2026 NPPES data Family Medicine Physician NPI 1811337199 D.O.
Verify on CMS →

JEFFREY NELSON, D.O.

Family Medicine Physician in PORT HUENEME, California. 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
2K
Medicare Part D claims · 160 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$194.15
10 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JEFFREY NELSON, D.O. is a Family Medicine Physician ([object Object]) practicing in PORT HUENEME, California with a Medicare Part D prescribing footprint of 2K claims across 160 beneficiaries — 11% brand-name prescribing . Industry payments of $194.15 across 10 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JEFFREY NELSON, D.O. filed 1,901 Medicare Part D claims in 2023 across PORT HUENEME, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JEFFREY NELSON, D.O. 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).

JEFFREY NELSON, D.O. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/01/2013

NPI 1811337199

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

1,901 44% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in California

How Family Medicine Physician compares to other specialties among California providers

California providers

Family Medicine Physician share within California

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine Physician) — 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 NELSON, D.O. is a Family Medicine Physician provider practicing in PORT HUENEME, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1811337199. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JEFFREY NELSON, D.O. appears in the CMS NPPES registry as a Family Medicine Physician provider holding D.O. credentials at 321 E PORT HUENEME RD, PORT HUENEME, CA, 93041, with a listed phone of (805) 652-4267. NPI 1811337199 was issued on 07/01/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NELSON 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 1,901 prescription claims written by this provider, covering 160 Medicare beneficiaries and totaling roughly $191K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 1.8%. 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

321 E PORT HUENEME RD
PORT HUENEME, CA 93041

Provider Details

NPI 1811337199
Specialty Family Medicine Physician
Credentials D.O.
Gender Male
NPI Issued 07/01/2013

Hospital and facility affiliations

Facilities where JEFFREY NELSON, D.O. 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.

COMMUNITY MEMORIAL HEALTH SYSTEM
OJAI, CA

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 JEFFREY NELSON, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$194

Largest payer

AstraZeneca Pharmaceuticals LP

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.

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to JEFFREY NELSON, D.O.. To verify JEFFREY NELSON, D.O.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

JEFFREY NELSON, D.O. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 1,901 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.

1,901
Total Claims
$191K
Total Drug Cost
160
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,999
Total Day Supply
117,134
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$159K
Generic Drug Cost
$32K
Opioid Claims
34 (1.8% rate)
Antibiotic Claims
30

Patient Demographics

Average Patient Age
69.9 years
Avg HCC Risk Score
1.23
Gender Split
58% female / 43% male
Age Distribution
<65: 31, 65-74: 76, 75-84: 42, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
195
Lisinopril
96
Levothyroxine Sodium
93
Amlodipine Besylate
78
Metformin Hcl
74
Losartan Potassium
60
Omeprazole
48
Gabapentin
45
Meloxicam
37
Metformin Hcl Er
Metformin Hcl
37

* 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 JEFFREY NELSON, D.O. fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

JEFFREY NELSON, D.O.'s 1,901 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in California

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

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JEFFREY NELSON, D.O.'s specialty?
JEFFREY NELSON, D.O. specializes in Family Medicine Physician and practices in PORT HUENEME, California. Credentials: D.O..
How much does JEFFREY NELSON, D.O. prescribe under Medicare Part D?
In 2023, JEFFREY NELSON, D.O. wrote 1,901 Medicare Part D claims totaling $191K in drug costs for 160 beneficiaries.
Where is JEFFREY NELSON, D.O. located?
JEFFREY NELSON, D.O. is located at 321 E PORT HUENEME RD, PORT HUENEME, CA, 93041. Phone: (805) 652-4267.
What is JEFFREY NELSON, D.O.'s NPI number?
JEFFREY NELSON, D.O.'s National Provider Identifier (NPI) is 1811337199, issued on 07/01/2013.
Does JEFFREY NELSON, D.O. prescribe more brand-name or generic drugs?
JEFFREY NELSON, D.O.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $159K in brand drug costs.
Does JEFFREY NELSON, D.O. prescribe opioids?
Yes, JEFFREY NELSON, D.O. had 34 opioid claims in 2023 with an opioid prescribing rate of 1.8%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 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 JEFFREY NELSON, D.O. prescribe most often?
Based on 2023 Medicare Part D data, JEFFREY NELSON, D.O.'s most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JEFFREY NELSON, D.O. accept Medicare?
JEFFREY NELSON, D.O. appears in CMS Medicare data with 1,901 Part D claims and 160 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JEFFREY NELSON, D.O.'s credentials?
JEFFREY NELSON, D.O.'s NPI is 1811337199 with credentials D.O.. 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