NPI registry status
Active
2026 NPPES data Neonatal-Perinatal Medicine Physician NPI 1629020441 MD
Verify on CMS → Sonia Cahanap-Mercado, MD
Neonatal-Perinatal Medicine Physician in Rock Hill, 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 5,603 in Neonatal-Perinatal 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
Sonia Cahanap-Mercado, MD is a Neonatal-Perinatal Medicine Physician in Rock Hill, South Carolina, listed in the federal CMS National Provider Identifier registry.
- #104
- Neonatal-Perinatal Medicine Physician rank among South Carolina 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 1629020441 · Neonatal-Perinatal Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1629020441
- ENUM-LEGACY 2006
- TAX-MID 6K Neonatal-Perinatal Medicine
- RX-NONE No Part D
- BOOK-THIN 84 in South Carolina
- PHOTO-ENUM Jeffrey Shenberger · 2006
◑
Board-eligible specialty (heuristic, not verified)
Sonia Cahanap-Mercado, 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 Sonia Cahanap-Mercado, MD?
Quality data not reportedPrimary specialty
Neonatal-Perinatal Medicine Physician
Specialty distribution in South Carolina
How Neonatal-Perinatal Medicine Physician compares to other specialties among South Carolina 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 Neonatal-Perinatal 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 | 1629020441 |
|---|---|
| Specialty | Neonatal-Perinatal Medicine Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 05/17/2006 |
More Neonatal-Perinatal Medicine Physician in SC →
All providers in South Carolina →
Compare specialties →
Neonatal-Perinatal Medicine Physician Overview
How Sonia Cahanap-Mercado, MD fits within the Neonatal-Perinatal Medicine Physician landscape nationally.
5,603
Neonatal-Perinatal Medicine Physician Providers in US
52
States with Neonatal-Perinatal Medicine Physician
56
Avg Claims per Provider
Nationwide Neonatal-Perinatal Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Cahanap-Mercado, both outside South Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neonatal-Perinatal 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 Cahanap-Mercado.
One of 84 Neonatal-Perinatal Medicine Physician providers enrolled in South Carolina, 5 are shown here.
Dr. Thomas Allred
MD
Spartanburg, SC
Dr. Uma Amarnath
MD
Columbia, SC
Dr. David Annibale
MD
Charleston, SC
Dr. John Bendeck
M.D.
Columbia, SC
Dr. Andrew Bowe
D.O.
Spartanburg, SC
Compare Neonatal-Perinatal Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Sonia Cahanap-Mercado, MD's specialty? ▼
Sonia Cahanap-Mercado, MD specializes in Neonatal-Perinatal Medicine Physician and practices in Rock Hill, South Carolina. Credentials: MD.
Where is Sonia Cahanap-Mercado, MD located? ▼
Sonia Cahanap-Mercado, MD is located at 222 S HERLONG AVENUE, Rock Hill, SC, 29732. Phone: (803) 909-2041.
What is Sonia Cahanap-Mercado, MD's NPI number? ▼
Sonia Cahanap-Mercado, MD's National Provider Identifier (NPI) is 1629020441, issued on 05/17/2006.
How many Neonatal-Perinatal Medicine Physician providers are there in the US? ▼
There are 5,603 Neonatal-Perinatal Medicine Physician providers across 52 states in the US. The average Neonatal-Perinatal Medicine Physician provider writes 56 Medicare Part D claims per year.
Does Sonia Cahanap-Mercado, MD accept Medicare? ▼
Sonia Cahanap-Mercado, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sonia Cahanap-Mercado, MD's credentials? ▼
Sonia Cahanap-Mercado, MD's NPI is 1629020441 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
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.