Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John M Riddell, MD

Anesthesiology Physician in Concord, NH · enumerated 2006.

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

National Provider Identifier

1174593073

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Registry record

Entity type Individual (Type 1)

Name Dr. John M Riddell

Credential MD

Sex Male

Practice address 250 Pleasant St., Concord, NH, 03301

Phone (603) 789-9103

Fax (603) 227-7832

Enumeration date Jan 24, 2006

Last updated in NPPES Dec 31, 2023

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 228118 (NY) Secondary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 14640 (NH) 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
1016847	Medicaid	VT	-
02394943	Medicaid	NY	-
30209066	Medicaid	NH	-

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 1174593073 active?

Yes, as of the latest NPPES snapshot, NPI 1174593073 is active (record last updated 2023-12-31).

How do I verify John Riddell's NPI record?

Cross-check NPI 1174593073 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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Jay Bryan Bannister Family Medicine Physician · Concord, NH NPI 1619970746 Mary Danca Obstetrics & Gynecology Physician · Concord, NH NPI 1770586497 Molly Rossignol Addiction Medicine (Family Medicine) Physician · Concord, NH NPI 1780687145 Kelley Shultz Pediatrics Physician · Concord, NH NPI 1548262504 Paul Matzkin Hospitalist Physician · Concord, NH NPI 1427053362 Daniel Eubank Family Medicine Physician · Concord, NH NPI 1841295797 Christos Giotopoulos Dentist · Concord, NH NPI 1487659447 Suzanne Boulter Pediatrics Physician · Concord, NH NPI 1992700967

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-31.