Maria Kapetanios-Fountoulakis, D.O.
Internal Medicine Physician · Henderson, NV
Maria Kapetanios-Fountoulakis, D.O. is an internal medicine physician with a practice address in Henderson, Nevada, and NPI 1538891619, issued on Jun 28, 2022. Check the license (Nevada DO3905, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Maria Kapetanios-Fountoulakis
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DO3905 NV
Self-reported in NPPES; status is on the state search - Practice location
- 10001 S Eastern Ave Ste 101, Henderson, NV 89052
- Phone
- (702) 616-5870
- Enumerated
- Jun 28, 2022
- Record last updated
- Nov 3, 2025
- Fax
- (702) 616-5895
- Medicare enrollment
- Enrolled (PECOS I20250728003979); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,229 in Nevada → Look up another NPI →
Also registered at 10001 S Eastern Ave Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maria Kapetanios-Fountoulakis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license DO3905Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
228 Medicare Part D claims for 44 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Lisinopril12 claims
- Furosemide11 claims
- Gabapentin11 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.
Industry payments in 2024: $46.23
2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Dignity Health Medical Group Nevada LLCLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria Kapetanios-Fountoulakis among 1,229 internal medicine physician records in Nevada
Maria Kapetanios-Fountoulakis, D.O. is one of 1,229 internal medicine physician records with a practice address in Nevada. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 92% of them.
- NPI issued2022 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2022 · median 2006 among the 772 with a school on file
- Record last updated2025 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
181 internal medicine physician records list a practice address in Henderson
They are 181 of the 7,490 NPPES records with a practice address in Henderson, and 1,229 internal medicine physician records in Nevada.
All 1,229 in Nevada → Every provider in Henderson → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Hossein Akhondi Asl, M.D.Henderson, NV 890521609862051
- Poupak Bigger, M.D.Henderson, NV 890521023010782
- Victor Bonuel, MDHenderson, NV 890521801869862
- Hugh Burt, M.D.Henderson, NV 890521972599371
- Pio Clavecilla, MDHenderson, NV 890521659349140
- Guillermo Fraga, MDHenderson, NV 890521104809433
- Robert Gong, M.D.Henderson, NV 890521265409601
- Witold Iglikowski, M.D.Henderson, NV 890521164412680
Common questions
What is Maria Kapetanios-Fountoulakis, D.O.'s NPI number?
Maria Kapetanios-Fountoulakis, D.O.'s National Provider Identifier (NPI) is 1538891619, issued on Jun 28, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Maria Kapetanios-Fountoulakis, D.O. located?
The NPPES record lists a practice address at 10001 S Eastern Ave Ste 101, Henderson, NV, 89052. Phone: (702) 616-5870. Providers update this record themselves, so call before visiting.
How can I verify Maria Kapetanios-Fountoulakis, D.O.'s license?
NPPES lists Nevada license number DO3905, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Maria Kapetanios-Fountoulakis, D.O. prescribe under Medicare Part D?
In 2024, Maria Kapetanios-Fountoulakis, D.O. had 228 Medicare Part D claims for 44 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.