2026 NPPES data Gerontology Nurse Practitioner NPI 1821639923 MS, RN, NP-C, OCN
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COREEN MARTINEZ, MS, RN, NP-C, OCN

Gerontology Nurse Practitioner 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
638
Medicare Part D claims · 167 beneficiaries · Gerontology Nurse Practitioner avg: 1K
MIPS score
81.3897/100
▼ 2 pts below national avg 83.1 · [object Object]
Industry payments
$279.36
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

COREEN MARTINEZ, MS, RN, NP-C, OCN reported a CMS MIPS final score of 81.3897/100 — below the 83.1 national average — and filed 638 Medicare Part D claims in 2023.

81.3897/100
MIPS score · -2 vs avg
638
Part D claims, 2023
$279.36
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.

COREEN MARTINEZ, MS, RN, NP-C, OCN's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

81 36th percentile higher than 36% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about COREEN MARTINEZ, MS, RN, NP-C, OCN?

Near national average

NPI registry status

Active

Issued 10/01/2019

NPI 1821639923

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

638 50% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

MIPS final score

81.3897/100 1.7102999999999895% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Texas

How Gerontology Nurse Practitioner compares to other specialties among Texas providers

Texas providers

Gerontology Nurse Practitioner share within Texas

1. Gerontology Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gerontology Nurse Practitioner share within Texas

Medicare quality performance — MIPS

COREEN MARTINEZ, MS, RN, NP-C, OCN's 2023 MIPS final score plotted against the Gerontology Nurse Practitioner national average

Near national average
MIPS Final Score
81.3897/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Gerontology Nurse Practitioner) — 81.3897/100 vs national avg 83.1

0%100%National avg83%81.4%
MIPS final score (Gerontology Nurse Practitioner) — 81.3897/100 vs national avg 83.1

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).

COREEN MARTINEZ, MS, RN, NP-C, OCN appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding MS, RN, NP-C, OCN credentials at 1515 HOLCOMBE BLVD, HOUSTON, TX, 77030, with a listed phone of (713) 792-6161. NPI 1821639923 was issued on 10/01/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MARTINEZ 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 638 prescription claims written by this provider, covering 167 Medicare beneficiaries and totaling roughly $470K in drug spend, with an opioid prescribing rate of 3.1%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 81.3897/100 for the 2023 performance year (Quality 81.2519, Cost 49.9786), compared with the national average of 83.1.

Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,625 enrolled providers across 54 states and an average of 1,283 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

1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Provider Details

NPI 1821639923
Specialty Gerontology Nurse Practitioner
Credentials MS, RN, NP-C, OCN
Gender Female
NPI Issued 10/01/2019

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

81.3897
Final Score
Avg: 83.1
81.2519
Quality
49.9786
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where COREEN MARTINEZ, MS, RN, NP-C, OCN 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.

PHYSICIANS REFERRAL SERVICE
HOUSTON, 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 COREEN MARTINEZ, MS, RN, NP-C, OCN. Source: openpaymentsdata.cms.gov.

Total received

$279

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 — 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 COREEN MARTINEZ, MS, RN, NP-C, OCN. To verify COREEN MARTINEZ, MS, RN, NP-C, OCN'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.

Medicare Part D Prescribing Data

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

638
Total Claims
$470K
Total Drug Cost
167
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,360
Total Day Supply
39,320
Generic Drug Cost
$106K
Opioid Claims
20 (3.1% rate)

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
1.60
Age Distribution
<65: 13, 65-74: 83, 75-84: 60, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

What COREEN MARTINEZ, MS, RN, NP-C, OCN 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
Anastrozole
135
Letrozole
97
Tamoxifen Citrate
84
Exemestane
79
Ondansetron Hcl
20
Tramadol Hcl
20
Gabapentin
17
Prochlorperazine Maleate
14
Verzenio
Abemaciclib
14
Venlafaxine Hcl Er
Venlafaxine Hcl
13

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

Gerontology Nurse Practitioner Overview

How COREEN MARTINEZ, MS, RN, NP-C, OCN fits within the Gerontology Nurse Practitioner landscape nationally.

9,625
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider

COREEN MARTINEZ, MS, RN, NP-C, OCN's 638 claims are below the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Texas

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

Compare Gerontology Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is COREEN MARTINEZ, MS, RN, NP-C, OCN's specialty?
COREEN MARTINEZ, MS, RN, NP-C, OCN specializes in Gerontology Nurse Practitioner and practices in HOUSTON, Texas. Credentials: MS, RN, NP-C, OCN.
How much does COREEN MARTINEZ, MS, RN, NP-C, OCN prescribe under Medicare Part D?
In 2023, COREEN MARTINEZ, MS, RN, NP-C, OCN wrote 638 Medicare Part D claims totaling $470K in drug costs for 167 beneficiaries.
What is COREEN MARTINEZ, MS, RN, NP-C, OCN's Medicare quality score?
COREEN MARTINEZ, MS, RN, NP-C, OCN has a CMS MIPS Final Score of 81.3897/100 (Quality: 81.2519, Cost: 49.9786). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is COREEN MARTINEZ, MS, RN, NP-C, OCN located?
COREEN MARTINEZ, MS, RN, NP-C, OCN is located at 1515 HOLCOMBE BLVD, HOUSTON, TX, 77030. Phone: (713) 792-6161.
What is COREEN MARTINEZ, MS, RN, NP-C, OCN's NPI number?
COREEN MARTINEZ, MS, RN, NP-C, OCN's National Provider Identifier (NPI) is 1821639923, issued on 10/01/2019.
Does COREEN MARTINEZ, MS, RN, NP-C, OCN prescribe opioids?
Yes, COREEN MARTINEZ, MS, RN, NP-C, OCN had 20 opioid claims in 2023 with an opioid prescribing rate of 3.1%.
How many Gerontology Nurse Practitioner providers are there in the US?
There are 9,625 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does COREEN MARTINEZ, MS, RN, NP-C, OCN prescribe most often?
Based on 2023 Medicare Part D data, COREEN MARTINEZ, MS, RN, NP-C, OCN's most frequently prescribed drugs include Anastrozole, Letrozole, Tamoxifen Citrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does COREEN MARTINEZ, MS, RN, NP-C, OCN accept Medicare?
COREEN MARTINEZ, MS, RN, NP-C, OCN appears in CMS Medicare data with 638 Part D claims and 167 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify COREEN MARTINEZ, MS, RN, NP-C, OCN's credentials?
COREEN MARTINEZ, MS, RN, NP-C, OCN's NPI is 1821639923 with credentials MS, RN, NP-C, OCN. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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