Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Charles D Blackwell, PHARM. D.

Pharmacist in Austin, TX · enumerated 2007 · practices at Oncology Pharmacy Services, Inc.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1245457373

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles D Blackwell

Credential PHARM. D.

Sex Male

Practice address Austin, TX, 78731

Phone (512) 427-9448

Fax (512) 302-3928

Enumeration date Apr 19, 2007

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 38519 (TX) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1245457373 active?

Yes, as of the latest NPPES snapshot, NPI 1245457373 is active (record last updated 2007-07-08).

How do I verify Charles Blackwell's NPI record?

Cross-check NPI 1245457373 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Kimberly Brown Surgical Oncology Physician · Austin, TX NPI 1326019571 Carl Nuesch Radiation Oncology Physician · Austin, TX NPI 1659318095 Michael Teneriello Gynecologic Oncology Physician · Austin, TX NPI 1801834809 John Sandbach Hematology & Oncology Physician · Austin, TX NPI 1376585505 Michael Kasper Hematology & Oncology Physician · Austin, TX NPI 1669414652 John Hoverman Hematology & Oncology Physician · Austin, TX NPI 1508808494 Lisa Sailer Nurse Practitioner · Austin, TX NPI 1730122284 Oncology Pharmacy Services, Inc Specialty Pharmacy · Austin, TX NPI 1649216516

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.