Guy T. Joassin, MD
Family Medicine Physician · New Haven, IN
Guy T. Joassin, MD is a family medicine physician with a practice address in New Haven, Indiana, and NPI 1629001136, issued on Jul 8, 2006. Check the license (Indiana 01054909A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Guy T. Joassin
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 01054909A IN
Self-reported in NPPES; status is on the state search - Practice location
- 16617 Darling RD, New Haven, IN 46774
- Phone
- (260) 657-1335
- Enumerated
- Jul 8, 2006
- Record last updated
- Aug 18, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- 200378390 IN
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,506 in Indiana → Look up another NPI →
Verify Guy T. Joassin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01054909ACheck 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% fewer Medicare Part D claims than the average family medicine physician in 2024
39 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Guy T. Joassin among 3,506 family medicine physician records in Indiana
Guy T. Joassin, MD is one of 3,506 family medicine physician records with a practice address in Indiana. 81% 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 19% of them.
- NPI issued2006 · 19% of these records are older, 46% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2009 · 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 207Q00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 family medicine physician records list a practice address in New Haven
They are 7 of the 86 NPPES records with a practice address in New Haven, and 3,506 family medicine physician records in Indiana.
All 3,506 in Indiana → Every provider in New Haven → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Thomas Bond, M.D.New Haven, IN 467741003891219
- Levi Myers, DONew Haven, IN 467741821729005
- Michael Rumple, M.D.New Haven, IN 467741770560047
- Thomas Smith, M.D.New Haven, IN 467741790762870
- Corey Snyder, MDNew Haven, IN 467741417571209
- Lawrence Wuest, M.D.New Haven, IN 467741821075953
- Donald Giant, MDMonroeville, IN 467731518958909
- Alec Arturi, DOMonroe, IN 467721063901551
Common questions
What is Guy T. Joassin, MD's NPI number?
Guy T. Joassin, MD's National Provider Identifier (NPI) is 1629001136, issued on Jul 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Guy T. Joassin, MD located?
The NPPES record lists a practice address at 16617 Darling RD, New Haven, IN, 46774. Phone: (260) 657-1335. Providers update this record themselves, so call before visiting.
How can I verify Guy T. Joassin, MD's license?
NPPES lists Indiana license number 01054909A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Guy T. Joassin, MD prescribe under Medicare Part D?
In 2024, Guy T. Joassin, MD had 39 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.