NPI registry status
Active
2026 NPPES data Clinical Pathology/Laboratory Medicine Physician NPI 1740717396 MD, PHD
Verify on CMS → Nicolas Giraldo Castillo, MD, PHD
Clinical Pathology/Laboratory Medicine Physician in Baltimore, 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 1,229 in Clinical Pathology/Laboratory Medicine 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.
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
Nicolas Giraldo Castillo, MD, PHD is a Clinical Pathology/Laboratory Medicine Physician in Baltimore, Maryland, listed in the federal CMS National Provider Identifier registry.
- #249
- Clinical Pathology/Laboratory Medicine Physician 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.
CMS NPPES provider registry desk
NPI 1740717396 · Clinical Pathology/Laboratory Medicine Physician
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1740717396
- ENUM-RECENT 2017
- TAX-NARROW 1,229
- RX-NONE No Part D
- BOOK-THIN 21 in Maryland
- PHOTO-ENUM Adam Bailey · 2017
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Board-eligible specialty (heuristic, not verified)
Nicolas Giraldo Castillo, MD, PHD 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 Nicolas Giraldo Castillo, MD, PHD?
Quality data not reportedPrimary specialty
Clinical Pathology/Laboratory Medicine Physician
Specialty distribution in Maryland
How Clinical Pathology/Laboratory Medicine Physician 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 Clinical Pathology/Laboratory Medicine 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).
Practice Address
Provider Details
| NPI | 1740717396 |
|---|---|
| Specialty | Clinical Pathology/Laboratory Medicine Physician |
| Credentials | MD, PHD |
| Gender | Male |
| NPI Issued | 05/15/2017 |
More Clinical Pathology/Laboratory Medicine Physician in MD →
All providers in Maryland →
Compare specialties →
Clinical Pathology/Laboratory Medicine Physician Overview
How Nicolas Giraldo Castillo, MD, PHD fits within the Clinical Pathology/Laboratory Medicine Physician landscape nationally.
1,229
Clinical Pathology/Laboratory Medicine Physician Providers in US
51
States with Clinical Pathology/Laboratory Medicine Physician
149
Avg Claims per Provider
Nationwide Clinical Pathology/Laboratory Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Giraldo Castillo, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2017)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Clinical Pathology/Laboratory Medicine Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Giraldo Castillo.
One of 21 Clinical Pathology/Laboratory Medicine Physician providers enrolled in Maryland, 5 are shown here.
Frequently Asked Questions
What is Nicolas Giraldo Castillo, MD, PHD's specialty? ▼
Nicolas Giraldo Castillo, MD, PHD specializes in Clinical Pathology/Laboratory Medicine Physician and practices in Baltimore, Maryland. Credentials: MD, PHD.
Where is Nicolas Giraldo Castillo, MD, PHD located? ▼
Nicolas Giraldo Castillo, MD, PHD is located at 600 N WOLFE ST RM 401, Baltimore, MD, 21287. Phone: (410) 955-3980.
What is Nicolas Giraldo Castillo, MD, PHD's NPI number? ▼
Nicolas Giraldo Castillo, MD, PHD's National Provider Identifier (NPI) is 1740717396, issued on 05/15/2017.
How many Clinical Pathology/Laboratory Medicine Physician providers are there in the US? ▼
There are 1,229 Clinical Pathology/Laboratory Medicine Physician providers across 51 states in the US. The average Clinical Pathology/Laboratory Medicine Physician provider writes 149 Medicare Part D claims per year.
Does Nicolas Giraldo Castillo, MD, PHD accept Medicare? ▼
Nicolas Giraldo Castillo, MD, PHD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nicolas Giraldo Castillo, MD, PHD's credentials? ▼
Nicolas Giraldo Castillo, MD, PHD's NPI is 1740717396 with credentials MD, PHD. 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 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
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 May 2026.