NPI registry status
Active
2026 NPPES data Primary Care Nurse Practitioner NPI 1275756140 NURSE PRACTITIONER
Verify on CMS → Martha Castillo, NURSE PRACTITIONER
Primary Care Nurse Practitioner in Houston, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 10,597 in Primary Care Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
98
Medicare Part D claims · 47 beneficiaries · Primary Care Nurse Practitioner avg: 1K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$36.92
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Martha Castillo, NURSE PRACTITIONER filed 98 Medicare Part D claims in 2024 as a Primary Care Nurse Practitioner in Houston, Texas, prescribing 83% generic.
- 98
- Part D claims, 2024
- 83%
- generic prescribing
- $36.92
- industry payments (Sunshine Act)
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Martha Castillo, NURSE PRACTITIONER
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1275756140), first enumerated 04/10/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 98 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$36.92 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Martha Castillo, NURSE PRACTITIONER's individual license status. Verify directly with the state medical board.
Source: TMB annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1275756140 · Primary Care Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MID · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1275756140
- ENUM-MID 2007
- TAX-MID 11K Primary Care
- RX-TRACE 98
- BOOK-LIGHT 763 in Texas
- PHOTO-ENUM Anne Fredrickson · 2007
Martha Castillo, NURSE PRACTITIONER's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
98 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Martha Castillo, NURSE PRACTITIONER?
Quality data not reportedPrimary specialty
Primary Care Nurse Practitioner
Medicare Part D claims
98 93% vs specialty avg
Specialty distribution in Texas
How Primary Care Nurse Practitioner compares to other specialties among Texas providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Primary Care Nurse Practitioner. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1275756140 |
|---|---|
| Specialty | Primary Care Nurse Practitioner |
| Credentials | NURSE PRACTITIONER |
| Gender | Female |
| NPI Issued | 04/10/2007 |
Hospital and facility affiliations
Facilities where Martha Castillo, NURSE PRACTITIONER 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.
Hospital Medicine Services OF TX, PLLC
Kingwood, TX
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 Martha Castillo, NURSE PRACTITIONER. Source: openpaymentsdata.cms.gov.
Total received
$37
Largest payer
Janssen Pharmaceuticals, 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 Martha Castillo, NURSE PRACTITIONER. To verify Martha Castillo, NURSE PRACTITIONER'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 · Typical
Martha Castillo, NURSE PRACTITIONER - brand share 17.0%
Primary Care Nurse Practitioner average
17% brand-name claims vs 83% generic, on 98 2024 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 2024.
98
Total Claims
$18K
Total Drug Cost
47
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 189.7
- Total Day Supply
- 5,113
- Brand vs Generic
- 17% brand / 83% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 17
Patient Demographics
- Average Patient Age
- 70.6 years
- Avg HCC Risk Score
- 3.17
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 13, 65-74: N/A, 75-84: 17, 85+: N/A
Primary Care Nurse Practitioner Overview
How Martha Castillo, NURSE PRACTITIONER fits within the Primary Care Nurse Practitioner landscape nationally.
10,597
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,471
Avg Claims per Provider
Martha Castillo, NURSE PRACTITIONER's 98 claims are below the specialty average of 1,471.
Nationwide Primary Care Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Castillo, both outside Texas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Primary Care Nurse Practitioner Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Castillo.
One of 763 Primary Care Nurse Practitioner providers enrolled in Texas, 5 are shown here.
Bethzaida Abdal
Dallas, TX
Sosina Abebu
Richardson, TX
Martha Acevedo
APRN
Houston, TX
Vitalina Adamchevska
APRN
Rockwall, TX
Deanna Adams
RN, FNP-C
Rusk, TX
Compare Primary Care Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Martha Castillo, NURSE PRACTITIONER's specialty? ▼
Martha Castillo, NURSE PRACTITIONER specializes in Primary Care Nurse Practitioner and practices in Houston, Texas. Credentials: NURSE PRACTITIONER.
How much does Martha Castillo, NURSE PRACTITIONER prescribe under Medicare Part D? ▼
In 2024, Martha Castillo, NURSE PRACTITIONER wrote 98 Medicare Part D claims totaling $18K in drug costs for 47 beneficiaries.
Where is Martha Castillo, NURSE PRACTITIONER located? ▼
Martha Castillo, NURSE PRACTITIONER is located at 1251 BETHLEHEM ST, Houston, TX, 77018. Phone: (713) 472-5679.
What is Martha Castillo, NURSE PRACTITIONER's NPI number? ▼
Martha Castillo, NURSE PRACTITIONER's National Provider Identifier (NPI) is 1275756140, issued on 04/10/2007.
Does Martha Castillo, NURSE PRACTITIONER prescribe more brand-name or generic drugs? ▼
Martha Castillo, NURSE PRACTITIONER's prescribing is 17% brand-name and 83% generic drugs by claim count, with $17K in brand drug costs.
How many Primary Care Nurse Practitioner providers are there in the US? ▼
There are 10,597 Primary Care Nurse Practitioner providers across 54 states in the US. The average Primary Care Nurse Practitioner provider writes 1,471 Medicare Part D claims per year.
Does Martha Castillo, NURSE PRACTITIONER accept Medicare? ▼
Martha Castillo, NURSE PRACTITIONER appears in CMS Medicare data with 98 Part D claims and 47 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Martha Castillo, NURSE PRACTITIONER's credentials? ▼
Martha Castillo, NURSE PRACTITIONER's NPI is 1275756140 with credentials NURSE PRACTITIONER. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.