Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. David Hartig, M.D.
Family Medicine Physician in Hunt Valley, MD · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1093797995
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 32364002 | Other | MD | CARE FIRST |
| 521212174 | Other | MD | AMERIGROUP |
| 521212174 | Other | MD | ALLSTATE |
| 25202 | Other | MD | EMPLOYER HEALTH |
| 32364002 | Other | MD | BLUE CROSS AND BLUE SHIEL |
| 36534 | Other | MD | HEALTH PARTNER |
| 43146 | Other | MD | HEALTH ASSURANCE |
| 521212174 | Other | MD | AMERIHEALTH |
| 521212174 | Other | MD | AFTRA HEALTH |
| 521212174 | Other | MD | ACE |
| 521212174 | Other | MD | AMERICAN INTERNATIONAL |
| 823222 | Other | MD | ALLIANCE |
| 521212174 | Other | MD | AAA |
| 521212174 | Other | MD | A-G ADMINISTRATORS |
| 0783346 | Other | MD | AETNA |
| 521212174 | Other | MD | ACCORDIA |
| 323222 | Other | MD | OPTIUM CHOICE |
| 823222 | Other | MD | MAMSI |
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.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-15.