Dr Atul T Roy, MD - Medicare Nephrology in Merced, CA

Dr Atul T Roy, MD is a medicare enrolled "Internal Medicine - Nephrology" physician in Merced, California. He graduated from medical school in 1982 and has 42 years of diverse experience with area of expertise as Nephrology. He is a member of the group practice The Nephrology Group Inc and his current practice location is 1140 Olivewood Dr, Merced, California. You can reach out to his office (for appointments etc.) via phone at (209) 725-2121.

Dr Atul T Roy is licensed to practice in California (license number A44403) 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 1467496505.

Contact Information

Dr Atul T Roy, MD
1140 Olivewood Dr,
Merced, CA 95348-1210
(209) 725-2121
(209) 725-2123

Map and Direction




Physician's Profile

Full NameDr Atul T Roy
GenderMale
SpecialityNephrology
Experience42 Years
Location1140 Olivewood Dr, Merced, California
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:
  • Dr Atul T Roy graduated from medical school in 1982
  NPI Data:
  • NPI Number: 1467496505
  • Provider Enumeration Date: 06/16/2006
  • Last Update Date: 11/09/2015
  Medicare PECOS Information:
  • PECOS PAC ID: 5193621076
  • Enrollment ID: I20090615000583

Medical Identifiers

Medical identifiers for Dr Atul T Roy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1467496505NPI-NPPES
GR0082110MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RN0300XInternal Medicine - Nephrology A44403 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Satellite Dialysis MercedMerced, CADialysis facility
Los Banos Dialysis CenterLos banos, CADialysis facility
Atwater Dialysis CenterAtwater, CADialysis facility
Satellite Dialysis TurlockTurlock, CADialysis facility
Mercy Medical CenterMerced, CAHospital
Memorial Hospital Los BanosLos banos, CAHospital
John C Fremont Healthcare DistrictMariposa, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The Nephrology Group Inc468876726242

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 Atul T Roy allows following entities to bill medicare on his behalf.
Entity NameCentral Valley Nephrology Medical Associates Incorporated
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700827516
PECOS PAC ID: 4385540269
Enrollment ID: O20031210001086
Entity NameJohn C Fremont Healthcare District
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750504270
PECOS PAC ID: 5890689533
Enrollment ID: O20040212000193
Entity NameThe Nephrology Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1205906229
PECOS PAC ID: 4688767262
Enrollment ID: O20070912000803

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 Atul T Roy 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 Atul T Roy, MD
1140 Olivewood Dr,
Merced, CA 95348-1210

Ph: (209) 725-2121
Dr Atul T Roy, MD
1140 Olivewood Dr,
Merced, CA 95348-1210

Ph: (209) 725-2121

Reviews and Comments


Internal Medicine Doctors in Merced, CA

Nicolas R Delapena, M.D.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 3389 G St, Suite A, Merced, CA 95340
Phone: 209-722-1205    Fax: 209-722-7833
Rajapuram Ravindra Kumar, MD
Nephrology
Medicare: Medicare Enrolled
Practice Location: 780 W Olive Ave, Ste 103, Merced, CA 95348
Phone: 209-723-0783    Fax: 209-723-9452
Juan Carlos Rodriguez, M.D.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 3393 G St Ste D, Merced, CA 95340
Phone: 209-230-9065    
James Gerard Reid, M.D.
Nephrology
Medicare: Medicare Enrolled
Practice Location: 3385 G St, Suite A, Merced, CA 95340
Phone: 209-725-3122    Fax: 209-725-3128
Harleen Aujla, M.D.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 3351 M St Ste 125, Merced, CA 95348
Phone: 209-723-1020    
Dr. Mark Altchek, M.D.
Nephrology
Medicare: Not Enrolled in Medicare
Practice Location: 1343 W Main St, Merced, CA 95340
Phone: 209-725-1060    Fax: 209-725-1064
Parminder Singh Sidhu, MD
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 333 Mercy Ave, Mercy Medical Center, Merced, CA 95340
Phone: 209-564-5000    

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).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.