NPI registry status
Active
2026 NPPES data Pediatric Infectious Diseases Physician NPI 1023738796 MD
Verify on CMS → Sandra Castejon Ramirez, MD
Pediatric Infectious Diseases Physician in Memphis, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,101 in Pediatric Infectious Diseases 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
Sandra Castejon Ramirez, MD is a Pediatric Infectious Diseases Physician in Memphis, Tennessee, listed in the federal CMS National Provider Identifier registry.
- #174
- Pediatric Infectious Diseases Physician rank among Tennessee 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 Sandra Castejon Ramirez, MD
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 1023738796), first enumerated 09/01/2022.
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
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- 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 Castejon Ramirez with other Pediatric Infectious Diseases Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Tennessee
- Ghussai Abd El Gadir Chattanooga, TN
- Dr. Elisabeth Adderson, MD Memphis, TN
- Dr. Sandra Arnold, MD Memphis, TN
- Rawan Budair Memphis, TN
- Dr. Miguela Caniza, MD Memphis, TN
- Dr. Maria Carrillo-Marquez, M.D Memphis, TN
Other specialties in Memphis: Student in an Organized Health Care Education/Training Program (1,362) · Pharmacist (980) · Family Nurse Practitioner (636) · Mental Health Counselor (416)
CMS NPPES provider registry desk
NPI 1023738796 · Pediatric Infectious Diseases Physician
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1023738796
- ENUM-RECENT 2022
- TAX-NARROW 1,101
- RX-NONE No Part D
- BOOK-THIN 39 in Tennessee
- PHOTO-ENUM Valentina Gutierrez,… · 2022
◑
Board-eligible specialty (heuristic, not verified)
Sandra Castejon Ramirez, 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 Sandra Castejon Ramirez, MD?
Quality data not reportedPrimary specialty
Pediatric Infectious Diseases Physician
Specialty distribution in Tennessee
How Pediatric Infectious Diseases Physician compares to other specialties among Tennessee 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 Pediatric Infectious Diseases 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 | 1023738796 |
|---|---|
| Specialty | Pediatric Infectious Diseases Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 09/01/2022 |
More Pediatric Infectious Diseases Physician in TN →
All providers in Tennessee →
Compare specialties →
Pediatric Infectious Diseases Physician Overview
How Sandra Castejon Ramirez, MD fits within the Pediatric Infectious Diseases Physician landscape nationally.
1,101
Pediatric Infectious Diseases Physician Providers in US
50
States with Pediatric Infectious Diseases Physician
306
Avg Claims per Provider
Nationwide Pediatric Infectious Diseases Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Castejon Ramirez, both outside Tennessee so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pediatric Infectious Diseases Physician Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Castejon Ramirez.
One of 39 Pediatric Infectious Diseases Physician providers enrolled in Tennessee, 11 are shown on this page.
Cara Charnogursky
Nashville, TN
Dr. Patricia Chesney
MD
Memphis, TN
Dr. Shahana Choudhury
MD
Clarksville, TN
Dr. James Crowe
MD
Nashville, TN
Dr. Mark Denison
MD
Nashville, TN
Compare Pediatric Infectious Diseases Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Sandra Castejon Ramirez, MD's specialty? ▼
Sandra Castejon Ramirez, MD specializes in Pediatric Infectious Diseases Physician and practices in Memphis, Tennessee. Credentials: MD.
Where is Sandra Castejon Ramirez, MD located? ▼
Sandra Castejon Ramirez, MD is located at 262 DANNY THOMAS PL, Memphis, TN, 38105. Phone: (901) 595-3300.
What is Sandra Castejon Ramirez, MD's NPI number? ▼
Sandra Castejon Ramirez, MD's National Provider Identifier (NPI) is 1023738796, issued on 09/01/2022.
How many Pediatric Infectious Diseases Physician providers are there in the US? ▼
There are 1,101 Pediatric Infectious Diseases Physician providers across 50 states in the US. The average Pediatric Infectious Diseases Physician provider writes 306 Medicare Part D claims per year.
Does Sandra Castejon Ramirez, MD accept Medicare? ▼
Sandra Castejon Ramirez, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sandra Castejon Ramirez, MD's credentials? ▼
Sandra Castejon Ramirez, MD's NPI is 1023738796 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 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.