2026 NPPES data Gerontology Nurse Practitioner NPI 1972220713
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CATHERINE PARRISH

Gerontology Nurse Practitioner in DURHAM, North Carolina. 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
92
Medicare Part D claims · 13 beneficiaries · Gerontology Nurse Practitioner avg: 1K

What the federal data shows

CATHERINE PARRISH filed 92 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in DURHAM, North Carolina.

92
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.

CATHERINE PARRISH's Medicare Part D volume vs every U.S. prescriber

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

92 0th percentile higher than 0% 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

What does the federal data show about CATHERINE PARRISH?

Quality data not reported

NPI registry status

Active

Issued 10/24/2022

NPI 1972220713

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

92 93% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in North Carolina

How Gerontology Nurse Practitioner compares to other specialties among North Carolina providers

North Carolina providers

Gerontology Nurse Practitioner share within North Carolina

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

Specialty board-certification context

Estimated specialty board-certified rate — Gerontology Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Gerontology Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Gerontology Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Gerontology Nurse Practitioner) — 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).

CATHERINE PARRISH is a Gerontology Nurse Practitioner provider practicing in DURHAM, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1972220713. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CATHERINE PARRISH appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider at 2301 ERWIN RD, DURHAM, NC, 27705, with a listed phone of (919) 684-8111. NPI 1972220713 was issued on 10/24/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PARRISH 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 92 prescription claims written by this provider, covering 13 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.

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

2301 ERWIN RD
DURHAM, NC 27705

Provider Details

NPI 1972220713
Specialty Gerontology Nurse Practitioner
Gender Female
NPI Issued 10/24/2022

Hospital and facility affiliations

Facilities where CATHERINE PARRISH 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.

DUKE HEALTH INTEGRATED PRACTICE INC
DURHAM, NC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

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

92
Total Claims
$4K
Total Drug Cost
13
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
110
Total Day Supply
3,137
Generic Drug Cost
$4K
Antibiotic Claims
21

Patient Demographics

Average Patient Age
58.6 years
Avg HCC Risk Score
6.75

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
19

* 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 CATHERINE PARRISH 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

CATHERINE PARRISH's 92 claims are below the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as PARRISH.

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

Frequently Asked Questions

What is CATHERINE PARRISH's specialty?
CATHERINE PARRISH specializes in Gerontology Nurse Practitioner and practices in DURHAM, North Carolina.
How much does CATHERINE PARRISH prescribe under Medicare Part D?
In 2023, CATHERINE PARRISH wrote 92 Medicare Part D claims totaling $4K in drug costs for 13 beneficiaries.
Where is CATHERINE PARRISH located?
CATHERINE PARRISH is located at 2301 ERWIN RD, DURHAM, NC, 27705. Phone: (919) 684-8111.
What is CATHERINE PARRISH's NPI number?
CATHERINE PARRISH's National Provider Identifier (NPI) is 1972220713, issued on 10/24/2022.
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 CATHERINE PARRISH prescribe most often?
Based on 2023 Medicare Part D data, CATHERINE PARRISH's most frequently prescribed drugs include Sulfamethoxazole-Trimethoprim. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CATHERINE PARRISH accept Medicare?
CATHERINE PARRISH appears in CMS Medicare data with 92 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CATHERINE PARRISH's credentials?
CATHERINE PARRISH's NPI is 1972220713. 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