William Crosswell, MD
Retina Specialist (Ophthalmology) Physician in Columbia, 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 913 in Retina Specialist (Ophthalmology) Physician, 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.
What the federal data shows
William Crosswell, MD is a Retina Specialist (Ophthalmology) Physician in Columbia, South Carolina, listed in the federal CMS National Provider Identifier registry.
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.
William Crosswell, 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 William Crosswell, MD?
Quality data not reportedPrimary specialty
Specialty distribution in South Carolina
How Retina Specialist (Ophthalmology) Physician compares to other specialties among South Carolina providers
Retina Specialist (Ophthalmology) Physician ranks #246 among South Carolina's specialties (0% of in-state providers)
Each bar is a specialty's share of the South Carolina provider total, by primary NUCC taxonomy. The highlighted bar is Retina Specialist (Ophthalmology) Physician; the long tail of smaller specialties is omitted for legibility.
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 Retina Specialist (Ophthalmology) Physician. 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).
William Crosswell, MD appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding MD credentials at 1920 PICKENS ST, Columbia, SC, 29201, with a listed phone of (803) 779-3070. NPI 1457301996 was issued on 05/12/2006.
Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal, many Retina Specialist (Ophthalmology) Physician providers operate outside Part D entirely.
Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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 | 1457301996 |
|---|---|
| Specialty | Retina Specialist (Ophthalmology) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/12/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm William Crosswell, MD's current license status, disciplinary history, and board certifications with the South Carolina Board of Medical Examiners in South Carolina before relying on this page for a clinical or care decision.
How we sourced this profile
Profile fields combine the CMS NPPES monthly snapshot (provider directory, taxonomy, and address) with calendar-year 2023 Medicare Part D and MIPS public-use files when records are present. NPI 1457301996 is the unique 10-digit identifier CMS uses to link Crosswell across every Medicare, Medicaid, and HIPAA-covered transaction. Read full methodology →
Retina Specialist (Ophthalmology) Physician Overview
How William Crosswell, MD fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.
Nearby Retina Specialist (Ophthalmology) Physician Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Crosswell.
Compare Retina Specialist (Ophthalmology) 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 Retina Specialist (Ophthalmology) 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
Explore South Carolina
Frequently Asked Questions
What is William Crosswell, MD's specialty? ▼
Where is William Crosswell, MD located? ▼
What is William Crosswell, MD's NPI number? ▼
How many Retina Specialist (Ophthalmology) Physician providers are there in the US? ▼
Does William Crosswell, MD accept Medicare? ▼
How can I verify William Crosswell, MD's credentials? ▼
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.
- 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