NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregg Stephen Hartman, M.D.

Anesthesiology Physician in Lebanon, NH · enumerated 2006.

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

National Provider Identifier

1225058316

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Gregg Stephen Hartman
Credential M.D.
Sex Male
Practice address 1 Medical Center Dr, Lebanon, NH, 03756
Phone (603) 650-5922
Enumeration date Jul 20, 2006
Last updated in NPPES Jul 28, 2011

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 10751 (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
0RE5406 Medicaid VT -
30200434 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

How do I verify Gregg Hartman's NPI record?
Cross-check NPI 1225058316 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1225058316 active?
Yes, as of the latest NPPES snapshot, NPI 1225058316 is active (record last updated 2011-07-28).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-28.