NPI registry status
Active
2026 NPPES data Gerontology Nurse Practitioner NPI 1639510704 NP
Verify on CMS → Stanley Darnell, NP
Gerontology Nurse Practitioner in Greenville, South Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,706 in Gerontology 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
361
Medicare Part D claims · 191 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Stanley Darnell, NP filed 361 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in Greenville, South Carolina.
- 361
- 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.
Stanley Darnell, NP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
361 Top 43% higher than 57% of 1,370,886 prescribers
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 Stanley Darnell, NP?
Quality data not reportedPrimary specialty
Gerontology Nurse Practitioner
Medicare Part D claims
361 72% vs specialty avg
Specialty distribution in South Carolina
How Gerontology Nurse Practitioner compares to other specialties among South Carolina 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 Gerontology 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).
Stanley Darnell, NP appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding NP credentials at 109 DOCTORS DR, Greenville, SC, 29605, with a listed phone of (864) 797-7150. NPI 1639510704 was issued on 07/17/2013.
Medicare Part D records for calendar year 2023 show 361 prescription claims written by this provider, covering 191 Medicare beneficiaries and totaling roughly $7K in drug spend, with an opioid prescribing rate of 38.5%.
Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,706 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
Provider Details
| NPI | 1639510704 |
|---|---|
| Specialty | Gerontology Nurse Practitioner |
| Credentials | NP |
| Gender | Male |
| NPI Issued | 07/17/2013 |
Hospital and facility affiliations
Facilities where Stanley Darnell, NP 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.
Prisma Health University Medical Group
Greenville, SC
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.
361
Total Claims
$7K
Total Drug Cost
191
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 367
- Total Day Supply
- 3,912
- Generic Drug Cost
- $4K
- Opioid Claims
- 139 (38.5% rate)
Patient Demographics
- Average Patient Age
- 71.0 years
- Avg HCC Risk Score
- 1.34
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 23, 65-74: 95, 75-84: 62, 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 Stanley Darnell, NP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
65 claims
- Oxycodone Hcl
Oxycodone Hcl
55 claims
- Gabapentin
Gabapentin
35 claims
- Methylprednisolone
Methylprednisolone
34 claims
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
28 claims
- Levetiracetam 17
Levetiracetam
17 claims
- Naloxone Hcl 17
Naloxone Hcl
17 claims
- Tramadol Hcl 15
Tramadol Hcl
15 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 65 |
| Oxycodone Hcl | 55 |
| Gabapentin | 35 |
| Methylprednisolone | 34 |
| Cyclobenzaprine Hcl | 28 |
| Levetiracetam | 17 |
| Naloxone Hcl | 17 |
| Tramadol Hcl | 15 |
| Prednisone | 12 |
| Meloxicam | 11 |
* 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 Stanley Darnell, NP fits within the Gerontology Nurse Practitioner landscape nationally.
9,706
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider
Stanley Darnell, NP's 361 claims are below the specialty average of 1,283.
Nearby Gerontology Nurse Practitioner Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Darnell.
Dr. Gina Allen
NP
Kershaw, SC
Paula Allen
Columbia, SC
Dr. Baby Ruth Alvarez
APRN
Columbia, SC
Dr. William Andrews
APRN
Charleston, SC
Dr. Kristin Ansley
NURSE PRACTITIONER,
Mount Pleasant, SC
Compare Gerontology Nurse Practitioner nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the South Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gerontology Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore South Carolina
Frequently Asked Questions
What is Stanley Darnell, NP's specialty? ▼
Stanley Darnell, NP specializes in Gerontology Nurse Practitioner and practices in Greenville, South Carolina. Credentials: NP.
How much does Stanley Darnell, NP prescribe under Medicare Part D? ▼
In 2023, Stanley Darnell, NP wrote 361 Medicare Part D claims totaling $7K in drug costs for 191 beneficiaries.
Where is Stanley Darnell, NP located? ▼
Stanley Darnell, NP is located at 109 DOCTORS DR, Greenville, SC, 29605. Phone: (864) 797-7150.
What is Stanley Darnell, NP's NPI number? ▼
Stanley Darnell, NP's National Provider Identifier (NPI) is 1639510704, issued on 07/17/2013.
Does Stanley Darnell, NP prescribe opioids? ▼
Yes, Stanley Darnell, NP had 139 opioid claims in 2023 with an opioid prescribing rate of 38.5%.
How many Gerontology Nurse Practitioner providers are there in the US? ▼
There are 9,706 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 Stanley Darnell, NP prescribe most often? ▼
Based on 2023 Medicare Part D data, Stanley Darnell, NP's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stanley Darnell, NP accept Medicare? ▼
Stanley Darnell, NP appears in CMS Medicare data with 361 Part D claims and 191 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stanley Darnell, NP's credentials? ▼
Stanley Darnell, NP's NPI is 1639510704 with credentials NP. 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 (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
Compiled from official public sources by the PlainDoctor editorial team.