James W Lock, MD - Medicare Internal Medicine in Walnut Grove, MS

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James W Lock, MD is a medicare enrolled "Internal Medicine - Hypertension Specialist" physician in Walnut Grove, Mississippi. He went to Meharry Medical College School Of Medicine and graduated in 1989 and has 37 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice East Central Mississippi Health Care Inc, Rh Hospitalist Medicine Of Jefferson Davis Llc and his current practice location is 199 Rimmer Street, Walnut Grove, Mississippi. You can reach out to his office (for appointments etc.) via phone at (601) 253-2733.

James W Lock is licensed to practice in Mississippi (license number 12628) 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 1063499002.

Contact Information

James W Lock, MD
199 Rimmer Street,
Walnut Grove, MS 39189-0370
(601) 253-2733
(601) 253-2733

Map and Direction




Physician's Profile

Full NameJames W Lock
GenderMale
SpecialityInternal Medicine
Experience37 Years
Location199 Rimmer Street, Walnut Grove, Mississippi
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:
  • James W Lock attended and graduated from Meharry Medical College School Of Medicine in 1989
  NPI Data:
  • NPI Number: 1063499002
  • Provider Enumeration Date: 12/30/2005
  • Last Update Date: 06/26/2014
  Medicare PECOS Information:
  • PECOS PAC ID: 3577542406
  • Enrollment ID: I20040715000296

Medical Identifiers

Medical identifiers for James W Lock such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1063499002NPI-NPPES
P00127232OtherRAILROAD MEDICARE
00116489MedicaidMS

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 12628 (Mississippi)Secondary
207RH0005XInternal Medicine - Hypertension Specialist 12628 (Mississippi)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Jefferson Davis General HospitalPrentiss, MSHospital
S E Lackey Memorial HospitalForest, MSHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
East Central Mississippi Health Care Inc094110371716
Rh Hospitalist Medicine Of Jefferson Davis Llc61032651457

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. James W Lock allows following entities to bill medicare on his behalf.
Entity NameEast Central Mississippi Health Care Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1255387619
PECOS PAC ID: 0941103717
Enrollment ID: O20040129000363
Entity NameKeystone Medical Services Of Ms Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174691059
PECOS PAC ID: 7618075177
Enrollment ID: O20070606000447
Entity NameKeystone Hospitalist Services Of Ms Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1932447968
PECOS PAC ID: 7517103864
Enrollment ID: O20130411000527
Entity NameCorrect Care, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1215987441
PECOS PAC ID: 8628980992
Enrollment ID: O20131122000662
Entity NameRh Emergency Medicine Of Marion General Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1841064110
PECOS PAC ID: 0648623744
Enrollment ID: O20240124004763
Entity NameRh Hospitalist Medicine Of Walthall General Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1053173237
PECOS PAC ID: 2365881091
Enrollment ID: O20240415002150
Entity NameRh Emergency Medicine Of Jefferson Davis Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356103527
PECOS PAC ID: 4789023201
Enrollment ID: O20240417001265
Entity NameRh Emergency Medicine Of Walthall General Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1336901511
PECOS PAC ID: 7517306830
Enrollment ID: O20240419001361
Entity NameRh Hospitalist Medicine Of Jefferson Davis Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174385355
PECOS PAC ID: 6103265145
Enrollment ID: O20240423003254

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. James W Lock 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
James W Lock, MD
Po Box 370,
Walnut Grove, MS 39189-0370

Ph: (601) 253-2733		James W Lock, MD
199 Rimmer Street,
Walnut Grove, MS 39189-0370

Ph: (601) 253-2733

Reviews and Comments


Internal Medicine Doctors in Walnut Grove, MS


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.