NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gary G Singer, M.D.

Nephrology Physician in Saint Peters, MO · enumerated 2005 · practices at Boris Khariton MD PC.

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

National Provider Identifier

1366439283

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Gary G Singer
Credential M.D.
Sex Male
Practice address 70 Jungermann Cir Ste 302, Saint Peters, MO, 63376
Phone (636) 720-0310
Fax (636) 720-0311
Enumeration date Oct 5, 2005
Last updated in NPPES Aug 9, 2022

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 108436 (MO) 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
208058230 Medicaid MO -

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 1366439283 active?
Yes, as of the latest NPPES snapshot, NPI 1366439283 is active (record last updated 2022-08-09).
How do I verify Gary Singer's NPI record?
Cross-check NPI 1366439283 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

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-09.