2026 NPPES data Family Medicine Physician NPI 1275660516 D.O.
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ELHAM LOUIS, D.O.

Family Medicine Physician in CAMPBELL, 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 · 213 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$545.09
20 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ELHAM LOUIS, D.O. filed 2,297 Medicare Part D claims in 2023 as a Family Medicine Physician in CAMPBELL, California, prescribing 90% generic.

2K
Part D claims, 2023
90%
generic prescribing
Likely
board-certified (heuristic)

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.

ELHAM LOUIS, D.O.'s Medicare Part D volume vs every U.S. prescriber

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

2,297 Top 15% higher than 85% 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

Board certification likely (heuristic — not verified)

ELHAM LOUIS, 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).

What does the federal data show about ELHAM LOUIS, D.O.?

Quality data not reported

NPI registry status

Active

Issued 02/27/2007

NPI 1275660516

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

2,297 33% 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).

ELHAM LOUIS, D.O. appears in the CMS NPPES registry as a Family Medicine Physician provider holding D.O. credentials at 1580 WINCHESTER BLVD, CAMPBELL, CA, 95008, with a listed phone of (408) 364-7600. NPI 1275660516 was issued on 02/27/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LOUIS 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 2,297 prescription claims written by this provider, covering 213 Medicare beneficiaries and totaling roughly $183K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 1.4%. 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

1580 WINCHESTER BLVD
CAMPBELL, CA 95008

Provider Details

NPI 1275660516
Specialty Family Medicine Physician
Credentials D.O.
Gender Female
NPI Issued 02/27/2007

Hospital and facility affiliations

Facilities where ELHAM LOUIS, 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.

CALIFORNIA EMERGENCY PHYSICIANS
CAMPBELL, 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 ELHAM LOUIS, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$545

Largest payer

UCB, Inc.

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 ELHAM LOUIS, D.O.. To verify ELHAM LOUIS, 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

ELHAM LOUIS, D.O. — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 2,297 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.

2,297
Total Claims
$183K
Total Drug Cost
213
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,545
Total Day Supply
160,467
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$137K
Generic Drug Cost
$45K
Opioid Claims
33 (1.4% rate)
Antibiotic Claims
87

Patient Demographics

Average Patient Age
73.2 years
Avg HCC Risk Score
1.03
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

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

What ELHAM LOUIS, D.O. 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
Atorvastatin Calcium
218
Levothyroxine Sodium
125
Lisinopril
113
Metformin Hcl
88
Hydrochlorothiazide
85
Losartan Potassium
74
Amlodipine Besylate
66
Metoprolol Succinate
58
Lovastatin
53
Albuterol Sulfate Hfa
Albuterol Sulfate
52

* 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 ELHAM LOUIS, 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

ELHAM LOUIS, D.O.'s 2,297 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 LOUIS.

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

Frequently Asked Questions

What is ELHAM LOUIS, D.O.'s specialty?
ELHAM LOUIS, D.O. specializes in Family Medicine Physician and practices in CAMPBELL, California. Credentials: D.O..
How much does ELHAM LOUIS, D.O. prescribe under Medicare Part D?
In 2023, ELHAM LOUIS, D.O. wrote 2,297 Medicare Part D claims totaling $183K in drug costs for 213 beneficiaries.
Where is ELHAM LOUIS, D.O. located?
ELHAM LOUIS, D.O. is located at 1580 WINCHESTER BLVD, CAMPBELL, CA, 95008. Phone: (408) 364-7600.
What is ELHAM LOUIS, D.O.'s NPI number?
ELHAM LOUIS, D.O.'s National Provider Identifier (NPI) is 1275660516, issued on 02/27/2007.
Does ELHAM LOUIS, D.O. prescribe more brand-name or generic drugs?
ELHAM LOUIS, D.O.'s prescribing is 10% brand-name and 90% generic drugs by claim count, with $137K in brand drug costs.
Does ELHAM LOUIS, D.O. prescribe opioids?
Yes, ELHAM LOUIS, D.O. had 33 opioid claims in 2023 with an opioid prescribing rate of 1.4%.
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 ELHAM LOUIS, D.O. prescribe most often?
Based on 2023 Medicare Part D data, ELHAM LOUIS, D.O.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELHAM LOUIS, D.O. accept Medicare?
ELHAM LOUIS, D.O. appears in CMS Medicare data with 2,297 Part D claims and 213 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELHAM LOUIS, D.O.'s credentials?
ELHAM LOUIS, D.O.'s NPI is 1275660516 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