2026 NPPES data Physician Assistant NPI 1578031415 PA-C
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Robert Lewis, PA-C

Physician Assistant in Houston, Texas. 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
1K
Medicare Part D claims · 393 beneficiaries · Physician Assistant avg: 790
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$536.98
29 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

Robert Lewis, PA-C filed 1,085 Medicare Part D claims in 2023 as a Physician Assistant in Houston, Texas, prescribing 92% generic.

1K
Part D claims, 2023
92%
generic prescribing
$536.98
industry payments (Sunshine Act)

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.

Robert Lewis, PA-C's Medicare Part D volume vs every U.S. prescriber

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

1,085 Top 24% higher than 76% 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%). This entry sits in this band. 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

What does the federal data show about Robert Lewis, PA-C?

Quality data not reported

NPI registry status

Active

Issued 11/08/2018

NPI 1578031415

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

1,085 37% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Texas

How Physician Assistant compares to other specialties among Texas providers

Texas providers

Physician Assistant share within Texas

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

Specialty board-certification context

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

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

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

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

Robert Lewis, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 13259 EAST FWY, Houston, TX, 77015, with a listed phone of (713) 330-1530. NPI 1578031415 was issued on 11/08/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Lewis 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 1,085 prescription claims written by this provider, covering 393 Medicare beneficiaries and totaling roughly $87K in drug spend, split 8% brand-name and 92% generic by claim count. 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

13259 EAST FWY
Houston, TX 77015

Provider Details

NPI 1578031415
Specialty Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 11/08/2018

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 Robert Lewis, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$537

Largest payer

ABBVIE 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 — Texas TMB 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 ~77K Texas medical licensees in 2023 — they are NOT specific to Robert Lewis, PA-C. To verify Robert Lewis, PA-C's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

Robert Lewis, PA-C — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 1,085 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.

1,085
Total Claims
$87K
Total Drug Cost
393
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,934
Total Day Supply
46,732
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$70K
Generic Drug Cost
$16K
Antibiotic Claims
235

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
1.05
Gender Split
64% female / 36% male
Age Distribution
<65: 20, 65-74: 221, 75-84: 121, 85+: 31

Top Prescribed Drugs (Medicare Part D)

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

What Robert Lewis, PA-C 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
Azithromycin
82
Prednisone
64
Methylprednisolone
40
Cefdinir
34
Atorvastatin Calcium
30
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
27
Simvastatin
27
Azelastine Hcl
26
Ciprofloxacin Hcl
26
Doxycycline Hyclate
21

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

Physician Assistant Overview

How Robert Lewis, PA-C fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

Robert Lewis, PA-C's 1,085 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Texas

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Texas medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Physician Assistant peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Robert Lewis, PA-C's specialty?
Robert Lewis, PA-C specializes in Physician Assistant and practices in Houston, Texas. Credentials: PA-C.
How much does Robert Lewis, PA-C prescribe under Medicare Part D?
In 2023, Robert Lewis, PA-C wrote 1,085 Medicare Part D claims totaling $87K in drug costs for 393 beneficiaries.
Where is Robert Lewis, PA-C located?
Robert Lewis, PA-C is located at 13259 EAST FWY, Houston, TX, 77015. Phone: (713) 330-1530.
What is Robert Lewis, PA-C's NPI number?
Robert Lewis, PA-C's National Provider Identifier (NPI) is 1578031415, issued on 11/08/2018.
Does Robert Lewis, PA-C prescribe more brand-name or generic drugs?
Robert Lewis, PA-C's prescribing is 8% brand-name and 92% generic drugs by claim count, with $70K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Robert Lewis, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Robert Lewis, PA-C's most frequently prescribed drugs include Azithromycin, Prednisone, Methylprednisolone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Lewis, PA-C accept Medicare?
Robert Lewis, PA-C appears in CMS Medicare data with 1,085 Part D claims and 393 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Lewis, PA-C's credentials?
Robert Lewis, PA-C's NPI is 1578031415 with credentials PA-C. 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