2026 NPPES data Internal Medicine Physician NPI 1487606612 MD
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Cynthia Wilberding, MD

Internal Medicine Physician in Kershaw, 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
9K
Medicare Part D claims · 504 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

Cynthia Wilberding, MD filed 9,211 Medicare Part D claims in 2023 as a Internal Medicine Physician in Kershaw, South Carolina, prescribing 90% generic.

9K
Part D claims, 2023
90%
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.

Cynthia Wilberding, MD's Medicare Part D volume vs every U.S. prescriber

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

9,211 Top 2% higher than 98% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

Cynthia Wilberding, 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 Cynthia Wilberding, MD?

Quality data not reported

NPI registry status

Active

Issued 05/16/2006

NPI 1487606612

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

9,211 239% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in South Carolina

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

South Carolina providers

Internal Medicine Physician share within South Carolina

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

Specialty board-certification context

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

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

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

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

Cynthia Wilberding, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 216 E MARION ST, Kershaw, SC, 29067, with a listed phone of (803) 475-3475. NPI 1487606612 was issued on 05/16/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Wilberding 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 9,211 prescription claims written by this provider, covering 504 Medicare beneficiaries and totaling roughly $649K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 4.7%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

216 E MARION ST
Kershaw, SC 29067

Provider Details

NPI 1487606612
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 05/16/2006

Brand vs generic prescribing mix · Typical

Cynthia Wilberding, MD — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 9,211 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.

9,211
Total Claims
$649K
Total Drug Cost
504
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
18,417
Total Day Supply
545,703
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$506K
Generic Drug Cost
$141K
Opioid Claims
429 (4.7% rate)
Antibiotic Claims
83

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
1.25
Gender Split
59% female / 41% male
Age Distribution
<65: 72, 65-74: 197, 75-84: 165, 85+: 70

Top Prescribed Drugs (Medicare Part D)

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

What Cynthia Wilberding, MD 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
Atorvastatin Calcium
438
Amlodipine Besylate
348
Levothyroxine Sodium
336
Gabapentin
291
Lisinopril
280
Rosuvastatin Calcium
245
Omeprazole
233
Metformin Hcl
225
Sertraline Hcl
177
Hydrochlorothiazide
169

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

Internal Medicine Physician Overview

How Cynthia Wilberding, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Cynthia Wilberding, MD's 9,211 claims are above the specialty average of 2,716.

Nearby Internal 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 Wilberding.

Compare Internal Medicine Physician 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 Internal Medicine Physician 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.

Frequently Asked Questions

What is Cynthia Wilberding, MD's specialty?
Cynthia Wilberding, MD specializes in Internal Medicine Physician and practices in Kershaw, South Carolina. Credentials: MD.
How much does Cynthia Wilberding, MD prescribe under Medicare Part D?
In 2023, Cynthia Wilberding, MD wrote 9,211 Medicare Part D claims totaling $649K in drug costs for 504 beneficiaries.
Where is Cynthia Wilberding, MD located?
Cynthia Wilberding, MD is located at 216 E MARION ST, Kershaw, SC, 29067. Phone: (803) 475-3475.
What is Cynthia Wilberding, MD's NPI number?
Cynthia Wilberding, MD's National Provider Identifier (NPI) is 1487606612, issued on 05/16/2006.
Does Cynthia Wilberding, MD prescribe more brand-name or generic drugs?
Cynthia Wilberding, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $506K in brand drug costs.
Does Cynthia Wilberding, MD prescribe opioids?
Yes, Cynthia Wilberding, MD had 429 opioid claims in 2023 with an opioid prescribing rate of 4.7%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Cynthia Wilberding, MD prescribe most often?
Based on 2023 Medicare Part D data, Cynthia Wilberding, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Cynthia Wilberding, MD accept Medicare?
Cynthia Wilberding, MD appears in CMS Medicare data with 9,211 Part D claims and 504 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cynthia Wilberding, MD's credentials?
Cynthia Wilberding, MD's NPI is 1487606612 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