Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen Philip Karp, DO

Pain Medicine (Anesthesiology) Physician in Scottsdale, AZ · enumerated 2019.

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

National Provider Identifier

1881155877

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Registry record

Entity type Individual (Type 1)

Name Stephen Philip Karp

Credential DO

Sex Male

Practice address 9500 E Ironwood Square Dr Ste 125, Scottsdale, AZ, 85258

Phone (928) 852-2540

Enumeration date Mar 31, 2019

Last updated in NPPES May 10, 2024

Taxonomy & licenses

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License 285433 (MA) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License 011048 (AZ) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
285433	Other	MA	MASSACHUSETTS LICENCE
00002136874	Medicaid	MA	-
011048	Other	MA	ARIZONA BOARD OF OSTEOPATHIC EXAMINERS IN MEDICINE AND SURGERY

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.

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Frequently asked questions

Is NPI 1881155877 active?

Yes, as of the latest NPPES snapshot, NPI 1881155877 is active (record last updated 2024-05-10).

How do I verify Stephen Karp's NPI record?

Cross-check NPI 1881155877 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-10.