John W. Wassenaar, MD
Internal Medicine Physician · Osprey, FL
John W. Wassenaar, MD is an internal medicine physician with a practice address in Osprey, Florida, and NPI 1669462297, issued on Oct 25, 2005. Check the license (Florida ME55422, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- John W. Wassenaar
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- ME55422 FL
Self-reported in NPPES; status is on the state search - Practice location
- 929 S Tamiami Trl, Osprey, FL 34229
- Phone
- (941) 917-4700
- Enumerated
- Oct 25, 2005
- Record last updated
- Mar 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (941) 917-4710
- Medicaid ID
- 062118800 FL
- Medicare enrollment
- Enrolled (PECOS I20100310000312); accepts Medicare assignment
- Medical or professional school
- University Of Florida College Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 10,151 in Florida → Look up another NPI →
Also registered at 929 S Tamiami Trl
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John W. Wassenaar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME55422Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% more Medicare Part D claims than the average internal medicine physician in 2024
6,333 Medicare Part D claims for 482 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 242 claims were for opioids.
Most prescribed
- Alprazolam295 claims
- Losartan Potassium283 claims
- Levothyroxine Sodium278 claims
- Omeprazole260 claims
- Amlodipine Besylate213 claims
- Atorvastatin Calcium170 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $552.68
29 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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
- Smh Physician Services IncOsprey, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John W. Wassenaar among 10,151 internal medicine physician records in Florida
John W. Wassenaar, MD is one of 10,151 internal medicine physician records with a practice address in Florida. 84% 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, 90% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1985 · median 2004 among the 6,606 with a school on file
- Record last updated2020 · 48% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Osprey
They are 9 of the 96 NPPES records with a practice address in Osprey, and 10,151 internal medicine physician records in Florida.
All 10,151 in Florida → Every provider in Osprey → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leanne Artigas, M.D.Osprey, FL 342291568601557
- Patrick Begley, D.OOsprey, FL 342291265880033
- Lindsey Finnegan, M.D.Osprey, FL 342291275853954
- Karen Hamad, MDOsprey, FL 342291457341422
- Alan King, DOOsprey, FL 342291649260704
- John Rodman, MDOsprey, FL 342291750371613
- Sarah Scarselletta, M.D.Osprey, FL 342291326280413
- Joseph Yeh, MDOsprey, FL 342291700876802
Common questions
What is John W. Wassenaar, MD's NPI number?
John W. Wassenaar, MD's National Provider Identifier (NPI) is 1669462297, issued on Oct 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John W. Wassenaar, MD located?
The NPPES record lists a practice address at 929 S Tamiami Trl, Osprey, FL, 34229. Phone: (941) 917-4700. Providers update this record themselves, so call before visiting.
How can I verify John W. Wassenaar, MD's license?
NPPES lists Florida license number ME55422, 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 John W. Wassenaar, MD prescribe under Medicare Part D?
In 2024, John W. Wassenaar, MD had 6,333 Medicare Part D claims for 482 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is John W. Wassenaar, MD's MIPS final score?
The 2023 MIPS final score is 78.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.