Marc S Greenstein, DO - Medicare Obstetrics/gynecology in Rochester, NY

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Marc S Greenstein, DO is a medicare enrolled "Obstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery" physician in Rochester, New York. He went to New York College Of Osteo Medicine Of New York Institute Of Technology and graduated in 1991 and has 33 years of diverse experience with area of expertise as Obstetrics/gynecology. He is a member of the group practice University Of Rochester Obgyn Subspecialties and his current practice location is 3101 W Ridge Rd, Building D, Rochester, New York. You can reach out to his office (for appointments etc.) via phone at (585) 225-1580.

Marc S Greenstein is licensed to practice in New York (license number 190045) 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 1346354404.

Contact Information

Marc S Greenstein, DO
3101 W Ridge Rd, Building D,
Rochester, NY 14626-3249
(585) 225-1580
(585) 225-2040

Map and Direction




Physician's Profile

Full NameMarc S Greenstein
GenderMale
SpecialityObstetrics/gynecology
Experience33 Years
Location3101 W Ridge Rd, Rochester, New York
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:
  • Marc S Greenstein attended and graduated from New York College Of Osteo Medicine Of New York Institute Of Technology in 1991
  NPI Data:
  • NPI Number: 1346354404
  • Provider Enumeration Date: 08/18/2006
  • Last Update Date: 05/15/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6406948454
  • Enrollment ID: I20070822000782

Medical Identifiers

Medical identifiers for Marc S Greenstein such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1346354404NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207VG0400XObstetrics & Gynecology - Gynecology 190045 (New York)Secondary
207VF0040XObstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery 190045 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Strong Memorial HospitalRochester, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
University Of Rochester Obgyn Subspecialties892116135717

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. Marc S Greenstein allows following entities to bill medicare on his behalf.
Entity NameUniversity Of Rochester
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710226824
PECOS PAC ID: 5799699088
Enrollment ID: O20031201000019
Entity NameStrong Obstetrics-gynecology Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1184668311
PECOS PAC ID: 2860382926
Enrollment ID: O20040319001257
Entity NameWest Ridge Obstetrics And Gynecology, Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992897409
PECOS PAC ID: 5395775852
Enrollment ID: O20050816000142
Entity NameUniversity Of Rochester Obgyn Subspecialties
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205084969
PECOS PAC ID: 8921161357
Enrollment ID: O20090112000642

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. Marc S Greenstein 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
Marc S Greenstein, DO
601 Elmwood Ave Box 668,
Rochester, NY 14642-0001

Ph: (585) 671-6790		Marc S Greenstein, DO
3101 W Ridge Rd, Building D,
Rochester, NY 14626-3249

Ph: (585) 225-1580

Reviews and Comments


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Dr. Katina Marie Foster, MD
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Erin M Masaba, MD
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Phone: 585-487-3378    

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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