2026 NPPES data Gynecology Physician NPI 1770584799 M.D.
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NANCY WINDHAM, M.D.

Gynecology Physician in FLORENCE, 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
500
Medicare Part D claims · 165 beneficiaries · Gynecology Physician avg: 295
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

NANCY WINDHAM, M.D. filed 500 Medicare Part D claims in 2023 as a Gynecology Physician in FLORENCE, South Carolina, prescribing 85% generic.

500
Part D claims, 2023
85%
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.

NANCY WINDHAM, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

500 Top 34% higher than 66% 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%). This entry sits in this band. 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)

NANCY WINDHAM, M.D. 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 NANCY WINDHAM, M.D.?

Quality data not reported

NPI registry status

Active

Issued 08/02/2005

NPI 1770584799

Primary specialty

Gynecology Physician

Niche

3,902 US NPIs in this specialty

Medicare Part D claims

500 69% vs specialty avg

2023 prescription claims

Specialty avg: 295

Specialty distribution in South Carolina

How Gynecology Physician compares to other specialties among South Carolina providers

South Carolina providers

Gynecology Physician share within South Carolina

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

Specialty board-certification context

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

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

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

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

NANCY WINDHAM, M.D. appears in the CMS NPPES registry as a Gynecology Physician provider holding M.D. credentials at 509 S COIT ST, FLORENCE, SC, 29501, with a listed phone of (843) 676-1435. NPI 1770584799 was issued on 08/02/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WINDHAM 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 500 prescription claims written by this provider, covering 165 Medicare beneficiaries and totaling roughly $33K in drug spend, split 15% brand-name and 85% 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.

Gynecology Physician is a narrow specialty nationwide, with 3,902 enrolled providers across 53 states and an average of 295 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

509 S COIT ST
FLORENCE, SC 29501

Provider Details

NPI 1770584799
Specialty Gynecology Physician
Credentials M.D.
Gender Female
NPI Issued 08/02/2005

Brand vs generic prescribing mix · Typical

NANCY WINDHAM, M.D. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 500 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.

500
Total Claims
$33K
Total Drug Cost
165
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
903
Total Day Supply
22,583
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$19K
Generic Drug Cost
$14K
Antibiotic Claims
55

Patient Demographics

Average Patient Age
68.8 years
Avg HCC Risk Score
0.97

Top Prescribed Drugs (Medicare Part D)

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

What NANCY WINDHAM, M.D. 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
Estradiol
76
Fluconazole
76
Ibandronate Sodium
28
Levothyroxine Sodium
28
Valacyclovir
Valacyclovir Hcl
24
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
23
Alendronate Sodium
20
Oxybutynin Chloride
20
Clobetasol Propionate
16
Estradiol (Twice Weekly)
Estradiol
14

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

Gynecology Physician Overview

How NANCY WINDHAM, M.D. fits within the Gynecology Physician landscape nationally.

3,902
Gynecology Physician Providers in US
53
States with Gynecology Physician
295
Avg Claims per Provider

NANCY WINDHAM, M.D.'s 500 claims are above the specialty average of 295.

Nearby Gynecology Physician Providers in South Carolina

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

Compare Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NANCY WINDHAM, M.D.'s specialty?
NANCY WINDHAM, M.D. specializes in Gynecology Physician and practices in FLORENCE, South Carolina. Credentials: M.D..
How much does NANCY WINDHAM, M.D. prescribe under Medicare Part D?
In 2023, NANCY WINDHAM, M.D. wrote 500 Medicare Part D claims totaling $33K in drug costs for 165 beneficiaries.
Where is NANCY WINDHAM, M.D. located?
NANCY WINDHAM, M.D. is located at 509 S COIT ST, FLORENCE, SC, 29501. Phone: (843) 676-1435.
What is NANCY WINDHAM, M.D.'s NPI number?
NANCY WINDHAM, M.D.'s National Provider Identifier (NPI) is 1770584799, issued on 08/02/2005.
Does NANCY WINDHAM, M.D. prescribe more brand-name or generic drugs?
NANCY WINDHAM, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $19K in brand drug costs.
How many Gynecology Physician providers are there in the US?
There are 3,902 Gynecology Physician providers across 53 states in the US. The average Gynecology Physician provider writes 295 Medicare Part D claims per year.
What drugs does NANCY WINDHAM, M.D. prescribe most often?
Based on 2023 Medicare Part D data, NANCY WINDHAM, M.D.'s most frequently prescribed drugs include Estradiol, Fluconazole, Ibandronate Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NANCY WINDHAM, M.D. accept Medicare?
NANCY WINDHAM, M.D. appears in CMS Medicare data with 500 Part D claims and 165 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NANCY WINDHAM, M.D.'s credentials?
NANCY WINDHAM, M.D.'s NPI is 1770584799 with credentials M.D.. 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