Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Robert Carl Clark, M.D.
Psychiatry Physician in Denver, CO · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861492035
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Registry record
Entity type Individual (Type 1)
Name Robert Carl Clark
Credential M.D.
Sex Male
Practice address 1634 Downing St, Denver, CO, 80218
Phone (303) 504-1800
Fax (303) 894-8107
Enumeration date Jul 28, 2005
Last updated in NPPES Jul 8, 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 |
|---|---|---|---|
| 01289040 | Medicaid | CO | - |
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 Robert Clark?
Robert Clark is registered in NPPES with the primary taxonomy of Psychiatry 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 → Emily Mccort Psychiatry Physician · Denver, CO NPI 1538169859 Kelley Bundy Case Manager/Care Coordinator · Denver, CO NPI 1831264480 Brittany Barnes Case Manager/Care Coordinator · Denver, CO NPI 1356409007 Gale Garcia Psychiatric/Mental Health Registered Nurse · Denver, CO NPI 1891839247 Jessica Nylen Case Manager/Care Coordinator · Denver, CO NPI 1124162425 Craig Casner Mental Health Counselor · Denver, CO NPI 1144365842 Molly Beers Case Manager/Care Coordinator · Denver, CO NPI 1356486823 Shanna Rivera Licensed Practical Nurse · Denver, CO NPI 1518092188
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.