Physician Profile
Unclaimed ProfileAbout SACK
Marshall Sack, M.D. is a healthcare provider in Houston, TX specializing in internal medicine. Marshall is also listed as specializing in rheumatology.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (713) 993-0605
- Email not available
Practice Locations
3100 TIMMONS LN SUITE 250
Houston, TX 77027
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
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.
Other internists in Houston 8
Same specialty, same city.
Common questions
What does Dr. Sack specialize in?
Dr. Sack is an internist in Houston, TX. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Internal Medicine”.
NPI registry
Where is Dr. Sack located?
Dr. Sack is listed at 3100 TIMMONS LN SUITE 250, Houston, TX 77027. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Sack's phone number?
The number on file is (713) 993-0605. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Sack's NPI number?
Dr. Sack's National Provider Identifier is 1902160336. 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. Sack been practicing?
Dr. Sack has 14+ years experience. Registered with an NPI since 2012. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
Has Dr. Sack confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Sack. 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.