Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark S Choh, M.D.
Surgery Physician in Berwyn, IL · enumerated 2008.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023283611
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark S Choh
Credential M.D.
Sex Male
Practice address 3245 Grove Ave, #202, Berwyn, IL, 60402
Phone (708) 484-0621
Fax (708) 484-0250
Enumeration date Apr 24, 2008
Last updated in NPPES Mar 26, 2012
Taxonomy & licenses
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License IL 036118355 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
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 Mark Choh?
Mark Choh 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.
Other providers at this practice address
Browse all → Mercado Foot and Ankle Clinics South Podiatrist · Berwyn, IL NPI 1790783736 Jeffrey Zawacki Surgery Physician · Berwyn, IL NPI 1790774750 Mary Leonard Surgery Physician · Berwyn, IL NPI 1063402048 Monica Umlauf Clinical Social Worker · Berwyn, IL NPI 1144201443 David Vanthiel Gastroenterology Physician · Berwyn, IL NPI 1447367479 Sharad Khandelwal Pulmonary Disease Physician · Berwyn, IL NPI 1124130240 Robin Favor Surgery Physician · Berwyn, IL NPI 1912153909 S & S Diagnostic Services, Inc Physiological Laboratory · Berwyn, IL NPI 1770883779
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-26.