Dr Shamanthy Ratnasingam, MD - Medicare Internal Medicine in Middletown, NY

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Dr Shamanthy Ratnasingam, MD is a medicare enrolled "Hospitalist" physician in Middletown, New York. She graduated from medical school in 2016 and has 10 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Central Suffolk Hospital, Southwest Suffolk Medical Pc, Nicholas H Noyes Memorial Hospital, Crystal Run Healthcare Physicians Llp, St James Hospital and her current practice location is 155 Crystal Run Rd, Middletown, New York. You can reach out to her office (for appointments etc.) via phone at (845) 703-6999.

Dr Shamanthy Ratnasingam is licensed to practice in New York (license number 299495) 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 1184076507.

Contact Information

Dr Shamanthy Ratnasingam, MD
155 Crystal Run Rd,
Middletown, NY 10941-4028
(845) 703-6999
(845) 703-6297

Map and Direction




Physician's Profile

Full NameDr Shamanthy Ratnasingam
GenderFemale
SpecialityInternal Medicine
Experience10 Years
Location155 Crystal Run Rd, Middletown, New York
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 Shamanthy Ratnasingam graduated from medical school in 2016
  NPI Data:
  • NPI Number: 1184076507
  • Provider Enumeration Date: 07/09/2016
  • Last Update Date: 06/21/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 7113257643
  • Enrollment ID: I20190926002012

Medical Identifiers

Medical identifiers for Dr Shamanthy Ratnasingam such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1184076507NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208M00000XHospitalist 299495 (New York)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Good Samaritan Hospital Medical CenterWest islip, NYHospital
St Anthony Community HospitalWarwick, NYHospital
Nicholas H Noyes Memorial HospitalDansville, NYHospital
Peconic Bay Medical CenterRiverhead, NYHospital
St James HospitalHornell, NYHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Central Suffolk Hospital498150808294
Southwest Suffolk Medical Pc0244396349204
Nicholas H Noyes Memorial Hospital3072505536133
Crystal Run Healthcare Physicians Llp6901792696366
St James Hospital0345154480130

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 Shamanthy Ratnasingam allows following entities to bill medicare on her behalf.
Entity NameGuthrie Medical Group PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134178635
PECOS PAC ID: 6002728656
Enrollment ID: O20031103000220
Entity NameSt James Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013985399
PECOS PAC ID: 0345154480
Enrollment ID: O20031113000649
Entity NameCentral Suffolk Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043402050
PECOS PAC ID: 4981508082
Enrollment ID: O20031120000840
Entity NameCrystal Run Healthcare Physicians LLP
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1952376410
PECOS PAC ID: 6901792696
Enrollment ID: O20040227000791
Entity NameNicholas H Noyes Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982625661
PECOS PAC ID: 3072505536
Enrollment ID: O20040402000492
Entity NameCayuga Medical Associates PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679525455
PECOS PAC ID: 6709897960
Enrollment ID: O20060601000199
Entity NameSouthwest Suffolk Medical PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104096049
PECOS PAC ID: 0244396349
Enrollment ID: O20090225000297
Entity NameIcahn School of Medicine at Mount Sinai
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477932275
PECOS PAC ID: 2264691070
Enrollment ID: O20150811003333

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 Shamanthy Ratnasingam 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 Shamanthy Ratnasingam, MD
1000 Montauk Hwy,
West Islip, NY 11795-4927

Ph: (631) 376-3000		Dr Shamanthy Ratnasingam, MD
155 Crystal Run Rd,
Middletown, NY 10941-4028

Ph: (845) 703-6999

Reviews and Comments


Hospitalist Doctors in Middletown, NY

Niranjan K Patel, MD
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 155 Crystal Run Rd, Middletown, NY 10941
Phone: 845-703-6999    Fax: 845-703-6297
Ibtesam Khan, D.O.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 707 E Main St, Middletown, NY 10940
Phone: 845-333-1000    
Dr. Sumeet Smotra, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 155 Crystal Run Rd, Middletown, NY 10941
Phone: 845-703-6999    Fax: 845-703-6297
Dr. Khin May Myat, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 707 E Main St, Middletown, NY 10940
Phone: 845-333-3370    Fax: 845-333-3372
Kevin Joseph, DO
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 707 E Main St, Middletown, NY 10940
Phone: 845-333-7373    
Suleman Khawaja, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 155 Crystal Run Rd, Middletown, NY 10941
Phone: 845-703-6999    Fax: 845-703-6264
Miss Nadia Muhammad Mustafa, M.D
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 707 E Main St, Middletown, NY 10940
Phone: 845-333-3370    Fax: 845-333-3372

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.