Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. A Nalyn Russo Marcus, DC
Chiropractor in Bethlehem, PA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669695383
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Registry record
Entity type Individual (Type 1)
Name Dr. A Nalyn Russo Marcus
Credential DC
Sex Female
Practice address 820 Eaton Ave, Bethlehem, PA, 18018
Phone (610) 974-8900
Fax (610) 974-9344
Enumeration date Apr 11, 2007
Last updated in NPPES Jul 15, 2008
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 02828900 | Other | PA | CAPITAL BC |
| 0473510000 | Other | - | INDEPENDENT BS |
| 642920 | Other | PA | BLUE SHIELD |
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 A Nalyn Marcus?
A Nalyn Marcus is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-15.