2026 NPPES data Pediatric Nephrology Physician NPI 1942435789 MD
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OANA NICOARA, MD

Pediatric Nephrology Physician in CHARLESTON, 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
50
Medicare Part D claims · Pediatric Nephrology Physician avg: 97
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

OANA NICOARA, MD filed 50 Medicare Part D claims in 2023 as a Pediatric Nephrology Physician in CHARLESTON, South Carolina, prescribing 70% generic.

50
Part D claims, 2023
70%
generic prescribing

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.

OANA NICOARA, MD's Medicare Part D volume vs every U.S. prescriber

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

50 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

Board-eligible specialty (heuristic — not verified)

OANA NICOARA, MD 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).

What does the federal data show about OANA NICOARA, MD?

Quality data not reported

NPI registry status

Active

Issued 05/22/2009

NPI 1942435789

Primary specialty

Pediatric Nephrology Physician

Niche

723 US NPIs in this specialty

Medicare Part D claims

50 48% vs specialty avg

2023 prescription claims

Specialty avg: 97

Specialty distribution in South Carolina

How Pediatric Nephrology Physician compares to other specialties among South Carolina providers

South Carolina providers

Pediatric Nephrology Physician share within South Carolina

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

Specialty board-certification context

Estimated specialty board-certified rate — Pediatric Nephrology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Pediatric Nephrology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pediatric Nephrology 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).

OANA NICOARA, MD is a Pediatric Nephrology Physician provider practicing in CHARLESTON, South Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1942435789. 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.

OANA NICOARA, MD appears in the CMS NPPES registry as a Pediatric Nephrology Physician provider holding MD credentials at 171 ASHLEY AVE, CHARLESTON, SC, 29425, with a listed phone of (843) 792-8904. NPI 1942435789 was issued on 05/22/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NICOARA 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 50 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $16K in drug spend, split 30% brand-name and 70% generic by claim count. 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.

Pediatric Nephrology Physician is a narrow specialty nationwide, with 723 enrolled providers across 50 states and an average of 97 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

171 ASHLEY AVE
CHARLESTON, SC 29425

Provider Details

NPI 1942435789
Specialty Pediatric Nephrology Physician
Credentials MD
Gender Female
NPI Issued 05/22/2009

Brand vs generic prescribing mix · Above average

OANA NICOARA, MD — brand share 30.0%
Specialty average (est.)

30% brand-name claims vs 70% generic, on 50 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.

50
Total Claims
$16K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
52
Total Day Supply
1,503
Brand vs Generic
30% brand / 70% generic
Brand Drug Cost
$14K
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
17.6 years
Avg HCC Risk Score
6.62

Pediatric Nephrology Physician Overview

How OANA NICOARA, MD fits within the Pediatric Nephrology Physician landscape nationally.

723
Pediatric Nephrology Physician Providers in US
50
States with Pediatric Nephrology Physician
97
Avg Claims per Provider

OANA NICOARA, MD's 50 claims are below the specialty average of 97.

Nearby Pediatric Nephrology Physician Providers in South Carolina

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

Compare Pediatric Nephrology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is OANA NICOARA, MD's specialty?
OANA NICOARA, MD specializes in Pediatric Nephrology Physician and practices in CHARLESTON, South Carolina. Credentials: MD.
How much does OANA NICOARA, MD prescribe under Medicare Part D?
In 2023, OANA NICOARA, MD wrote 50 Medicare Part D claims totaling $16K in drug costs for N/A beneficiaries.
Where is OANA NICOARA, MD located?
OANA NICOARA, MD is located at 171 ASHLEY AVE, CHARLESTON, SC, 29425. Phone: (843) 792-8904.
What is OANA NICOARA, MD's NPI number?
OANA NICOARA, MD's National Provider Identifier (NPI) is 1942435789, issued on 05/22/2009.
Does OANA NICOARA, MD prescribe more brand-name or generic drugs?
OANA NICOARA, MD's prescribing is 30% brand-name and 70% generic drugs by claim count, with $14K in brand drug costs.
How many Pediatric Nephrology Physician providers are there in the US?
There are 723 Pediatric Nephrology Physician providers across 50 states in the US. The average Pediatric Nephrology Physician provider writes 97 Medicare Part D claims per year.
Does OANA NICOARA, MD accept Medicare?
OANA NICOARA, MD appears in CMS Medicare data with 50 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify OANA NICOARA, MD's credentials?
OANA NICOARA, MD's NPI is 1942435789 with credentials MD. 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