Ignacio Alberto Portales Castillo, MD
Nephrology Physician · Saint Louis, MO
Ignacio Alberto Portales Castillo, MD is a nephrology physician with a practice address in Saint Louis, Missouri, and NPI 1740631183, issued on Jun 27, 2016. Check the license (Missouri 2021040899, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Ignacio Alberto Portales Castillo
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 2021040899 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
- Phone
- (314) 362-7603
- Enumerated
- Jun 27, 2016
- Record last updated
- Apr 17, 2025
- Fax
- (314) 747-5213
- Medicaid ID
- 200110124 MO
- Medicare enrollment
- Enrolled (PECOS I20220720001116); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 285 in Missouri → Look up another NPI →
Also registered at 1 Barnes Jewish Hospital Plz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ignacio Alberto Portales Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 2021040899Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average nephrology physician in 2024
463 Medicare Part D claims for 106 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Amlodipine Besylate75 claims
- Losartan Potassium38 claims
- Calcitriol37 claims
- Furosemide36 claims
- Carvedilol30 claims
- Lisinopril29 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $175.39
3 payments; by number, the most common kind was food and beverage; the largest payer was Calliditas Therapeutics US Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Washington UniversitySt Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ignacio Alberto Portales Castillo among 285 nephrology physician records in Missouri
Ignacio Alberto Portales Castillo, MD is one of 285 nephrology physician records with a practice address in Missouri. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 83% of them.
- NPI issued2016 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2016 · median 2000 among the 212 with a school on file
- Record last updated2025 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Missouri
There are 285 nephrology physician records in Missouri.
All 285 in Missouri → Every provider in Saint Louis → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Alejandro Alvarez, MDSaint Louis, MO 631101508846304
- Steven Cheng, MDSaint Louis, MO 631101154349611
- Daniel Coyne, MDSaint Louis, MO 631101427074749
- James Delmez, MDSaint Louis, MO 631101306862537
- Decha Enkvetchakul, MDSaint Louis, MO 631101205852514
- Andreas Herrlich, MDSaint Louis, MO 631101770567414
- Benjamin Humphreys, MDSaint Louis, MO 631101497798169
- Tingting Li, MDSaint Louis, MO 631101831154053
Common questions
What is Ignacio Alberto Portales Castillo, MD's NPI number?
Ignacio Alberto Portales Castillo, MD's National Provider Identifier (NPI) is 1740631183, issued on Jun 27, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Ignacio Alberto Portales Castillo, MD located?
The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 362-7603. Providers update this record themselves, so call before visiting.
How can I verify Ignacio Alberto Portales Castillo, MD's license?
NPPES lists Missouri license number 2021040899, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ignacio Alberto Portales Castillo, MD prescribe under Medicare Part D?
In 2024, Ignacio Alberto Portales Castillo, MD had 463 Medicare Part D claims for 106 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is Ignacio Alberto Portales Castillo, MD's MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.