Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Matthew K Folstein, MD
Surgery Physician in Berlin, MD · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952536674
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Registry record
Entity type Individual (Type 1)
Name Matthew K Folstein
Credential MD
Sex Male
Practice address 10231 Old Ocean City Blvd Ste 207, Berlin, MD, 21811
Phone (410) 641-9568
Fax (410) 641-1006
Enumeration date May 26, 2009
Last updated in NPPES Aug 5, 2026
Taxonomy & licenses
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 |
|---|---|---|---|
| 201308490 | Medicaid | IN | - |
| 7101141530 | Medicaid | KY | - |
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 Matthew Folstein?
Matthew Folstein is registered in NPPES with the primary taxonomy of Surgery 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 →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-05.