Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ralph A Lemcke, MD
Dermatology Physician in Tucson, AZ · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912007683
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Ralph A Lemcke
Credential MD
Sex Male
Practice address 6542 E Carondelet Dr, Tucson, AZ, 85710
Phone (520) 296-6204
Fax (520) 296-3463
Enumeration date Sep 23, 2006
Last updated in NPPES Oct 22, 2007
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 |
|---|---|---|---|
| BCBSAZ | Other | AZ | AZ0399330 |
| 530718 | Medicaid | AZ | - |
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 Ralph Lemcke?
Ralph Lemcke is registered in NPPES with the primary taxonomy of Dermatology 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 → David Flieger Dermatology Physician · Tucson, AZ NPI 1134229818 David N. Flieger, MD, PC Dermatology Physician · Tucson, AZ NPI 1578617262 Ralph A. Lemcke, MD, PC Dermatology Physician · Tucson, AZ NPI 1851445332 California Dermatology Institute PC Non-Pharmacy Dispensing Site · Tucson, AZ NPI 1033065693
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-22.