Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John L Flowers, M.D.
Surgery Physician in Baltimore, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1891735965
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Registry record
Entity type Individual (Type 1)
Name Dr. John L Flowers
Credential M.D.
Sex Male
Practice address 6535 N Charles St, Ste 125, Baltimore, MD, 21204
Phone (410) 821-6260
Fax (410) 296-6936
Enumeration date Jun 7, 2006
Last updated in NPPES Dec 17, 2009
Taxonomy & licenses
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 |
|---|---|---|---|
| 093601400 | Medicaid | MD | - |
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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is John Flowers?
John Flowers is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Ann Fraker Specialist · Baltimore, MD NPI 1407851827 Francis Lee Endocrinology, Diabetes & Metabolism Physician · Baltimore, MD NPI 1861497828 George Apostolides Specialist · Towson, MD NPI 1972570158 David Goldstein Urology Physician · Baltimore, MD NPI 1740243906 Ronald Tutrone Urology Physician · Baltimore, MD NPI 1265495204 Karen Boyle Urology Physician · Towson, MD NPI 1649237066 Irene Rovira Clinical Psychologist · Baltimore, MD NPI 1982658068 Joel Turner Surgery Physician · Baltimore, MD NPI 1225070386
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-17.