Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marvin Siy Sih, MD
Neurology Physician in Ravenna, OH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1326238304
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Registry record
Entity type Individual (Type 1)
Name Marvin Siy Sih
Credential MD
Sex Male
Practice address 6847 N Chestnut St Ste 325, Ravenna, OH, 44266
Phone (330) 297-2401
Fax (330) 297-4485
Enumeration date Jul 26, 2007
Last updated in NPPES Dec 16, 2020
Taxonomy & licenses
2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 04-36211 (KS) Secondary
2084S0012X Sleep Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 04-36211 (KS) 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 |
|---|---|---|---|
| H651590 | Other | OH | MEDICARE |
| 003719271 | Other | KS | CMS - MEDICARE |
| 0307547 | Medicaid | OH | - |
| 201074230A | Medicaid | KS | - |
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
How do I verify Marvin Sih's NPI record?
Cross-check NPI 1326238304 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1326238304 active?
Yes, as of the latest NPPES snapshot, NPI 1326238304 is active (record last updated 2020-12-16).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-16.