03/08/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SEWING 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 4,121 prescription claims written by this provider, covering 251 Medicare beneficiaries and totaling roughly $474K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 9.2%. 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.

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

2074 SOUTH 6TH STREET
KLAMATH FALLS, OR 97601

Provider Details

NPI 1679604094
Specialty Medical Physician Assistant
Credentials PA
Gender Male
NPI Issued 03/08/2007

Brand vs generic prescribing mix · Typical

JEFFREY SEWING, PA — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 4,121 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.

4,121
Total Claims
$474K
Total Drug Cost
251
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
7,981
Total Day Supply
232,998
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$415K
Generic Drug Cost
$58K
Opioid Claims
381 (9.2% rate)
Antibiotic Claims
29

Patient Demographics

Average Patient Age
69.6 years
Avg HCC Risk Score
1.22
Gender Split
55% female / 45% male
Age Distribution
<65: 60, 65-74: 111, 75-84: 65, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What JEFFREY SEWING, 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
265
Amlodipine Besylate
159
Trazodone Hcl
154
Omeprazole
142
Atorvastatin Calcium
140
Metformin Hcl
126
Lisinopril
125
Losartan Potassium
97
Levothyroxine Sodium
88
Gabapentin
77

* 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 JEFFREY SEWING, PA 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

JEFFREY SEWING, PA's 4,121 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Oregon

Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as SEWING.

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is JEFFREY SEWING, PA's specialty?
JEFFREY SEWING, PA specializes in Medical Physician Assistant and practices in KLAMATH FALLS, Oregon. Credentials: PA.
How much does JEFFREY SEWING, PA prescribe under Medicare Part D?
In 2023, JEFFREY SEWING, PA wrote 4,121 Medicare Part D claims totaling $474K in drug costs for 251 beneficiaries.
Where is JEFFREY SEWING, PA located?
JEFFREY SEWING, PA is located at 2074 SOUTH 6TH STREET, KLAMATH FALLS, OR, 97601. Phone: (541) 851-8110.
What is JEFFREY SEWING, PA's NPI number?
JEFFREY SEWING, PA's National Provider Identifier (NPI) is 1679604094, issued on 03/08/2007.
Does JEFFREY SEWING, PA prescribe more brand-name or generic drugs?
JEFFREY SEWING, PA's prescribing is 15% brand-name and 85% generic drugs by claim count, with $415K in brand drug costs.
Does JEFFREY SEWING, PA prescribe opioids?
Yes, JEFFREY SEWING, PA had 381 opioid claims in 2023 with an opioid prescribing rate of 9.2%.
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 JEFFREY SEWING, PA prescribe most often?
Based on 2023 Medicare Part D data, JEFFREY SEWING, PA's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Amlodipine Besylate, Trazodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JEFFREY SEWING, PA accept Medicare?
JEFFREY SEWING, PA appears in CMS Medicare data with 4,121 Part D claims and 251 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JEFFREY SEWING, PA's credentials?
JEFFREY SEWING, PA's NPI is 1679604094 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