Denis Walter Grillo, D.O.
Otolaryngology/Facial Plastic Surgery Physician · Crystal River, FL
Denis Walter Grillo, D.O. is an otolaryngology/facial plastic surgery physician with a practice address in Crystal River, Florida, and NPI 1235127937, issued on Oct 7, 2005. Check the license (Florida OS5716, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Denis Walter Grillo
- Credential
- D.O.
- Primary taxonomy
- Otolaryngology/Facial Plastic Surgery Physician 207YX0905X
- License number
- OS5716 FL
Self-reported in NPPES; status is on the state search - Practice location
- 790 SE 5TH Ter, Crystal River, FL 34429
- Phone
- (352) 795-0011
- Enumerated
- Oct 7, 2005
- Record last updated
- Sep 11, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (352) 795-9481
- Medicare enrollment
- Enrolled (PECOS I20040226000665); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1982
- Entity
- Type 1 · individual
8 nearest otolaryngology/facial plastic surgery physician records → All 54 in Florida → Look up another NPI →
Verify Denis Walter Grillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license OS5716Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average otolaryngology/facial plastic surgery physician in 2024
515 Medicare Part D claims for 291 beneficiaries, against an average of 550 among the 650 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 21 claims were for opioids.
Most prescribed
- Ipratropium Bromide127 claims
- Neomycin-Polymyxin-Hc64 claims
- Epinephrine50 claims
- Ciprofloxacin-Dexamethasone32 claims
- Clotrimazole-Betamethasone30 claims
- Cephalexin24 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $17.37
1 payment: food and beverage; the largest payer was Aerin Medical Inc. The 515 providers of this specialty with any payment received $1,724.75 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.
Denis Walter Grillo among 54 otolaryngology/facial plastic surgery physician records in Florida
Denis Walter Grillo, D.O. is one of 54 otolaryngology/facial plastic surgery physician records with a practice address in Florida. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1982 · median 1995 among the 39 with a school on file
- Record last updated2018 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207YX0905X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology/Facial Plastic Surgery Physician providers in Florida
There are 54 otolaryngology/facial plastic surgery physician records in Florida.
All 54 in Florida → Every provider in Crystal River → Otolaryngology/Facial Plastic Surgery Physician nationwide →
The 8 otolaryngology/facial plastic surgery physician records with the nearest ZIP codes
- Charles Grayson, DOOcala, FL 344711629076252
- Scott Nadenik, D.O.Ocala, FL 344711568459592
- Stephen Reynolds, DOOcala, FL 344711245624683
- Mark Checcone, MDSarasota, FL 342331548463839
- Robert Klausner, M.D.Bonita Springs, FL 341341134156771
- Jeffery Magnuson, MDCelebration, FL 347471891727418
- Michael Seidman, M.D.Celebration, FL 347471205902673
- Thuong Trinh, DOSaint Cloud, FL 347691831308907
Common questions
What is Denis Walter Grillo, D.O.'s NPI number?
Denis Walter Grillo, D.O.'s National Provider Identifier (NPI) is 1235127937, issued on Oct 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Denis Walter Grillo, D.O. located?
The NPPES record lists a practice address at 790 SE 5TH Ter, Crystal River, FL, 34429. Phone: (352) 795-0011. Providers update this record themselves, so call before visiting.
How can I verify Denis Walter Grillo, D.O.'s license?
NPPES lists Florida license number OS5716, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Denis Walter Grillo, D.O. prescribe under Medicare Part D?
In 2024, Denis Walter Grillo, D.O. had 515 Medicare Part D claims for 291 beneficiaries; the average among otolaryngology/facial plastic surgery physician prescribers was 550. Part D covers Medicare prescriptions only.
What is Denis Walter Grillo, D.O.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.