2026 NPPES data Gerontology Registered Nurse NPI 1538539374 APRN, FNP-C
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SHEILA MILLER, APRN, FNP-C

Gerontology Registered Nurse in ARDMORE, Oklahoma. 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
3K
Medicare Part D claims · 70 beneficiaries · Gerontology Registered Nurse avg: 2K
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$51.53
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: SHEILA MILLER, APRN, FNP-C is a Gerontology Registered Nurse ([object Object]) practicing in ARDMORE, Oklahoma with a Medicare Part D prescribing footprint of 3K claims across 70 beneficiaries — 27% brand-name prescribing . Industry payments of $51.53 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: SHEILA MILLER, APRN, FNP-C filed 2,608 Medicare Part D claims in 2023 across ARDMORE, Oklahoma. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

SHEILA MILLER, APRN, FNP-C at a glance

Quality data not reported

NPI registry status

Active

Issued 10/06/2015

NPI 1538539374

Primary specialty

Gerontology Registered Nurse

Niche

749 US NPIs in this specialty

Medicare Part D claims

2,608 52% vs specialty avg

2023 prescription claims

Specialty avg: 1,721

Specialty distribution in Oklahoma

How Gerontology Registered Nurse compares to other specialties among Oklahoma providers

Oklahoma providers

Gerontology Registered Nurse share within Oklahoma

1. Gerontology Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gerontology Registered Nurse share within Oklahoma

Specialty board-certification context

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

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

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

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

SHEILA MILLER, APRN, FNP-C is a Gerontology Registered Nurse provider practicing in ARDMORE, Oklahoma, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: APRN, FNP-C. NPI: 1538539374. 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.

SHEILA MILLER, APRN, FNP-C appears in the CMS NPPES registry as a Gerontology Registered Nurse provider holding APRN, FNP-C credentials at 1015 S COMMERCE ST, ARDMORE, OK, 73401, with a listed phone of (580) 221-5603. NPI 1538539374 was issued on 10/06/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MILLER 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 2,608 prescription claims written by this provider, covering 70 Medicare beneficiaries and totaling roughly $332K in drug spend, split 27% brand-name and 73% generic by claim count, with an opioid prescribing rate of 1.2%. 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 Registered Nurse is a narrow specialty nationwide, with 749 enrolled providers across 48 states and an average of 1,721 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

1015 S COMMERCE ST
ARDMORE, OK 73401

Provider Details

NPI 1538539374
Specialty Gerontology Registered Nurse
Credentials APRN, FNP-C
Gender Female
NPI Issued 10/06/2015

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 SHEILA MILLER, APRN, FNP-C. Source: openpaymentsdata.cms.gov.

Total received

$52

Largest payer

Daiichi Sankyo 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.

Brand vs generic prescribing mix · Above average

SHEILA MILLER, APRN, FNP-C — brand share 27.0%
Specialty average (est.)

27% brand-name claims vs 73% generic, on 2,608 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.

2,608
Total Claims
$332K
Total Drug Cost
70
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,661
Total Day Supply
78,101
Brand vs Generic
27% brand / 73% generic
Brand Drug Cost
$230K
Generic Drug Cost
$101K
Opioid Claims
32 (1.2% rate)
Antibiotic Claims
39

Patient Demographics

Average Patient Age
68.5 years
Avg HCC Risk Score
1.33
Gender Split
60% female / 40% male
Age Distribution
<65: 21, 65-74: 29, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Gabapentin
134
Losartan Potassium
124
Omeprazole
120
Ozempic
Semaglutide
91
Atorvastatin Calcium
89
Potassium Chloride
89
Enalapril Maleate
82
Amlodipine Besylate
72
Hydrochlorothiazide
72
Meloxicam
71

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

Gerontology Registered Nurse Overview

How SHEILA MILLER, APRN, FNP-C fits within the Gerontology Registered Nurse landscape nationally.

749
Gerontology Registered Nurse Providers in US
48
States with Gerontology Registered Nurse
1,721
Avg Claims per Provider

SHEILA MILLER, APRN, FNP-C's 2,608 claims are above the specialty average of 1,721.

Nearby Gerontology Registered Nurse Providers in Oklahoma

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

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

Frequently Asked Questions

What is SHEILA MILLER, APRN, FNP-C's specialty?
SHEILA MILLER, APRN, FNP-C specializes in Gerontology Registered Nurse and practices in ARDMORE, Oklahoma. Credentials: APRN, FNP-C.
How much does SHEILA MILLER, APRN, FNP-C prescribe under Medicare Part D?
In 2023, SHEILA MILLER, APRN, FNP-C wrote 2,608 Medicare Part D claims totaling $332K in drug costs for 70 beneficiaries.
Where is SHEILA MILLER, APRN, FNP-C located?
SHEILA MILLER, APRN, FNP-C is located at 1015 S COMMERCE ST, ARDMORE, OK, 73401. Phone: (580) 221-5603.
What is SHEILA MILLER, APRN, FNP-C's NPI number?
SHEILA MILLER, APRN, FNP-C's National Provider Identifier (NPI) is 1538539374, issued on 10/06/2015.
Does SHEILA MILLER, APRN, FNP-C prescribe more brand-name or generic drugs?
SHEILA MILLER, APRN, FNP-C's prescribing is 27% brand-name and 73% generic drugs by claim count, with $230K in brand drug costs.
Does SHEILA MILLER, APRN, FNP-C prescribe opioids?
Yes, SHEILA MILLER, APRN, FNP-C had 32 opioid claims in 2023 with an opioid prescribing rate of 1.2%.
How many Gerontology Registered Nurse providers are there in the US?
There are 749 Gerontology Registered Nurse providers across 48 states in the US. The average Gerontology Registered Nurse provider writes 1,721 Medicare Part D claims per year.
What drugs does SHEILA MILLER, APRN, FNP-C prescribe most often?
Based on 2023 Medicare Part D data, SHEILA MILLER, APRN, FNP-C's most frequently prescribed drugs include Gabapentin, Losartan Potassium, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHEILA MILLER, APRN, FNP-C accept Medicare?
SHEILA MILLER, APRN, FNP-C appears in CMS Medicare data with 2,608 Part D claims and 70 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHEILA MILLER, APRN, FNP-C's credentials?
SHEILA MILLER, APRN, FNP-C's NPI is 1538539374 with credentials APRN, FNP-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