Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark R Stone, M.D.

Hematology (Internal Medicine) Physician in Newberg, OR · enumerated 2006.

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

National Provider Identifier

1619031838

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark R Stone

Credential M.D.

Sex Male

Practice address 1000 N Providence Dr Ste 310, Newberg, OR, 97132

Phone (503) 537-6040

Enumeration date Dec 21, 2006

Last updated in NPPES May 6, 2024

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License MD24415 (OR) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License MD24415 (OR) Secondary

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD24415 (OR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
227287	Medicaid	OR	-

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

How do I verify Mark Stone's NPI record?

Cross-check NPI 1619031838 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1619031838 active?

Yes, as of the latest NPPES snapshot, NPI 1619031838 is active (record last updated 2024-05-06).

Other providers at this practice address

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Christine Johnson Medical Oncology Physician · Newberg, OR NPI 1508070046 Kirsten Johansson Family Nurse Practitioner · Newberg, OR NPI 1780025890 Laurel Tor Family Nurse Practitioner · Newberg, OR NPI 1649636648 Kayleigh Flint Oncology Pharmacist · Newberg, OR NPI 1700742921 Darlene Corral Clinical Social Worker · Newberg, OR NPI 1285567834

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-06.