Physician Profile
Hernan Gerardo Marcos, MD
Unclaimed ProfileAbout Dr. Marcos
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Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (312) 864-6000
- Email not available
Practice Locations
1901 W HARRISON ST
Chicago, IL 60612
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 8 related providers in 1 group
Common questions
What is Dr. Marcos's specialty?
Dr. Marcos is an internist in Chicago, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Internal Medicine”.
NPI registry
Where can I find Dr. Marcos?
Dr. Marcos is listed at 1901 W HARRISON ST, Chicago, IL 60612. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Marcos?
The number on file is (312) 864-6000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Marcos's NPI number?
Dr. Marcos's National Provider Identifier is 1134746142. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has Dr. Marcos been practicing?
Dr. Marcos has 6+ years experience. Registered with an NPI since 2020. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Has Dr. Marcos confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marcos. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.