2026 NPPES data Adult Medicine Physician NPI 1225421472 F.N.P.-C
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ELAINE INMAN-WILLIAMSON, F.N.P.-C

Adult Medicine Physician in AIKEN, South 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
5K
Medicare Part D claims · 498 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$429.11
22 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ELAINE INMAN-WILLIAMSON, F.N.P.-C is a Adult Medicine Physician ([object Object]) practicing in AIKEN, South Carolina with a Medicare Part D prescribing footprint of 5K claims across 498 beneficiaries — 16% brand-name prescribing . Industry payments of $429.11 across 22 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ELAINE INMAN-WILLIAMSON, F.N.P.-C filed 4,888 Medicare Part D claims in 2023 across AIKEN, South Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

ELAINE INMAN-WILLIAMSON, F.N.P.-C practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

ELAINE INMAN-WILLIAMSON, F.N.P.-C at a glance

Quality data not reported

NPI registry status

Active

Issued 03/12/2015

NPI 1225421472

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

4,888 74% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in South Carolina

How Adult Medicine Physician compares to other specialties among South Carolina providers

South Carolina providers

Adult Medicine Physician share within South Carolina

1. Adult Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Medicine Physician share within South Carolina

Specialty board-certification context

Estimated specialty board-certified rate — Adult Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Adult Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Adult Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Adult Medicine Physician) — 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).

ELAINE INMAN-WILLIAMSON, F.N.P.-C is a Adult Medicine Physician provider practicing in AIKEN, South Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: F.N.P.-C. NPI: 1225421472. 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.

ELAINE INMAN-WILLIAMSON, F.N.P.-C appears in the CMS NPPES registry as a Adult Medicine Physician provider holding F.N.P.-C credentials at 951 MILLBROOK AVE, AIKEN, SC, 29803, with a listed phone of (803) 643-9016. NPI 1225421472 was issued on 03/12/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what INMAN-WILLIAMSON 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 4,888 prescription claims written by this provider, covering 498 Medicare beneficiaries and totaling roughly $629K in drug spend, split 16% brand-name and 84% generic by claim count, with an opioid prescribing rate of 1.0%. 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.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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

951 MILLBROOK AVE
AIKEN, SC 29803

Provider Details

NPI 1225421472
Specialty Adult Medicine Physician
Credentials F.N.P.-C
Gender Female
NPI Issued 03/12/2015

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 ELAINE INMAN-WILLIAMSON, F.N.P.-C. Source: openpaymentsdata.cms.gov.

Total received

$429

Largest payer

Abbott Laboratories

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 · Typical

ELAINE INMAN-WILLIAMSON, F.N.P.-C — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 4,888 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.

4,888
Total Claims
$629K
Total Drug Cost
498
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
11,077
Total Day Supply
322,199
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$537K
Generic Drug Cost
$84K
Opioid Claims
50 (1.0% rate)
Antibiotic Claims
135

Patient Demographics

Average Patient Age
74.9 years
Avg HCC Risk Score
1.17
Gender Split
71% female / 29% male
Age Distribution
<65: 33, 65-74: 225, 75-84: 174, 85+: 66

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
293
Atorvastatin Calcium
258
Rosuvastatin Calcium
209
Losartan Potassium
142
Lisinopril
127
Hydrochlorothiazide
119
Omeprazole
113
Amlodipine Besylate
111
Gabapentin
103
Ozempic
Semaglutide
101

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

Adult Medicine Physician Overview

How ELAINE INMAN-WILLIAMSON, F.N.P.-C fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

ELAINE INMAN-WILLIAMSON, F.N.P.-C's 4,888 claims are above the specialty average of 2,807.

Nearby Adult Medicine Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as INMAN-WILLIAMSON.

Compare Adult Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ELAINE INMAN-WILLIAMSON, F.N.P.-C's specialty?
ELAINE INMAN-WILLIAMSON, F.N.P.-C specializes in Adult Medicine Physician and practices in AIKEN, South Carolina. Credentials: F.N.P.-C.
How much does ELAINE INMAN-WILLIAMSON, F.N.P.-C prescribe under Medicare Part D?
In 2023, ELAINE INMAN-WILLIAMSON, F.N.P.-C wrote 4,888 Medicare Part D claims totaling $629K in drug costs for 498 beneficiaries.
Where is ELAINE INMAN-WILLIAMSON, F.N.P.-C located?
ELAINE INMAN-WILLIAMSON, F.N.P.-C is located at 951 MILLBROOK AVE, AIKEN, SC, 29803. Phone: (803) 643-9016.
What is ELAINE INMAN-WILLIAMSON, F.N.P.-C's NPI number?
ELAINE INMAN-WILLIAMSON, F.N.P.-C's National Provider Identifier (NPI) is 1225421472, issued on 03/12/2015.
Does ELAINE INMAN-WILLIAMSON, F.N.P.-C prescribe more brand-name or generic drugs?
ELAINE INMAN-WILLIAMSON, F.N.P.-C's prescribing is 16% brand-name and 84% generic drugs by claim count, with $537K in brand drug costs.
Does ELAINE INMAN-WILLIAMSON, F.N.P.-C prescribe opioids?
Yes, ELAINE INMAN-WILLIAMSON, F.N.P.-C had 50 opioid claims in 2023 with an opioid prescribing rate of 1.0%.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does ELAINE INMAN-WILLIAMSON, F.N.P.-C prescribe most often?
Based on 2023 Medicare Part D data, ELAINE INMAN-WILLIAMSON, F.N.P.-C's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ELAINE INMAN-WILLIAMSON, F.N.P.-C accept Medicare?
ELAINE INMAN-WILLIAMSON, F.N.P.-C appears in CMS Medicare data with 4,888 Part D claims and 498 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ELAINE INMAN-WILLIAMSON, F.N.P.-C's credentials?
ELAINE INMAN-WILLIAMSON, F.N.P.-C's NPI is 1225421472 with credentials F.N.P.-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