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Gretchen Zimmerman, M.D.
NPI 1609861020 · Surgery Physician · Houston, TX
Gretchen Zimmerman, M.D. is a Surgery Physician provider in Houston, TX (NPI 1609861020).
Provider details
- NPI number
- 1609861020
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G2253 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
6624 Fannin St
Suite 2180
Houston, TX 77030-2341
Phone: (713) 797-9500
Fax: (713) 797-9511
Street-level locationGet directions
Mailing address
6624 Fannin St
Houston, TX 77030-2341
Registry dates
- Enumerated
- 2005-09-12
- Last updated
- 2011-10-12
Frequently asked questions
- What is Gretchen Zimmerman's NPI number?
- Gretchen Zimmerman's National Provider Identifier (NPI) is 1609861020, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Zimmerman's specialty?
- Gretchen Zimmerman is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gretchen Zimmerman located?
- Gretchen Zimmerman's practice location on file with NPPES is 6624 Fannin St, Houston, TX 77030-2341.
- What is Gretchen Zimmerman's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Zimmerman is (713) 797-9500.
- Is Gretchen Zimmerman's NPI active?
- Yes — Gretchen Zimmerman's NPI (1609861020) is active in the NPPES registry as of the last update on 2011-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.