Gregory Hanissian, MD
Allergy & Immunology Physician · Germantown, TN
Gregory Hanissian, MD is an allergy & immunology physician with a practice address in Germantown, Tennessee, and NPI 1033216148, issued on Sep 20, 2006. Check the license (Tennessee 25121, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Gregory Hanissian
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 25121 TN
Self-reported in NPPES; status is on the state search - Practice location
- 2101 Merchants Row, Germantown, TN 38138
- Phone
- (901) 751-9696
- Enumerated
- Sep 20, 2006
- Entity
- Type 1 · individual
Verify Gregory Hanissian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTennessee Board of Medical Examiners
Search for license 25121Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
38% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
487 Medicare Part D claims for 115 beneficiaries, against an average of 788 among the 2,397 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Fluticasone-Salmeterol34 claims
- Montelukast Sodium31 claims
- Albuterol Sulfate Hfa29 claims
- Azelastine Hcl27 claims
- Dupixent Pen26 claims
- Dupixent Syringe24 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: $1,748.76
82 payments, mostly food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 2,070 providers of this specialty with any payment received $8,602.63 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.
One hospital or facility affiliation
- Consolidated Medical Practices OF Memphis,pllcMemphis, TN
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Allergy & Immunology Physician providers in Tennessee
There are 65 allergy & immunology physician records in Tennessee.
Other allergy & immunology physician records in Tennessee
- Sarah Adams, M.D.Hendersonville, TN1366705592
- Jean Alexander, MDDickson, TN1790788982
- Krystyna Alimurka, M.D.Hixson, TN1306842430
- Taylor Atchley, MDChattanooga, TN1972923860
- Shirley Avery, MDKnoxville, TN1396017018
- Joseph Belleau, MDBrentwood, TN1346297371
- Donald Brothers, M.D.Nashville, TN1609801919
- Wesley Cain, DOMount Juliet, TN1841854916
- Cristina Carter, MDBrentwood, TN1598023095
- David Chaffin, M.D.Chattanooga, TN1235178377
Common questions
What is Gregory Hanissian, MD's NPI number?
Gregory Hanissian, MD's National Provider Identifier (NPI) is 1033216148, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Hanissian, MD located?
The NPPES record lists a practice address at 2101 Merchants Row, Germantown, TN, 38138. Phone: (901) 751-9696. Providers update this record themselves, so call before visiting.
How can I verify Gregory Hanissian, MD's license?
NPPES lists Tennessee license number 25121, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Hanissian, MD prescribe under Medicare Part D?
In 2024, Gregory Hanissian, MD had 487 Medicare Part D claims for 115 beneficiaries; the average among allergy & immunology physician prescribers was 788. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.