Mark I Williams, MD - Medicare Diagnostic Radiology in Bakersfield, CA

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Mark I Williams, MD is a medicare enrolled "Radiology - Diagnostic Radiology" physician in Bakersfield, California. He went to University Of California, San Francisco School Of Medicine and graduated in 1984 and has 40 years of diverse experience with area of expertise as Diagnostic Radiology. He is a member of the group practice Kern Radiology Medical Group Inc and his current practice location is 1817 Truxtun Ave, Truxtun Radiology Medical Group Lp, Bakersfield, California. You can reach out to his office (for appointments etc.) via phone at (661) 325-6800.

Mark I Williams is licensed to practice in California (license number G60262) 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 1235284225.

Contact Information

Mark I Williams, MD
1817 Truxtun Ave, Truxtun Radiology Medical Group Lp,
Bakersfield, CA 93301
(661) 325-6800
(661) 325-4734

Map and Direction




Physician's Profile

Full NameMark I Williams
GenderMale
SpecialityDiagnostic Radiology
Experience40 Years
Location1817 Truxtun Ave, Bakersfield, 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:
  • Mark I Williams attended and graduated from University Of California, San Francisco School Of Medicine in 1984
  NPI Data:
  • NPI Number: 1235284225
  • Provider Enumeration Date: 01/23/2007
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 7416019484
  • Enrollment ID: I20081230000002

Medical Identifiers

Medical identifiers for Mark I Williams such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1235284225NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2085R0202XRadiology - Diagnostic Radiology G60262 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Kern Radiology Medical Group Inc721482646072

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. Mark I Williams allows following entities to bill medicare on his behalf.
Entity NameKern Radiology Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700821972
PECOS PAC ID: 7214826460
Enrollment ID: O20040315000421
Entity NameDiagnostic Radiological Imaging
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710931910
PECOS PAC ID: 4981680220
Enrollment ID: O20040626000471
Entity NameTruxtun Radiology Medical Group Lp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548265036
PECOS PAC ID: 5698714582
Enrollment ID: O20050429000546
Entity NamePronet Imaging Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528099488
PECOS PAC ID: 5890722755
Enrollment ID: O20050721000831
Entity NameBeverly Radiology Medical Group Iii
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1962457812
PECOS PAC ID: 3476466376
Enrollment ID: O20060221000914
Entity NameVallejo Open Mri Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164478277
PECOS PAC ID: 9133132046
Enrollment ID: O20060719000128
Entity NameStockton Diagnostic Imaging
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1356538201
PECOS PAC ID: 0749386894
Enrollment ID: O20070507000122
Entity NameSan Fernando Valley Interventional Radiology And Imaging Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1942350889
PECOS PAC ID: 3476651431
Enrollment ID: O20070614000478
Entity NameFresno Imaging Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1659456499
PECOS PAC ID: 2466553128
Enrollment ID: O20070724000813
Entity NameNorcal Imaging
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003965997
PECOS PAC ID: 7911099346
Enrollment ID: O20070815000403
Entity NameRadnet Medical Imaging - San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1548345382
PECOS PAC ID: 9830283761
Enrollment ID: O20070921000636
Entity NameEmeryville Advanced Imaging Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376597930
PECOS PAC ID: 3375637051
Enrollment ID: O20070926000354
Entity NameModesto Advanced Diagnostic Imaging Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1730133893
PECOS PAC ID: 1850336736
Enrollment ID: O20080313000323
Entity NameSanta Rosa Imaging Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689890444
PECOS PAC ID: 2567408859
Enrollment ID: O20100324000598

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. Mark I 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
Mark I Williams, MD
1817 Truxtun Ave, Truxtun Radiology Medical Group Lp,
Bakersfield, CA 93301

Ph: (661) 325-6800		Mark I Williams, MD
1817 Truxtun Ave, Truxtun Radiology Medical Group Lp,
Bakersfield, CA 93301

Ph: (661) 325-6800

Reviews and Comments


Radiology Doctors in Bakersfield, CA

Aida Karahmet, MD
Radiology
Medicare: Not Enrolled in Medicare
Practice Location: Truxtun Radiology Medical Group Lp, 1817 Truxtun Ave, Bakersfield, CA 93301
Phone: 661-325-6800    Fax: 661-325-4734
Dr. Alan Mortezaie, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 2301 Bahamas Dr, Bakersfield, CA 93309
Phone: 661-326-9600    Fax: 661-334-3065
Dr. Marcher Thompson, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 2620 Chester Ave, Bakersfield, CA 93301
Phone: 661-637-8100    
Dr. Nicolas James Andrews, M.D.
Radiology
Medicare: Not Enrolled in Medicare
Practice Location: 9602 Stockdale Hwy, Bakersfield, CA 93311
Phone: 661-633-5000    Fax: 661-633-2500
Dr. James Yiu-tin Ching, M.D.
Radiology
Medicare: Medicare Enrolled
Practice Location: 1700 Mount Vernon Ave, Kern Medical Center, Bakersfield, CA 93306
Phone: 661-326-2532    Fax: 661-326-2648
Dr. Arsalan Asad Siddiqui, M.D.
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 4500 Morning Dr Ste 202, Bakersfield, CA 93306
Phone: 951-550-2516    
David Gregory Suadi, DO
Radiology
Medicare: Accepting Medicare Assignments
Practice Location: 4000 Empire Dr Ste 100, Bakersfield, CA 93309
Phone: 661-631-8000    Fax: 661-631-8005

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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