NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1871423350 RN
Verify on CMS → William Anderson, RN
Registered Nurse in Millersville, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 185,440 in Registered Nurse, 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.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
William Anderson, RN is a Registered Nurse in Millersville, Maryland, listed in the federal CMS National Provider Identifier registry.
- #14
- Registered Nurse rank among Maryland specialties
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.
Federal trust snapshot
What official records show about William Anderson, RN
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1871423350), first enumerated 05/19/2026.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Anderson with other Registered Nurse providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Maryland
- Louis Abanda, RN Upper Marlboro, MD
- Caryn Abbott, RN Pocomoke City, MD
- Bukola Abegunde Owings Mills, MD
- Jamie Abel Linthicum Heights, MD
- Sheri Abell, RN Edgewater, MD
- Charlene Abeln, RN Columbia, MD
Other specialties in Millersville: Behavior Technician (62) · Clinical Social Worker (61) · Mental Health Counselor (44) · Professional Counselor (40)
CMS NPPES provider registry desk
NPI 1871423350 · Registered Nurse
NPI-10 · ENUM-NEW · TAX-MEGA · RX-NONE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1871423350
- ENUM-NEW 2026
- TAX-MEGA 185K Registered Nurse
- RX-NONE No Part D
- BOOK-LIGHT 3,026 in Maryland
- PHOTO-ENUM Sarah Lutgen, MSN, RN · 2026
What does the federal data show about William Anderson, RN?
Quality data not reportedPrimary specialty
Registered Nurse
Specialty distribution in Maryland
How Registered Nurse compares to other specialties among Maryland providers
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 Registered Nurse. 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).
Practice Address
Provider Details
| NPI | 1871423350 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | RN |
| Gender | Male |
| NPI Issued | 05/19/2026 |
Registered Nurse Overview
How William Anderson, RN fits within the Registered Nurse landscape nationally.
185,440
Registered Nurse Providers in US
56
States with Registered Nurse
1,063
Avg Claims per Provider
Nationwide Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Anderson, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2026)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Registered Nurse Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Anderson.
One of 3,026 Registered Nurse providers enrolled in Maryland, 11 are shown on this page.
Bolade Abiola
Waldorf, MD
Dr. Luverne Abogadie
DNP, AGACNP-BC
Silver Spring, MD
Delphine Abongbu
Waldorf, MD
Saramma Abraham
RN
Baltimore, MD
Deborah Abu
RN
Jessup, MD
Compare Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Anderson, RN's specialty? ▼
William Anderson, RN specializes in Registered Nurse and practices in Millersville, Maryland. Credentials: RN.
Where is William Anderson, RN located? ▼
William Anderson, RN is located at 429 RED BIRCH RD, Millersville, MD, 21108. Phone: (410) 855-3432.
What is William Anderson, RN's NPI number? ▼
William Anderson, RN's National Provider Identifier (NPI) is 1871423350, issued on 05/19/2026.
How many Registered Nurse providers are there in the US? ▼
There are 185,440 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,063 Medicare Part D claims per year.
Does William Anderson, RN accept Medicare? ▼
William Anderson, RN appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Anderson, RN's credentials? ▼
William Anderson, RN's NPI is 1871423350 with credentials RN. 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
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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.