Dr Carl Marc Williams, MD - Medicare Critical Care (intensivists) in Fort Wayne, IN

Dr Carl Marc Williams, MD is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Fort Wayne, Indiana. He went to University Of Maryland School Of Medicine and graduated in 1995 and has 29 years of diverse experience with area of expertise as Critical Care (intensivists). He is a member of the group practice Parkview Health System Inc, Mchs Hospitals Inc, Mercy Health System Corporation and his current practice location is 11104 Parkview Circle Dr, Fort Wayne, Indiana. You can reach out to his office (for appointments etc.) via phone at (260) 373-9700.

Dr Carl Marc Williams is licensed to practice in Indiana (license number 01064129A) 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 1003971490.

Contact Information

Dr Carl Marc Williams, MD
11104 Parkview Circle Dr,
Fort Wayne, IN 46845-1672
(260) 373-9700
(260) 373-9740

Map and Direction




Physician's Profile

Full NameDr Carl Marc Williams
GenderMale
SpecialityCritical Care (intensivists)
Experience29 Years
Location11104 Parkview Circle Dr, Fort Wayne, Indiana
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 Carl Marc Williams attended and graduated from University Of Maryland School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1003971490
  • Provider Enumeration Date: 12/26/2006
  • Last Update Date: 08/29/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 6002700820
  • Enrollment ID: I20070810000526

Medical Identifiers

Medical identifiers for Dr Carl Marc Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003971490NPI-NPPES
2051760OtherPAHIGHMARK BLUE SHIELD
200869120MedicaidIN
1003971490MedicaidWI
1021751160001MedicaidPA
000000528048OtherINANTHEM PROVIDER NUMBER
823273OtherPAFIRST PRIORITY HEALTH
PENDINGOtherINPHCS PID NUMBER

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine 016380 (Maine)Secondary
207RC0200XInternal Medicine - Critical Care Medicine MD434996 (Pennsylvania)Secondary
207RC0200XInternal Medicine - Critical Care Medicine 60181-20 (Wisconsin)Secondary
207RC0200XInternal Medicine - Critical Care Medicine 01064129A (Indiana)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 016380 (Maine)Secondary
207RP1001XInternal Medicine - Pulmonary Disease MD434996 (Pennsylvania)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 60181 (Wisconsin)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 60181-20 (Wisconsin)Secondary
207RP1001XInternal Medicine - Pulmonary Disease 01064129A (Indiana)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Parkview Regional Medical CenterFort wayne, INHospital
Ascension St Clares HospitalWeston, WIHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Parkview Health System Inc21633369671192
Mchs Hospitals Inc56980711731030
Mercy Health System Corporation7416860440475

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 Carl Marc Williams allows following entities to bill medicare on his behalf.
Entity NameParkview Health System Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1932130952
PECOS PAC ID: 2163336967
Enrollment ID: O20031117000288

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 Carl Marc Williams 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 Carl Marc Williams, MD
3400 Ministry Pkwy,
Weston, WI 54476-5220

Ph: (715) 393-1000
Dr Carl Marc Williams, MD
11104 Parkview Circle Dr,
Fort Wayne, IN 46845-1672

Ph: (260) 373-9700

Reviews and Comments


Internal Medicine Doctors in Fort Wayne, IN

Dr. Dustin M Thomas, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 11108 Parkview Plaza Dr, Fort Wayne, IN 46845
Phone: 260-266-5700    Fax: 260-266-5910
Ahmad Alhariri, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 11109 Parkview Plaza Dr, Fort Wayne, IN 46845
Phone: 260-266-2020    
Dr. Anuradha G Bommakanti, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 7950 W Jefferson Blvd, Fort Wayne, IN 46804
Phone: 260-435-7001    
Eileen Jill Ramos Muzzillo, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 4402 E State Blvd, Fort Wayne, IN 46815
Phone: 260-425-5600    Fax: 260-425-5605
John T Ducker, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 7836 W Jefferson Blvd, Suite 101, Fort Wayne, IN 46804
Phone: 260-494-3484    Fax: 260-969-0188
Mr. Kenneth A Smith, MD
Pulmonary Disease
Medicare: Medicare Enrolled
Practice Location: 1234 East Dupont Road, Suite 5, Fort Wayne, IN 46825
Phone: 260-489-1666    Fax: 260-489-3255

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.