2026 NPPES data Gerontology Nurse Practitioner NPI 1578763900 APN
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MARY EILERS, APN

Gerontology Nurse Practitioner in JOHNSON CITY, 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
566
Medicare Part D claims · 30 beneficiaries · Gerontology Nurse Practitioner avg: 1K

What the federal data shows

MARY EILERS, APN filed 566 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in JOHNSON CITY, Texas.

566
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.

MARY EILERS, APN's Medicare Part D volume vs every U.S. prescriber

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

566 Top 34% higher than 66% 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%). This entry sits in this band. 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 MARY EILERS, APN?

Quality data not reported

NPI registry status

Active

Issued 07/24/2007

NPI 1578763900

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

566 56% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

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

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).

MARY EILERS, APN appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding APN credentials at 1100 LINDIG LN, JOHNSON CITY, TX, 78636, with a listed phone of (830) 868-2997. NPI 1578763900 was issued on 07/24/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EILERS 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 566 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $17K 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

1100 LINDIG LN
JOHNSON CITY, TX 78636

Provider Details

NPI 1578763900
Specialty Gerontology Nurse Practitioner
Credentials APN
Gender Female
NPI Issued 07/24/2007

Hospital and facility affiliations

Facilities where MARY EILERS, APN 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.

MILTON W. SHEPPERD, DO, PA
MEADOWLAKES, 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).

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 MARY EILERS, APN. To verify MARY EILERS, APN'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.

566
Total Claims
$17K
Total Drug Cost
30
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
700
Total Day Supply
20,083
Generic Drug Cost
$12K
Antibiotic Claims
22

Patient Demographics

Average Patient Age
89.0 years
Avg HCC Risk Score
1.84
Age Distribution
<65: 0, 65-74: N/A, 75-84: N/A, 85+: 24

Top Prescribed Drugs (Medicare Part D)

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

What MARY EILERS, APN 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
Furosemide
46
Potassium Chloride
41
Levothyroxine Sodium
38
Atorvastatin Calcium
25
Omeprazole
19
Diltiazem 24hr Er (Cd)
Diltiazem Hcl
18
Metoprolol Succinate
17
Amlodipine Besylate
15
Metformin Hcl
15
Mirtazapine
15

* 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 MARY EILERS, APN 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

MARY EILERS, APN's 566 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 EILERS.

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

Frequently Asked Questions

What is MARY EILERS, APN's specialty?
MARY EILERS, APN specializes in Gerontology Nurse Practitioner and practices in JOHNSON CITY, Texas. Credentials: APN.
How much does MARY EILERS, APN prescribe under Medicare Part D?
In 2023, MARY EILERS, APN wrote 566 Medicare Part D claims totaling $17K in drug costs for 30 beneficiaries.
Where is MARY EILERS, APN located?
MARY EILERS, APN is located at 1100 LINDIG LN, JOHNSON CITY, TX, 78636. Phone: (830) 868-2997.
What is MARY EILERS, APN's NPI number?
MARY EILERS, APN's National Provider Identifier (NPI) is 1578763900, issued on 07/24/2007.
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 MARY EILERS, APN prescribe most often?
Based on 2023 Medicare Part D data, MARY EILERS, APN's most frequently prescribed drugs include Furosemide, Potassium Chloride, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARY EILERS, APN accept Medicare?
MARY EILERS, APN appears in CMS Medicare data with 566 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARY EILERS, APN's credentials?
MARY EILERS, APN's NPI is 1578763900 with credentials APN. 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