Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Ana Isabel Stark, MD
Nephrology Physician in Festus, MO · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811188758
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Registry record
Entity type Individual (Type 1)
Name Mrs. Ana Isabel Stark
Credential MD
Sex Female
Practice address 1400 Us Highway 61 Ste 240a, Festus, MO, 63028
Phone (636) 937-3337
Fax (636) 931-7671
Enumeration date Aug 6, 2007
Last updated in NPPES Feb 3, 2026
Taxonomy & licenses
207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 2025034345 (MO) Primary
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 |
|---|---|---|---|
| 30005021370001 | Medicaid | KS | - |
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
What specialty is Ana Stark?
Ana Stark is registered in NPPES with the primary taxonomy of Nephrology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-03.