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Dr. Nicolas Athanassiou, MD
NPI1750449831PAC ID7719918747
- Medicare services, 2024
- 53
- Medicare patients, 2024
- 70
- Publications
- 1
- MIPS score, 2024
- 89
- Hospital affiliations
- 2
- Practice address
- 6565 Fannin, Houston, TX 77030
- Practice phone
- Call (713) 790-2221
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Athanassiou's professional email, personal email and mobile number
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Dr. Nicolas Athanassiou is an anesthesiologist in Houston, Texas
Dr. Athanassiou practices at Houston Methodist Hospital in Houston, Texas, part of Houston Methodist.
Dr. Athanassiou's NPI, 1750449831, was assigned on December 4, 2006. Dr. Athanassiou graduated from University of Athens in 1986. Dr. Athanassiou holds Texas license L3914.
NPI and contact details
- NPI
- 1750449831NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719918747
- NPI enumeration date
- December 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (713) 790-2221
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicolas Athanassiou practices at Houston Methodist Hospital in Houston, Texas
Dr. Athanassiou's primary practice is Houston Methodist Hospital, at 6565 Fannin, Houston, TX 77030 in Harris County. The practice phone is (713) 790-2221.
- Houston Methodist Hospital6565 Fannin, Houston, TX 77030 · Harris CountyPhone(713) 790-2221
Source: Dmand AI Affiliation Data
Dr. Nicolas Athanassiou is affiliated with 4 sites of care and 1 medical group
Dr. Athanassiou's primary practice is Houston Methodist Hospital in Houston, Texas, part of Houston Methodist. Dr. Athanassiou is also affiliated with Houston Methodist West Hospital. The medical group on file is US Anesthesia Partners. Dmand AI also links Dr. Athanassiou to 1 more group practice or clinic and 1 skilled nursing facility, each named with a free account.
Houston Methodist West HospitalUS Anesthesia Partners1 group practice or clinicName with a free account1 skilled nursing facilityName with a free account
See all 5 affiliations for Dr. AthanassiouSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nicolas Athanassiou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Athanassiou practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Houston Methodist Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Nicolas Athanassiou is one of 4,073 anesthesiologists in Texas
Anesthesiology is Dr. Athanassiou's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Athanassiou is board certified in anesthesiology by the American Board of Anesthesiology. Dr. Athanassiou is licensed in Texas.
Specialties and state licenses
- Anesthesiology, TexasPrimary
Anesthesiologists near Dr. Athanassiou
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
4,073anesthesiologists in Texas805anesthesiologists in Houston59anesthesiologists at Houston Methodist Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nicolas Athanassiou billed Medicare for 53 services in 2024
CMS data shows 53 Medicare services from Dr. Athanassiou across 4 procedure codes in 2024, for 70 Medicare patients. Medicare paid $1,755 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202453
Medicare patients70
Paid by Medicare$1,755
Procedure codes4
Dr. Athanassiou's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 382024: 393%
- Surgery
- 2023: 362024: 1461%
- Anesthesia
- 2023: 842024: 0100%
Dr. Athanassiou compared with the Texas median for anesthesiologists, 2024
- Dr. Athanassiou
- Texas median
- Medicare services
- 53vs 7125% below
- Medicare patients
- 70vs 13247% below
Medians across 3,710 anesthesiologists in Texas with Dmand AI profiles that report each measure.
Dr. Athanassiou'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nicolas Athanassiou treated 70 Medicare patients in 2024, average age 73
CMS counts 70 Medicare patients who saw Dr. Athanassiou in 2024. The largest group is 65 to 74, with 34 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.76, 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. Athanassiou's median patient age at 74, with 36% women.
Medicare patients, 202470
Average age73
Average risk score2.76
Dr. Athanassiou's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Athanassiou's Medicare patients by sex, 2024
- Women2536%
- Men4564%
Chronic conditions among Dr. Athanassiou's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease74%
- Atrial fibrillation57%
- Chronic kidney disease51%
- Heart failure47%
- Arthritis46%
- Diabetes46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Athanassiou's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women36%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nicolas Athanassiou scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Athanassiou for performance year 2024, reported as part of a group. Dr. Athanassiou accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Athanassiou's MIPS scores, performance year 2024
- 89of 100Final score
- 91.3of 100Quality
- 40of 100Improvement Activities
- 79of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Nicolas Athanassiou has 1 publication on record
Dmand AI links 1 paper to Dr. Athanassiou.
Papers1
Recent publications by Dr. Athanassiou
See who Dr. Athanassiou researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Athanassiou works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nicolas Athanassiou received $2,791 in industry payments from 2016 to 2025
CMS Open Payments shows 64 general payments to Dr. Athanassiou from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $656.
General payments to Dr. Athanassiou by program year, 2016 to 2025
Companies that paid Dr. Athanassiou 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. Nicolas Athanassiou graduated from University of Athens
Dr. Athanassiou graduated from University of Athens in 1986.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Nicolas Athanassiou accepts plans from 8 insurance carriers
Dr. Athanassiou is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Molina
- Regence Health Plans
- Arkansas Blue Cross and Blue Shield
- CMS Medicare
Plan types Dr. Athanassiou accepts, by number of carriers
- Medicare7
- PPO6
- HMO4
- POS3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Nicolas Athanassiou'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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) |
| 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. Nicolas Athanassiou
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. Nicolas Athanassiou's NPI number?
Dr. Nicolas Athanassiou's NPI number is 1750449831. It was assigned on December 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicolas Athanassiou?
Dr. Nicolas Athanassiou is an anesthesiologist in Houston, Texas. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Nicolas Athanassiou practice?
Dr. Athanassiou practices at 6565 Fannin, Houston, TX 77030. Dr. Athanassiou's primary practice is Houston Methodist Hospital in Houston, Texas, part of Houston Methodist. Dmand AI also links Dr. Athanassiou to 1 group practice or clinic and 1 skilled nursing facility.
What is Dr. Nicolas Athanassiou's office phone number?
The practice phone on file for Dr. Athanassiou is (713) 790-2221.
What is Dr. Nicolas Athanassiou's medical license number?
Dr. Athanassiou holds Texas license L3914.
Which hospitals is Dr. Nicolas Athanassiou affiliated with?
Dr. Athanassiou practices at Houston Methodist Hospital in Houston, Texas. Dr. Athanassiou is also affiliated with Houston Methodist West Hospital.
What medical group is Dr. Nicolas Athanassiou part of?
Dr. Athanassiou is linked to US Anesthesia Partners.
Does Dr. Nicolas Athanassiou accept Medicare?
Yes. CMS data shows Dr. Athanassiou billed Medicare for 53 services in 2024, and Dr. Athanassiou accepts Medicare assignment.
What is Dr. Nicolas Athanassiou's MIPS score?
Dr. Athanassiou's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Nicolas Athanassiou see?
CMS counts 70 Medicare patients who saw Dr. Athanassiou in 2024, with an average age of 73.
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Is Dr. Nicolas Athanassiou board certified?
Yes. Dr. Athanassiou is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Nicolas Athanassiou bill to Medicare?
In 2024, Dr. Athanassiou's most billed Medicare services were surgery: heart and blood vessels (36620), heart test or procedure (93312) and heart test or procedure (93320).
Where did Dr. Nicolas Athanassiou go to medical school?
Dr. Athanassiou graduated from University of Athens in 1986.
Has Dr. Nicolas Athanassiou received payments from drug or device companies?
CMS Open Payments shows $2,791 in general payments to Dr. Athanassiou from 22 companies from 2016 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Nicolas Athanassiou been practicing?
Dr. Athanassiou graduated from medical school in 1986, 40 years ago.
Does Dr. Nicolas Athanassiou do research?
Dmand AI links 1 publication to Dr. Athanassiou.
What insurance does Dr. Nicolas Athanassiou accept?
Dr. Athanassiou is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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