Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Pauline Hsu, M.D.

Pediatrics Physician in Frederick, MD · enumerated 2006.

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

National Provider Identifier

1134152416

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Registry record

Entity type Individual (Type 1)

Name Dr. Pauline Hsu

Credential M.D.

Sex Female

Practice address 110 Baughmans Ln, Second Floor, Frederick, MD, 21702

Phone (304) 846-0300

Fax (301) 663-6048

Enumeration date Jul 9, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License D0053595 (MD) 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
700274	Other	-	NCPPO
9970	Other	-	KAISER
0068	Other	-	CAREFIRST DC
284418	Other	-	MAMSI
011734	Other	-	JOHNS HOPKINS HEALTHCARE
68592204	Other	-	CAREFIRST MARYLAND
113574	Other	-	COVENTRY
1881242	Other	-	UNITED HEALTHCARE
2550964	Other	-	AETNA HMO
7816465002	Other	-	CIGNA
53303	Medicaid	MD	-
5359733	Other	-	AETNA PPO

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 Pauline Hsu?

Pauline Hsu is registered in NPPES with the primary taxonomy of Pediatrics 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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.