Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Helen Chang-Deguzman, M.D.
Nephrology Physician in Elkton, MD · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1710989926
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Registry record
Entity type Individual (Type 1)
Name Helen Chang-Deguzman
Credential M.D.
Sex Female
Practice address 137 W High St, Suite 1a, Elkton, MD, 21921
Phone (410) 620-9200
Fax (410) 620-9207
Enumeration date Jun 1, 2005
Last updated in NPPES Jun 17, 2021
Taxonomy & licenses
207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License C1-0006336 (DE) Secondary
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 |
|---|---|---|---|
| 0001183101 | Medicaid | DE | - |
| 699445800 | Medicaid | MD | - |
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 Helen Chang-Deguzman?
Helen Chang-Deguzman 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 → Martin Gavin Nephrology Physician · Elkton, MD NPI 1609862150 Aprile Harris Nurse Practitioner · Elkton, MD NPI 1831133701 Stephanie Bedard Physical Therapist · Elkton, MD NPI 1154432268 Roger Wu Gastroenterology Physician · Elkton, MD NPI 1801088596 Collette Mehring Nephrology Physician · Elkton, MD NPI 1326232208 Usman Moghal Neurology Physician · Elkton, MD NPI 1417269754 Kristine Henry Nutritionist · Elkton, MD NPI 1649565482 Jennifer Speir Nutritionist · Elkton, MD NPI 1447545280
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-17.