2026 NPPES data Dermatology Physician NPI 1902889546 MD
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FRANCIS LUX, MD

Dermatology Physician in TUCSON, Arizona. 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
105
Medicare Part D claims · 49 beneficiaries · Dermatology Physician avg: 729

What the federal data shows

FRANCIS LUX, MD filed 105 Medicare Part D claims in 2023 as a Dermatology Physician in TUCSON, Arizona.

105
Part D claims, 2023

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.

FRANCIS LUX, MD's Medicare Part D volume vs every U.S. prescriber

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

105 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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-eligible specialty (heuristic — not verified)

FRANCIS LUX, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about FRANCIS LUX, MD?

Quality data not reported

NPI registry status

Active

Issued 11/29/2005

NPI 1902889546

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

105 86% vs specialty avg

2023 prescription claims

Specialty avg: 729

Specialty distribution in Arizona

How Dermatology Physician compares to other specialties among Arizona providers

Arizona providers

Dermatology Physician share within Arizona

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Dermatology 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).

FRANCIS LUX, MD appears in the CMS NPPES registry as a Dermatology Physician provider holding MD credentials at 13101 N ORACLE RD, TUCSON, AZ, 85739, with a listed phone of (520) 825-8886. NPI 1902889546 was issued on 11/29/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LUX 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 105 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $4K in drug spend. 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.

Dermatology Physician is a mid-sized specialty nationwide, with 14,610 enrolled providers across 53 states and an average of 729 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

13101 N ORACLE RD
TUCSON, AZ 85739

Provider Details

NPI 1902889546
Specialty Dermatology Physician
Credentials MD
Gender Male
NPI Issued 11/29/2005

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

105
Total Claims
$4K
Total Drug Cost
49
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
175
Total Day Supply
4,826
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
77.4 years
Avg HCC Risk Score
0.87
Gender Split
39% female / 61% male

Top Prescribed Drugs (Medicare Part D)

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

What FRANCIS LUX, MD 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
Doxycycline Hyclate
18
Triamcinolone Acetonide
17
Acyclovir
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Dermatology Physician Overview

How FRANCIS LUX, MD fits within the Dermatology Physician landscape nationally.

14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

FRANCIS LUX, MD's 105 claims are below the specialty average of 729.

Nearby Dermatology Physician Providers in Arizona

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

Compare Dermatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is FRANCIS LUX, MD's specialty?
FRANCIS LUX, MD specializes in Dermatology Physician and practices in TUCSON, Arizona. Credentials: MD.
How much does FRANCIS LUX, MD prescribe under Medicare Part D?
In 2023, FRANCIS LUX, MD wrote 105 Medicare Part D claims totaling $4K in drug costs for 49 beneficiaries.
Where is FRANCIS LUX, MD located?
FRANCIS LUX, MD is located at 13101 N ORACLE RD, TUCSON, AZ, 85739. Phone: (520) 825-8886.
What is FRANCIS LUX, MD's NPI number?
FRANCIS LUX, MD's National Provider Identifier (NPI) is 1902889546, issued on 11/29/2005.
How many Dermatology Physician providers are there in the US?
There are 14,610 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does FRANCIS LUX, MD prescribe most often?
Based on 2023 Medicare Part D data, FRANCIS LUX, MD's most frequently prescribed drugs include Doxycycline Hyclate, Triamcinolone Acetonide, Acyclovir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does FRANCIS LUX, MD accept Medicare?
FRANCIS LUX, MD appears in CMS Medicare data with 105 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify FRANCIS LUX, MD's credentials?
FRANCIS LUX, MD's NPI is 1902889546 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

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