Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marla Janelle Greiner, M.D.

Urology Physician in Urbandale, IA · enumerated 2013 · practices at The Iowa Clinic, PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811336068

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Registry record

Entity type Individual (Type 1)

Name Dr. Marla Janelle Greiner

Credential M.D.

Sex Female

Practice address 4323 Nw Urbandale Dr, Urbandale, IA, 50322

Phone (515) 875-9800

Fax (515) 875-9804

Enumeration date Jun 20, 2013

Last updated in NPPES May 27, 2026

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License TRN19115 (FL) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 82089 (MN) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License MD-52101 (IA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Marla Greiner?

Marla Greiner is registered in NPPES with the primary taxonomy of Urology 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 →

Steven Rosenberg Urology Physician · Urbandale, IA NPI 1861488785 The Iowa Clinic, PC Durable Medical Equipment & Medical Supplies · Urbandale, IA NPI 1649260431 Carl Meyer Urology Physician · Urbandale, IA NPI 1689887416 Amy Lynch Physical Medicine & Rehabilitation Physician · Urbandale, IA NPI 1174797278 Amanda Johnson Family Medicine Physician · Urbandale, IA NPI 1861711459 Kevin Cwach Urology Physician · Urbandale, IA NPI 1386037638 Katelyn Finley Physician Assistant · Urbandale, IA NPI 1922597384 Ally Flesher Nurse Practitioner · Urbandale, IA NPI 1891380978

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-27.