Shirley Ann Riggs, M.D., F.a.c.p., P.A.
NPI 1336458512 · Hematology (Internal Medicine) Physician · Houston, TX
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shirley Ann Riggs, M.D., F.a.c.p., P.A. is a Hematology (Internal Medicine) Physician organization in Houston, TX (NPI 1336458512).
Provider details
- NPI number
- 1336458512
- Entity type
- Organization
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Shirley Riggs, Owner/Director(713) 529-4343
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
- 2010-10-05
- Last updated
- 2021-12-03
- Certified
- 2021-12-03
Frequently asked questions
- What is Shirley Ann Riggs, M.D., F.a.c.p., P.A.'s NPI number?
- Shirley Ann Riggs, M.D., F.a.c.p., P.A.'s National Provider Identifier (NPI) is 1336458512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Shirley Ann Riggs, M.D., F.a.c.p., P.A.?
- Shirley Ann Riggs, M.D., F.a.c.p., P.A. is classified in the NPPES registry as Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Shirley Ann Riggs, M.D., F.a.c.p., P.A. located?
- Shirley Ann Riggs, M.D., F.a.c.p., P.A.'s practice location on file with NPPES is Chi St. Luke'S Texas Heart Institute Clinic, Suite P115, Houston, TX 77030.
- What is Shirley Ann Riggs, M.D., F.a.c.p., P.A.'s phone number?
- The practice phone number listed in the NPPES registry for Shirley Ann Riggs, M.D., F.a.c.p., P.A. is (713) 529-4343.
- Does Shirley Ann Riggs, M.D., F.a.c.p., P.A. accept Medicare?
- Shirley Ann Riggs, M.D., F.a.c.p., P.A. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Shirley Ann Riggs, M.D., F.a.c.p., P.A.?
- The authorized official listed on Shirley Ann Riggs, M.D., F.a.c.p., P.A.'s NPPES record is Shirley Riggs, Owner/Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Shirley Ann Riggs, M.D., F.a.c.p., P.A.'s NPI active?
- Yes — Shirley Ann Riggs, M.D., F.a.c.p., P.A.'s NPI (1336458512) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.