OrganizationActive
Gretchen M Zimmerman, MD, PA
NPI 1821202482 · Surgery Physician · Houston, TX
Gretchen M Zimmerman, MD, PA is a Surgery Physician organization in Houston, TX (NPI 1821202482).
Provider details
- NPI number
- 1821202482
- Entity type
- Organization
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Gretchen Zimmerman, Owner(713) 797-9500
- License
- G2253 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
6550 Fannin St
Suite 2307
Houston, TX 77030-2717
Phone: (713) 797-9500
Fax: (713) 797-9511
Street-level locationGet directions
Mailing address
6550 Fannin St
Houston, TX 77030-2717
Registry dates
- Enumerated
- 2007-05-10
- Last updated
- 2014-03-31
Frequently asked questions
- What is Gretchen M Zimmerman, MD, PA's NPI number?
- Gretchen M Zimmerman, MD, PA's National Provider Identifier (NPI) is 1821202482, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gretchen M Zimmerman, MD, PA?
- Gretchen M Zimmerman, MD, PA is classified in the NPPES registry as Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Gretchen M Zimmerman, MD, PA located?
- Gretchen M Zimmerman, MD, PA's practice location on file with NPPES is 6550 Fannin St, Houston, TX 77030-2717.
- What is Gretchen M Zimmerman, MD, PA's phone number?
- The practice phone number listed in the NPPES registry for Gretchen M Zimmerman, MD, PA is (713) 797-9500.
- Who is the authorized official for Gretchen M Zimmerman, MD, PA?
- The authorized official listed on Gretchen M Zimmerman, MD, PA's NPPES record is Gretchen Zimmerman, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gretchen M Zimmerman, MD, PA's NPI active?
- Yes — Gretchen M Zimmerman, MD, PA's NPI (1821202482) is active in the NPPES registry as of the last update on 2014-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.