Dr. Sumiko Iesha Armstead, MD
- Medicare services, 2024
- 577
- Medicare patients, 2024
- 173
- Part D claims, 2024
- 826
- Publications
- 2
- Hospital affiliations
- 5
- Practice address
- 411 Park Grove Dr, Katy, TX 77450
- Practice phone
- Call (281) 758-1380
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cypress Fairfield Dialysis
Katy, Texas
Find Dr. Armstead's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Sumiko Iesha Armstead is a nephrologist in Katy, Texas
Dr. Armstead practices at Cypress Fairfield Dialysis in Katy, Texas.
Dr. Armstead's NPI, 1528267812, was assigned on July 16, 2007. Dr. Armstead graduated from Baylor College Of Medicine in 2007. Dr. Armstead holds Texas license N4916.
- NPI
- 1528267812NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961649454
- NPI enumeration date
- July 16, 2007
- NPI status
- Active
- Practice phone
- (281) 758-1380
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Sumiko Iesha Armstead practices at Cypress Fairfield Dialysis in Katy, Texas
Dr. Armstead's primary practice is Cypress Fairfield Dialysis, at 411 Park Grove Dr, Katy, TX 77450 in Harris County. The practice phone is (281) 758-1380.
- Cypress Fairfield Dialysis411 Park Grove Dr, Katy, TX 77450 · Harris CountyPhone(281) 758-1380
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Sumiko Iesha Armstead is affiliated with 13 sites of care and 2 medical groups
Dr. Armstead's primary practice is Cypress Fairfield Dialysis in Katy, Texas. Dr. Armstead is also affiliated with Memorial Hermann Greater Heights Hospital. The medical group on file is Memorial Hermann Medical Group. Dmand AI also links Dr. Armstead to 4 more hospitals, 4 dialysis centers, 2 group practices and clinics, 1 physician office and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sumiko Iesha Armstead's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstead practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cypress Fairfield Dialysis | Available with a free account |
| +12 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sumiko Iesha Armstead is one of 1,045 nephrologists in Texas
Nephrology is Dr. Armstead's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Armstead is board certified in internal medicine by the American Board of Internal Medicine. Dr. Armstead is licensed in Texas.
Specialties and state licenses
- Nephrology, TexasPrimary
Clinical focus
Dmand AI lists chronic kidney disease among the conditions Dr. Armstead treats.
Nephrologists near Dr. Armstead
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Sumiko Iesha Armstead billed Medicare for 577 services in 2024
CMS data shows 577 Medicare services from Dr. Armstead across 7 procedure codes in 2024, for 173 Medicare patients. Medicare paid $63,638 for them.
Dr. Armstead's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4282024: 51621%
- Tests and treatments
- 2023: 962024: 6136%
Where Dr. Armstead's Medicare services took place, 2024
- In an office24042%
- In a facility33758%
Dr. Armstead compared with the Texas median for nephrologists, 2024
- Dr. Armstead
- Texas median
- Medicare services
- 577vs 1,04845% below
- Medicare patients
- 173vs 27738% below
- Part D claims
- 573vs 75824% below
Medians across 1,017 nephrologists in Texas with Dmand AI profiles that report each measure.
Dr. Armstead's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Armstead?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Armstead and other nephrologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sumiko Iesha Armstead treated 173 Medicare patients in 2024, average age 73
CMS counts 173 Medicare patients who saw Dr. Armstead in 2024. The largest group is 65 to 74, with 74 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 23% are also on Medicaid. Their average risk score is 3.07, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Armstead's median patient age at 68, with 60% women.
Dr. Armstead's Medicare patients by age, 2024
Dr. Armstead's Medicare patients by sex, 2024
- Women9857%
- Men7543%
Chronic conditions among Dr. Armstead's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes58%
- Ischemic heart disease53%
- Arthritis47%
- Heart failure47%
- Mood disorders38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Armstead's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sumiko Iesha Armstead wrote 826 Medicare Part D claims in 2024
In 2024, Dr. Armstead wrote 826 Medicare Part D claims for 177 patients. 84% of them were for generic drugs. CMS names the drug for 573 of them, across 23 drugs with 11 or more claims each, at $196,567 in total drug cost. In 2023, CMS named 509 claims across 22 drugs.
Dr. Armstead's Part D claims by kind of drug, 2024
- Generic692 claims84%
- Brand-name and other134 claims16%
Dr. Armstead's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Armstead's Part D claims, 2024
- Antibiotics10%83 of 826 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5092024: 57313%
Drugs named by CMS: 23 in 2024, 22 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Sumiko Iesha Armstead has 2 publications on record
Dmand AI links 2 papers to Dr. Armstead in 2013. Dr. Armstead's most frequent co-authors are Shuaib Abdullah, MD, James Andrew De Lemos, MD and Amit Khera, MD, MS.
Dr. Armstead's most frequent co-authors
- Shuaib Abdullah, MD1 shared paper
- James Andrew De Lemos, MD1 shared paper
- Amit Khera, MD, MS1 shared paper
Recent publications by Dr. Armstead
Diab Vasc Dis Res
See who Dr. Armstead researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Armstead works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Sumiko Iesha Armstead received $188 in industry payments from 2016 to 2021
CMS Open Payments shows 11 general payments to Dr. Armstead from 7 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $56.
General payments to Dr. Armstead by program year, 2016 to 2021
Companies that paid Dr. Armstead the most, 2016 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sumiko Iesha Armstead graduated from Baylor College Of Medicine
Dr. Armstead graduated from Baylor College Of Medicine in 2007.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Sumiko Iesha Armstead accepts plans from 21 insurance carriers
Dr. Armstead is in network with 21 carriers, including Elevance, Aetna and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.
- Elevance
- Aetna
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Humana
- Alliant Health Plans
- +13 more carriersWith a free account
Plan types Dr. Armstead accepts, by number of carriers
- HMO13
- PPO13
- Medicare11
- POS7
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sumiko Iesha Armstead's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Sumiko Iesha Armstead
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Sumiko Iesha Armstead's NPI number?
Dr. Sumiko Iesha Armstead's NPI number is 1528267812. It was assigned on July 16, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Sumiko Iesha Armstead?
Dr. Sumiko Iesha Armstead is a nephrologist in Katy, Texas. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Sumiko Iesha Armstead practice?
Dr. Armstead practices at 411 Park Grove Dr, Katy, TX 77450. Dr. Armstead's primary practice is Cypress Fairfield Dialysis in Katy, Texas. Dmand AI also links Dr. Armstead to 4 hospitals, 4 dialysis centers, 2 group practices and clinics, 1 physician office and 1 medical group.
What is Dr. Sumiko Iesha Armstead's office phone number?
The practice phone on file for Dr. Armstead is (281) 758-1380.
What is Dr. Sumiko Iesha Armstead's medical license number?
Dr. Armstead holds Texas license N4916.
Which hospitals is Dr. Sumiko Iesha Armstead affiliated with?
Dr. Armstead is affiliated with Memorial Hermann Greater Heights Hospital. Dmand AI links Dr. Armstead to 4 more hospitals.
What medical group is Dr. Sumiko Iesha Armstead part of?
Dr. Armstead is linked to Memorial Hermann Medical Group. Dmand AI links Dr. Armstead to 1 more medical group.
Does Dr. Sumiko Iesha Armstead accept Medicare?
Yes. CMS data shows Dr. Armstead billed Medicare for 577 services in 2024.
How many Medicare patients does Dr. Sumiko Iesha Armstead see?
CMS counts 173 Medicare patients who saw Dr. Armstead in 2024, with an average age of 73.
Is Dr. Sumiko Iesha Armstead board certified?
Yes. Dr. Armstead is board certified in internal medicine by the American Board of Internal Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Sumiko Iesha Armstead bill to Medicare?
In 2024, Dr. Armstead's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99214) and dialysis (90961).
Where did Dr. Sumiko Iesha Armstead go to medical school?
Dr. Armstead graduated from Baylor College Of Medicine in 2007.
What drugs does Dr. Sumiko Iesha Armstead prescribe most?
In 2024 Medicare Part D data, Dr. Armstead's most prescribed drugs by claims were Furosemide, Amlodipine Besylate and Nifedipine ER.
Has Dr. Sumiko Iesha Armstead received payments from drug or device companies?
CMS Open Payments shows $188 in general payments to Dr. Armstead from 7 companies from 2016 to 2021. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Sumiko Iesha Armstead been practicing?
Dr. Armstead graduated from medical school in 2007, 19 years ago.
Does Dr. Sumiko Iesha Armstead do research?
Dmand AI links 2 publications to Dr. Armstead.
Who does Dr. Sumiko Iesha Armstead publish with?
Dr. Armstead's most frequent co-authors are Shuaib Abdullah, MD (1 shared paper), James Andrew De Lemos, MD (1 shared paper) and Amit Khera, MD, MS (1 shared paper).
What insurance does Dr. Sumiko Iesha Armstead accept?
Dr. Armstead is in network with 21 carriers, including Elevance, Aetna and Excellus BlueCross BlueShield. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.
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