Sumiko Armstead, MD
Nephrology Physician · Cypress, TX
Sumiko Armstead, MD is a nephrology physician with a practice address in Cypress, Texas, and NPI 1528267812, issued on Jul 16, 2007. Check the license (Texas N4916, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Sumiko Armstead
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- N4916 TX
Self-reported in NPPES; status is on the state search - Practice location
- 27700 Northwest Fwy Ste 330, Cypress, TX 77433
- Phone
- (281) 908-8047
- Enumerated
- Jul 16, 2007
- Record last updated
- Mar 19, 2026
- Fax
- (281) 456-3981
- Medicaid ID
- 350958002 TX
- Medicare enrollment
- Enrolled (PECOS I20130430000217); may accept Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 2007
- Entity
- Type 1 · individual
Also registered at 27700 Northwest Fwy Ste 330
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zohair Hasan, MDInterventional Cardiology Physician1942644703
Verify Sumiko Armstead in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N4916Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average nephrology physician in 2024
826 Medicare Part D claims for 177 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide56 claims
- Amlodipine Besylate46 claims
- Nifedipine Er44 claims
- Carvedilol35 claims
- Sevelamer Carbonate35 claims
- Velphoro28 claims
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.
Bills Medicare through one group practice
- Memorial Hermann Medical GroupHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nephrology Physician providers in Texas
There are 1,159 nephrology physician records in Texas.
Other nephrology physician records in Texas
- Bernardino Abaya, M.D.Houston, TX1740262013
- Aisha Abbasi, MDConroe, TX1942837570
- Abdul Abdellatif, M.D.Webster, TX1164560595
- Dina Abdelwahab, MDDallas, TX1801050208
- Mohammed Abdulaziz, MDLaredo, TX1881009215
- Muhammad Abdullah, MDSan Antonio, TX1154614832
- Nashila Abdulrahim, DODallas, TX1659665180
- Mai Abouelsaad, M.D.Houston, TX1790168086
- Fadi Abouzahr, MDSan Antonio, TX1982695896
- Koshy Abraham, MDFort Worth, TX1780658559
Common questions
What is Sumiko Armstead, MD's NPI number?
Sumiko Armstead, MD's National Provider Identifier (NPI) is 1528267812, issued on Jul 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sumiko Armstead, MD located?
The NPPES record lists a practice address at 27700 Northwest Fwy Ste 330, Cypress, TX, 77433. Phone: (281) 908-8047. Providers update this record themselves, so call before visiting.
How can I verify Sumiko Armstead, MD's license?
NPPES lists Texas license number N4916, 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 Sumiko Armstead, MD prescribe under Medicare Part D?
In 2024, Sumiko Armstead, MD had 826 Medicare Part D claims for 177 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
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.