Mr. Robert H Seiwert, PHARM. D.

Mr. Robert H Seiwert is a Pharmacy provider (Pharmacy) practicing in Auburn, CA, registered in the NPPES registry with NPI 1649417692 since 2009. The credential PHARMD stands for Doctor of Pharmacy. Practices at D.L. Markham, DDS, Msd, Inc (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1649417692
Entity type	Individual (Type 1)
Name	Mr. Robert H Seiwert
Credential	PHARM. D.
Sex	Male
Practice address	Auburn, CA, 95603
Phone	5308235200
Enumeration date	2009-01-13
Last updated in NPPES	2009-01-13

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
333600000X	Pharmacy	Primary	PHY49228	CA

PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

Copy-ready billing details

Provider: Robert Seiwert, PHARM. D.
NPI: 1649417692
Taxonomy: 333600000X (Pharmacy)
Address: Auburn, CA, 95603

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1336276203	Luminita Markham	Individual	Dentist	Auburn, CA
1083743025	D.L. Markham, DDS, Msd, Inc	Organization	Dentist	Auburn, CA
1760113195	Chika Ugwu	Individual	Psychiatric/Mental Health Nurse Practitioner	Auburn, CA

Verify this record

Cross-check NPI 1649417692 against the authoritative CMS record: view Mr. Robert H Seiwert on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Robert Seiwert?

Robert Seiwert is registered in NPPES with the primary taxonomy of Pharmacy. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2009-01-13.