Dr Nathan Robertson, MD - Medicare Internal Medicine in Saint Louis, MO

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Dr Nathan Robertson, MD is a medicare enrolled "Internal Medicine" physician in Saint Louis, Missouri. He went to Saint Louis University School Of Medicine and graduated in 2014 and has 10 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Mercy Hospitals East Communities, Mercy Clinic Adult Hospitalists - St. Louis, Llc and his current practice location is 621 S New Ballas Rd Ste 112a, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 251-6339.

Dr Nathan Robertson is licensed to practice in Missouri (license number 2017013105) 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 1124439252.

Contact Information

Dr Nathan Robertson, MD
621 S New Ballas Rd Ste 112a,
Saint Louis, MO 63141-8252
(314) 251-6339
(314) 251-4564

Map and Direction




Physician's Profile

Full NameDr Nathan Robertson
GenderMale
SpecialityInternal Medicine
Experience10 Years
Location621 S New Ballas Rd Ste 112a, Saint Louis, Missouri
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 Nathan Robertson attended and graduated from Saint Louis University School Of Medicine in 2014
  NPI Data:
  • NPI Number: 1124439252
  • Provider Enumeration Date: 05/12/2014
  • Last Update Date: 11/18/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 2769784222
  • Enrollment ID: I20170615001038

Medical Identifiers

Medical identifiers for Dr Nathan Robertson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1124439252NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 2017013105 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Hospital St LouisSaint louis, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Mercy Hospitals East Communities165827681191
Mercy Clinic Adult Hospitalists - St. Louis, Llc6002809944127

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 Nathan Robertson allows following entities to bill medicare on his behalf.
Entity NameMercy Hospitals East Communities
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1851431738
PECOS PAC ID: 1658276811
Enrollment ID: O20031218000107
Entity NameMercy Clinic Adult Hospitalists - St. Louis, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841235108
PECOS PAC ID: 6002809944
Enrollment ID: O20040406001004
Entity NameMercy Clinic Adult Hospitalists - Washington, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891943429
PECOS PAC ID: 3577630540
Enrollment ID: O20080917000782
Entity NameSt Anthonys Physician Organization Hospitalist Services Lc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407216336
PECOS PAC ID: 5092980656
Enrollment ID: O20111208000771
Entity NameMercy Clinic Adult Hospitalists Jefferson Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1083052492
PECOS PAC ID: 8628205598
Enrollment ID: O20131220001798
Entity NameMercy Hospital Lincoln
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1962808733
PECOS PAC ID: 5193040020
Enrollment ID: O20150623002541

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 Nathan Robertson 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 Nathan Robertson, MD
621 S New Ballas Rd Ste 112a,
Saint Louis, MO 63141-8252

Ph: (314) 251-6339		Dr Nathan Robertson, MD
621 S New Ballas Rd Ste 112a,
Saint Louis, MO 63141-8252

Ph: (314) 251-6339

Reviews and Comments


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Dr. Erin Leigh Dyer, MD
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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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