Dr Inessa M Gelfand, MD - Medicare Endocrinology in Buffalo Grove, IL

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Dr Inessa M Gelfand, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Buffalo Grove, Illinois. She went to Rush Medical College Of Rush University and graduated in 1998 and has 28 years of diverse experience with area of expertise as Endocrinology. She is a member of the group practice Tsinman P.c. and her current practice location is 150 W Half Day Rd Ste 202, Buffalo Grove, Illinois. You can reach out to her office (for appointments etc.) via phone at (630) 566-9565.

Dr Inessa M Gelfand is licensed to practice in Illinois (license number 036-115321) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1528080637.

Contact Information

Dr Inessa M Gelfand, MD
150 W Half Day Rd Ste 202,
Buffalo Grove, IL 60089-6591
(630) 566-9565
(630) 566-9565

Map and Direction




Physician's Profile

Full NameDr Inessa M Gelfand
GenderFemale
SpecialityEndocrinology
Experience28 Years
Location150 W Half Day Rd Ste 202, Buffalo Grove, Illinois
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Inessa M Gelfand attended and graduated from Rush Medical College Of Rush University in 1998
  NPI Data:
  • NPI Number: 1528080637
  • Provider Enumeration Date: 07/25/2006
  • Last Update Date: 07/17/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 1355345406
  • Enrollment ID: I20060905000259

Medical Identifiers

Medical identifiers for Dr Inessa M Gelfand such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1528080637NPI-NPPES
036-115321MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 036-115321 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Advanced Home Health Services, IncNorthbrook, ILHome health agency
Endeavor Health Clinical OperationsEvanston, ILHospital
Advocate Condell Medical CenterLibertyville, ILHospital
Advocate Good Shepherd HospitalBarrington, ILHospital
Northwest Community Hospital 1Arlington heights, ILHospital
Northwestern Lake Forest HospitalLake forest, ILHospital

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. Dr Inessa M Gelfand allows following entities to bill medicare on her behalf.
Entity NameTsinman P.C.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679779581
PECOS PAC ID: 5890896005
Enrollment ID: O20070718000319
Entity NameImg Endocrinology PLLC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629881495
PECOS PAC ID: 4385160258
Enrollment ID: O20250424000899

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. Dr Inessa M Gelfand 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
Dr Inessa M Gelfand, MD
150 W Half Day Rd Ste 202,
Buffalo Grove, IL 60089-6591

Ph: (630) 566-9565		Dr Inessa M Gelfand, MD
150 W Half Day Rd Ste 202,
Buffalo Grove, IL 60089-6591

Ph: (630) 566-9565

Reviews and Comments


Internal Medicine Doctors in Buffalo Grove, IL

Mr. Mark J Charman, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 600 W Lake Cook Rd, Buffalo Grove, IL 60089
Phone: 847-632-1880    Fax: 847-520-6095
Olga Zarkh, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 135 N Arlington Heights Rd Ste 160, Buffalo Grove, IL 60089
Phone: 847-818-7700    Fax: 847-818-1718
Khrystyna Deka, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 650 W Lake Cook Rd, Buffalo Grove, IL 60089
Phone: 847-459-1160    Fax: 847-459-8692
Dr. Gregory O'neal Clark, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 355 W Dundee Rd Ste 110, Buffalo Grove, IL 60089
Phone: 847-541-4878    Fax: 847-520-0500
Dr. Sarah Cathleen Peterson, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 15 S Mchenry Rd, Buffalo Grove, IL 60089
Phone: 847-618-0326    Fax: 847-618-0762
Dr. Chuck Richard Vrasich, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 15 S Mchenry Rd, Buffalo Grove, IL 60089
Phone: 847-618-0351    Fax: 847-618-0766
Dr. Susan E Nelson, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 15 S Mchenry Rd, Buffalo Grove, IL 60089
Phone: 847-618-0351    Fax: 847-618-0766

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.

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