Gerardo Posadas Sison, M.D.
Psychiatry Physician · Palm Harbor, FL
Gerardo Posadas Sison, M.D. is a psychiatry physician with a practice address in Palm Harbor, Florida, and NPI 1275553174, issued on Jul 20, 2006. Check the license (Florida ME53725, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Gerardo Posadas Sison
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- ME53725 FL
Self-reported in NPPES; status is on the state search - Practice location
- 34650 US Highway 19 N, Palm Harbor, FL 34684
- Phone
- (727) 787-3422
- Enumerated
- Jul 20, 2006
- Record last updated
- Jun 17, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (727) 787-5624
- Medicaid ID
- 064334300 FL
- Medicare enrollment
- Enrolled (PECOS I20111122000464); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,744 in Florida → Look up another NPI →
Also registered at 34650 US Highway 19 N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Allison Hopps, APRNPsychiatric/Mental Health Nurse Practitioner1306675012
Verify Gerardo Posadas Sison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME53725Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average psychiatry physician in 2024
1,187 Medicare Part D claims for 81 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Alprazolam144 claims
- Clonazepam130 claims
- Diazepam75 claims
- Duloxetine Hcl72 claims
- Fluoxetine Hcl70 claims
- Zolpidem Tartrate54 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.
Gerardo Posadas Sison among 2,744 psychiatry physician records in Florida
Gerardo Posadas Sison, M.D. is one of 2,744 psychiatry physician records with a practice address in Florida. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 47% of these records are
- Graduated1985 · median 2003 among the 1,283 with a school on file
- Record last updated2012 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Florida
There are 2,744 psychiatry physician records in Florida.
All 2,744 in Florida → Every provider in Palm Harbor → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Lisa French, MDPalm Harbor, FL 346841528056132
- Ayman Hanna, MDPalm Harbor, FL 346831275567026
- Bernard Lopez, MDPalm Harbor, FL 346831568458891
- Darren Rothschild, M.D.Palm Harbor, FL 346831952486383
- William Cua, MDTarpon Springs, FL 346881679583751
- Heather Neeley, M.D.Tarpon Springs, FL 346891073613949
- Irene Nickolakis, M.D.Tarpon Springs, FL 346891518002278
- Mark Lechner, M.D.Holiday, FL 346911568605533
Common questions
What is Gerardo Posadas Sison, M.D.'s NPI number?
Gerardo Posadas Sison, M.D.'s National Provider Identifier (NPI) is 1275553174, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerardo Posadas Sison, M.D. located?
The NPPES record lists a practice address at 34650 US Highway 19 N, Palm Harbor, FL, 34684. Phone: (727) 787-3422. Providers update this record themselves, so call before visiting.
How can I verify Gerardo Posadas Sison, M.D.'s license?
NPPES lists Florida license number ME53725, 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 Gerardo Posadas Sison, M.D. prescribe under Medicare Part D?
In 2024, Gerardo Posadas Sison, M.D. had 1,187 Medicare Part D claims for 81 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.