Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Johanna Johnson, M.D.
Maternal & Fetal Medicine Physician in Annapolis, MD · enumerated 2006 · practices at Luminis Health Medical Group, LLC.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1619990744
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| K4800009 | Other | MD | BCBS |
| 211641301 | Medicaid | MD | - |
| 280835 | Other | PA | UNISON-YHCHC |
| 732204 | Other | MD | MEDICARE |
| 102246423 | Medicaid | PA | - |
| 20086849 | Other | PA | AMERIHEALTH MERCY - WMG |
| 20091825 | Other | PA | AMERIHEALTH MERCY-YH |
| 211641300 | Medicaid | MD | - |
| 400525 | Other | MD | CAREFIRST MD BCBS |
| 123846 | Other | PA | GEISINGER HEALTH PLAN |
| 20087483 | Other | PA | AMERIHEALTH MERCY-WMG |
| 261018 | Other | PA | UNISON-WMG |
| 30139634 | Other | PA | AMERIHEALTH MERCY-YHOBGYN |
| 701408 | Other | PA | HIGHMARK BLUE SHIELD |
| 019135 | Other | PA | JOHNS HOPKINS |
| 1578891 | Other | PA | GATEWAY-WMG |
| 50083119 | Other | PA | CAPITAL BLUE CROSS-WMG |
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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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-06.