J Vasc Interv Radiol
Ambulatory CareCatheters, IndwellingEnteral Nutrition
Dr. Ryan N. Armstrong, MD
NPI1154453355PAC ID7911055835
- Medicare services, 2024
- 605
- Medicare patients, 2024
- 313
- Part D claims, 2024
- 33
- Publications
- 1
- MIPS score, 2024
- 74
- Practice address
- 6191 E Sam Houston N Pkwy, Houston, TX 77049
- Practice phone
- Call (915) 264-3174
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Singleton Associates PA
Houston, Texas
Find Dr. Armstrong's professional email, personal email and mobile number
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Dr. Ryan N. Armstrong is an interventional radiologist in Houston, Texas
Dr. Armstrong practices at Singleton Associates PA in Houston, Texas.
Dr. Armstrong's NPI, 1154453355, was assigned on March 12, 2007. Dr. Armstrong graduated from University of Texas Medical School at San Antonio in 2003. Dr. Armstrong holds Texas license M3868.
NPI and contact details
- NPI
- 1154453355NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911055835
- NPI enumeration date
- March 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (915) 264-3174
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan N. Armstrong practices at Singleton Associates PA in Houston, Texas
Dr. Armstrong's primary practice is Singleton Associates PA, at 6191 E Sam Houston N Pkwy, Houston, TX 77049 in Harris County. The practice phone is (915) 264-3174.
- Singleton Associates PA6191 E Sam Houston N Pkwy, Houston, TX 77049 · Harris CountyPhone(915) 264-3174
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ryan N. Armstrong is affiliated with 5 sites of care and 3 medical groups
Dr. Armstrong's primary practice is Singleton Associates PA in Houston, Texas. Dr. Armstrong is also affiliated with Memorial Hermann Greater Heights Hospital. The medical group on file is Singleton Associates PA. Dmand AI also links Dr. Armstrong to 1 more hospital, 2 group practices and clinics and 2 medical groups, each named with a free account.
Singleton Associates PAPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ryan N. Armstrong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Singleton Associates PA | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ryan N. Armstrong is one of 292 interventional radiologists in Texas
Vascular and interventional radiology is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 2085R0204X. Dr. Armstrong is licensed in Texas.
Specialties and state licenses
- Vascular and interventional radiology, TexasPrimary
Interventional radiologists near Dr. Armstrong
Counts of interventional radiologists 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. Ryan N. Armstrong billed Medicare for 605 services in 2024
CMS data shows 605 Medicare services from Dr. Armstrong across 15 procedure codes in 2024, for 313 Medicare patients. Medicare paid $140,120 for them.
Medicare services, 2024605
Medicare patients313
Paid by Medicare$140,120
Procedure codes15
Dr. Armstrong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 332024: 227588%
- Tests and treatments
- 2023: 562024: 159184%
- Surgery
- 2023: 802024: 11848%
- Imaging
- 2023: 1,3682024: 10193%
Where Dr. Armstrong's Medicare services took place, 2024
- In an office50483%
- In a facility10117%
Dr. Armstrong compared with the Texas median for interventional radiologists, 2024
- Dr. Armstrong
- Texas median
- Medicare services
- 605vs 84028% below
- Medicare patients
- 313vs 48235% below
Medians across 279 interventional radiologists in Texas with Dmand AI profiles that report each measure.
Dr. Armstrong'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. Armstrong?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Armstrong and other interventional radiologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ryan N. Armstrong treated 313 Medicare patients in 2024, average age 73
CMS counts 313 Medicare patients who saw Dr. Armstrong in 2024. The largest group is 65 to 74, with 140 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 14% are also on Medicaid. Their average risk score is 2.27, 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. Armstrong's median patient age at 58, with 64% women.
Medicare patients, 2024313
Average age73
Average risk score2.27
Also on Medicaid14%
Dr. Armstrong's Medicare patients by age, 2024
Dr. Armstrong's Medicare patients by sex, 2024
- Women17155%
- Men14245%
Chronic conditions among Dr. Armstrong's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Ischemic heart disease50%
- Diabetes45%
- Chronic kidney disease39%
- Mood disorders35%
- Anxiety32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Armstrong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women64%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ryan N. Armstrong wrote 33 Medicare Part D claims in 2024
In 2024, Dr. Armstrong wrote 33 Medicare Part D claims for 13 patients. 94% of them were for generic drugs.
Part D claims, 202433
Part D patients13
Dr. Armstrong's Part D claims by kind of drug, 2024
- Generic31 claims94%
- Brand-name and other2 claims6%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ryan N. Armstrong scored 74 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 74 out of 100 for Dr. Armstrong for performance year 2024, reported as part of a group. Dr. Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 199 procedures of varicose vein removal by Dr. Armstrong, more than 90% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Armstrong's MIPS scores, performance year 2024
- 74of 100Final score
- 81.2of 100Quality
- 84of 100Promoting Interoperability
- 40of 100Improvement Activities
- 45of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Armstrong ranks in Medicare procedure volume
- Varicose vein removal
- 90th percentile199 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Ryan N. Armstrong has 1 publication on record
Dmand AI links 1 paper to Dr. Armstrong. Dr. Armstrong's most frequent co-authors are Sharjeel H. Sabir, MD and Alda Lui Tam, MD.
Papers1
Dr. Armstrong's most frequent co-authors
Recent publications by Dr. Armstrong
See who Dr. Armstrong researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Armstrong works with, so you can find a warm path to the right interventional radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ryan N. Armstrong received $825 in industry payments from 2016 to 2025
CMS Open Payments shows 20 general payments to Dr. Armstrong from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Inari Medical, Inc. paid the most, $176.
General payments to Dr. Armstrong by program year, 2016 to 2025
Companies that paid Dr. Armstrong the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ryan N. Armstrong graduated from University of Texas Medical School at San Antonio
Dr. Armstrong graduated from University of Texas Medical School at San Antonio in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ryan N. Armstrong'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 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 (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 |
| 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. Ryan N. Armstrong
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. Ryan N. Armstrong's NPI number?
Dr. Ryan N. Armstrong's NPI number is 1154453355. It was assigned on March 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan N. Armstrong?
Dr. Ryan N. Armstrong is an interventional radiologist in Houston, Texas. The primary specialty in the NPI Registry is Vascular & Interventional Radiology Physician (taxonomy code 2085R0204X).
Where does Dr. Ryan N. Armstrong practice?
Dr. Armstrong practices at 6191 E Sam Houston N Pkwy, Houston, TX 77049. Dr. Armstrong's primary practice is Singleton Associates PA in Houston, Texas. Dmand AI also links Dr. Armstrong to 1 hospital, 2 group practices and clinics and 2 medical groups.
What is Dr. Ryan N. Armstrong's office phone number?
The practice phone on file for Dr. Armstrong is (915) 264-3174.
What is Dr. Ryan N. Armstrong's medical license number?
Dr. Armstrong holds Texas license M3868.
Which hospitals is Dr. Ryan N. Armstrong affiliated with?
Dr. Armstrong is affiliated with Memorial Hermann Greater Heights Hospital. Dmand AI links Dr. Armstrong to 1 more hospital.
What medical group is Dr. Ryan N. Armstrong part of?
Dr. Armstrong is linked to Singleton Associates PA. Dmand AI links Dr. Armstrong to 2 more medical groups.
Does Dr. Ryan N. Armstrong accept Medicare?
Yes. CMS data shows Dr. Armstrong billed Medicare for 605 services in 2024, and Dr. Armstrong accepts Medicare assignment.
What is Dr. Ryan N. Armstrong's MIPS score?
Dr. Armstrong's MIPS final score for performance year 2024 is 74 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ryan N. Armstrong see?
CMS counts 313 Medicare patients who saw Dr. Armstrong in 2024, with an average age of 73.
Show 6 more questionsShow fewer questions
What services does Dr. Ryan N. Armstrong bill to Medicare?
In 2024, Dr. Armstrong's most billed Medicare services were blood vessel study (93970), office visit, established patient (99213) and surgery: heart and blood vessels (36475).
Where did Dr. Ryan N. Armstrong go to medical school?
Dr. Armstrong graduated from University of Texas Medical School at San Antonio in 2003.
Has Dr. Ryan N. Armstrong received payments from drug or device companies?
CMS Open Payments shows $825 in general payments to Dr. Armstrong from 13 companies from 2016 to 2025. The largest total came from Inari Medical, Inc.
How long has Dr. Ryan N. Armstrong been practicing?
Dr. Armstrong graduated from medical school in 2003, 23 years ago.
Does Dr. Ryan N. Armstrong do research?
Dmand AI links 1 publication to Dr. Armstrong.
Who does Dr. Ryan N. Armstrong publish with?
Dr. Armstrong's most frequent co-authors are Sharjeel H. Sabir, MD (1 shared paper) and Alda Lui Tam, MD (1 shared paper).
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