Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Emma Giacinta Diiorio, M.D.

Rheumatology Physician in Rockville, MD · enumerated 2005 · practices at Maragh Dermatology II LLC.

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

National Provider Identifier

1528067808

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Registry record

Entity type Individual (Type 1)

Name Dr. Emma Giacinta Diiorio

Credential M.D.

Sex Female

Practice address 14995 Shady Grove Rd, Suite 250, Rockville, MD, 20850

Phone (301) 942-7600

Fax (301) 942-3132

Enumeration date Jul 19, 2005

Last updated in NPPES Jul 15, 2019

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License D0044503 (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
317769	Other	-	MAMSI
057951300	Medicaid	MD	-
30356	Other	-	PRIORITY PARTNERS
0003	Other	DC	CAREFIRST OF DC
2429357	Other	-	UNITED HEALTHCARE
89370701	Other	MD	CAREFIRST OF MARYLAND
89404	Other	-	FIRST HEALTH
317796	Other	-	ALLIANCE
0004520966	Other	-	AETNA

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.

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Frequently asked questions

How do I verify Emma Diiorio's NPI record?

Cross-check NPI 1528067808 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1528067808 active?

Yes, as of the latest NPPES snapshot, NPI 1528067808 is active (record last updated 2019-07-15).

Other providers at this practice address

Browse all →

Myria Petrou Diagnostic Radiology Physician · Rockville, MD NPI 1245351733 Maragh Dermatology II LLC Dermatology Physician · Rockville, MD NPI 1083026694 Blake Leibowitz Physician Assistant · Rockville, MD NPI 1578012118 Joshua Eppinger Occupational Therapist · Rockville, MD NPI 1659890978

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-15.