Karen Shakita Riggins, M.D., PH.D.
Hematology & Oncology Physician · Houston, TX
Karen Shakita Riggins, M.D., PH.D. is a hematology & oncology physician with a practice address in Houston, Texas, and NPI 1629497953, issued on Apr 15, 2014. Check the license (Texas S6723, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Karen Shakita Riggins
- Credential
- M.D., PH.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- S6723 TX
40382 OK
Self-reported in NPPES; status is on the state search - Practice location
- 1504 Taub Loop, Houston, TX 77030
- Phone
- (713) 873-8890
- Enumerated
- Apr 15, 2014
- Record last updated
- Feb 11, 2025
- Medicare enrollment
- Enrolled (PECOS I20200710002321); accepts Medicare assignment
- Medical or professional school
- Morehouse School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 922 in Texas → Look up another NPI →
Also registered at 1504 Taub Loop
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Robert Abbitt, AGACNP-BCAcute Care Nurse Practitioner1588165765
- Waleed Abdellatif, MBBCH, MSC, MSHPEDiagnostic Radiology Physician1629737770
- Roba Abousaway, MDStudent in an Organized Health Care Education/Training Program1396689360
- Shiny AbrahamNurse Practitioner1669857124
- Christina Ackerman-Banks, MDMaternal & Fetal Medicine Physician1568840494
Verify Karen Shakita Riggins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S6723Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
38 Medicare Part D claims for 17 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $140.40
1 payment: food and beverage; the largest payer was Ipsen Biopharmaceuticals, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Baylor College OF MedicineHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Shakita Riggins among 922 hematology & oncology physician records in Texas
Karen Shakita Riggins, M.D., PH.D. is one of 922 hematology & oncology physician records with a practice address in Texas. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 76% of them.
- NPI issued2014 · 76% of these records are older, 20% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2014 · median 2004 among the 691 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Texas
There are 922 hematology & oncology physician records in Texas.
All 922 in Texas → Every provider in Houston → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ana AparicioHouston, TX 770301720033657
- Ahmed Eid, M.D.Houston, TX 770301649227406
- Susan Escudier, M.D.Houston, TX 770301831138221
- Lawrence Foote, M.D.Houston, TX 770301295777456
- Charles Geyer, MDHouston, TX 770301891795001
- Linus Ho, M.D., PH.D.Houston, TX 770301376525980
- Kevin Hude, M.D.Houston, TX 770301114996303
- Charles Manner, M. D.Houston, TX 770301760443782
Common questions
What is Karen Shakita Riggins, M.D., PH.D.'s NPI number?
Karen Shakita Riggins, M.D., PH.D.'s National Provider Identifier (NPI) is 1629497953, issued on Apr 15, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Karen Shakita Riggins, M.D., PH.D. located?
The NPPES record lists a practice address at 1504 Taub Loop, Houston, TX, 77030. Phone: (713) 873-8890. Providers update this record themselves, so call before visiting.
How can I verify Karen Shakita Riggins, M.D., PH.D.'s license?
NPPES lists Texas license number S6723, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Shakita Riggins, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Karen Shakita Riggins, M.D., PH.D. had 38 Medicare Part D claims for 17 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Karen Shakita Riggins, M.D., PH.D.'s MIPS final score?
The 2023 MIPS final score is 84.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.