Greggory Gahn, MD - Medicare Ophthalmology in Tucson, AZ

Greggory Gahn, MD is a medicare enrolled "Ophthalmology - Retina Specialist" physician in Tucson, Arizona. He went to University Of Nevada School Of Medicine and graduated in 2019 and has 7 years of diverse experience with area of expertise as Ophthalmology. He is a member of the group practice Plecha Durant Stanko Johnson And Cohen A Professional Corporation and his current practice location is 3172 N Swan Rd, Tucson, Arizona. You can reach out to his office (for appointments etc.) via phone at (520) 881-1400.

Greggory Gahn is licensed to practice in Arizona (license number 80326) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1720541147.

Contact Information

Greggory Gahn, MD
3172 N Swan Rd,
Tucson, AZ 85712-1227
(520) 881-1400
Not Available

Map and Direction




Physician's Profile

Full NameGreggory Gahn
GenderMale
SpecialityOphthalmology
Experience7 Years
Location3172 N Swan Rd, Tucson, Arizona
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Greggory Gahn attended and graduated from University Of Nevada School Of Medicine in 2019
  NPI Data:
  • NPI Number: 1720541147
  • Provider Enumeration Date: 04/11/2019
  • Last Update Date: 09/09/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 5698000933
  • Enrollment ID: I20230606002444

Medical Identifiers

Medical identifiers for Greggory Gahn such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1720541147NPI-NPPES
CP8528OtherNVCP8528

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207WX0107XOphthalmology - Retina Specialist 80326 (Arizona)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northern Nevada Medical CenterSparks, NVHospital
Renown Regional Medical CenterReno, NVHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Plecha Durant Stanko Johnson And Cohen A Professional Corporation68008733404

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Greggory Gahn allows following entities to bill medicare on his behalf.
Entity NamePlecha Durant Stanko Johnson & Cohen a Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316022551
PECOS PAC ID: 6800873340
Enrollment ID: O20040702000355

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Greggory Gahn is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Greggory Gahn, MD
3172 N Swan Rd,
Tucson, AZ 85712-1227

Ph: (520) 881-1400
Greggory Gahn, MD
3172 N Swan Rd,
Tucson, AZ 85712-1227

Ph: (520) 881-1400

Reviews and Comments


Ophthalmology Doctors in Tucson, AZ

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Dr. Jeffrey S Kay, MD
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Phone: 520-544-4393    Fax: 520-544-0098
David Wayne Day, MD
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Practice Location: 1500 N Wilmot Rd, Suite A-100, Tucson, AZ 85712
Phone: 520-777-3777    Fax: 520-777-3220

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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