Marshall Sack, M.D.
NPI 1902160336 · Rheumatology Physician · Houston, TX
Marshall Sack, M.D. is a Rheumatology Physician provider in Houston, TX (NPI 1902160336).
Provider details
- NPI number
- 1902160336
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D8607 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-29
- Last updated
- 2012-07-02
Frequently asked questions
- What is Marshall Sack's NPI number?
- Marshall Sack's National Provider Identifier (NPI) is 1902160336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Sack's specialty?
- Marshall Sack is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Sack located?
- Marshall Sack's practice location on file with NPPES is 3100 Timmons Ln, Houston, TX 77027-5926.
- What is Marshall Sack's phone number?
- The practice phone number listed in the NPPES registry for Marshall Sack is (713) 993-0605.
- Is Marshall Sack's NPI active?
- Yes — Marshall Sack's NPI (1902160336) is active in the NPPES registry as of the last update on 2012-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.