Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ronald Mark Berger, O.D.
Optometrist in Ellicott City, MD · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1063448983
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Registry record
Entity type Individual (Type 1)
Name Dr. Ronald Mark Berger
Credential O.D.
Sex Male
Practice address 5012 Dorsey Hall Dr, Suite 105, Ellicott City, MD, 21042
Phone (410) 730-8878
Fax (410) 997-8272
Enumeration date Jun 23, 2006
Last updated in NPPES Mar 9, 2010
Taxonomy & licenses
152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License TA0679 (MD) Secondary
152WS0006X Sports Vision Optometrist Eye and Vision Services Providers · License TA0679 (MD) Secondary
152WV0400X Vision Therapy Optometrist Eye and Vision Services Providers · License TA0679 (MD) Secondary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 269818800 | 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
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.
What specialty is Ronald Berger?
Ronald Berger is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-09.