Christian Castillo, MD
Internal Medicine Physician · Spartanburg, SC
Christian Castillo, MD is an internal medicine physician with a practice address in Spartanburg, South Carolina, and NPI 1316000979, issued on Dec 18, 2006. Check the license (South Carolina 37392, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Christian Castillo
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 37392 SC
A125486 CA
MT186475 PA
Self-reported in NPPES; status is on the state search - Practice location
- 151 Harold Fleming CT, Spartanburg, SC 29303
- Phone
- (864) 573-6320
- Enumerated
- Dec 18, 2006
- Entity
- Type 1 · individual
Also registered at 151 Harold Fleming CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Supinder Channa, N.P.Pulmonary Disease Physician1427509611
- Elizabeth Everette, NPNurse Practitioner1407357478
- Brandi Howard, APRNPrimary Care Nurse Practitioner1265009591
- Rupa Koothirezhi, MDFamily Medicine Physician1699207944
- Christine Kryger, NPNurse Practitioner1184920308
- Catherine Marshall, APRNCommunity Health Worker1386893121
Verify Christian Castillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 37392Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
443 Medicare Part D claims for 109 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 41 claims were for opioids.
Most prescribed
- Trazodone Hcl70 claims
- Belsomra57 claims
- Methadone Hcl41 claims
- Modafinil36 claims
- Clonazepam30 claims
- Gabapentin29 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.
One hospital or facility affiliation
- Permanente Medical Group IncSanta Rosa, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
118 internal medicine physician records list a Spartanburg practice address
They are 118 of the 3,328 NPPES records with a Spartanburg practice address, and 2,276 internal medicine physician records in South Carolina.
All 118 in Spartanburg → All 2,276 in South Carolina → Every provider in Spartanburg →
Other internal medicine physician records in South Carolina
- John Abbott, M.D.Sumter, SC1093830762
- Murad Abdelsalam, MDRock Hill, SC1013229756
- Mohammed Abdulfatah, MDOrangeburg, SC1285167023
- Amjad Abdulrahman, MDIrmo, SC1194718841
- Elizabeth Abell, MDSpartanburg, SC1083623805
- Alvin Abinsay, M.D.Marion, SC1689608002
- Izabela Abissi, DOCharleston, SC1376387803
- Tinu Abraham, MDGreenwood, SC1194354399
- Natallia Abramovich, MDSeneca, SC1568647949
- Mohammad Abudalou, MDColumbia, SC1164084653
Common questions
What is Christian Castillo, MD's NPI number?
Christian Castillo, MD's National Provider Identifier (NPI) is 1316000979, issued on Dec 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Christian Castillo, MD located?
The NPPES record lists a practice address at 151 Harold Fleming CT, Spartanburg, SC, 29303. Phone: (864) 573-6320. Providers update this record themselves, so call before visiting.
How can I verify Christian Castillo, MD's license?
NPPES lists South Carolina license number 37392, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christian Castillo, MD prescribe under Medicare Part D?
In 2024, Christian Castillo, MD had 443 Medicare Part D claims for 109 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
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 Aug 27, 2026.