Dr Mark Wayne Williams Sr, MD, PHD is a medicare enrolled "Surgery" physician in Muscatine, Iowa. He went to University Of North Carolina At Chapel Hill School Of Medicine and graduated in 2000 and has 26 years of diverse experience with area of expertise as General Surgery. He is a member of the group practice Unity Healthcare and his current practice location is
1518 Mulberry Ave Ste 102, Muscatine, Iowa. You can reach out to his office (for appointments etc.) via phone at
(563) 264-4112.
Dr Mark Wayne Williams Sr is licensed to practice in Iowa (license number 49587) 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 1417986001.
Physician's Profile
| Full Name | Dr Mark Wayne Williams Sr |
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| Gender | Male |
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| Speciality | General Surgery |
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| Experience | 26 Years |
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| Location | 1518 Mulberry Ave Ste 102, Muscatine, Iowa |
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| Accepts Medicare Assignments | Yes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance. |
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Medical Education and Training:
- Dr Mark Wayne Williams Sr attended and graduated from University Of North Carolina At Chapel Hill School Of Medicine in 2000
NPI Data:
- NPI Number: 1417986001
- Provider Enumeration Date: 07/03/2006
- Last Update Date: 11/14/2025
Medicare PECOS Information:
- PECOS PAC ID: 9638182314
- Enrollment ID: I20220603000531
Medical Identifiers
Medical identifiers for Dr Mark Wayne Williams Sr such as npi, medicare ID, medicare PIN, medicaid, etc.
| Identifier | Type | State | Issuer |
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| 1417986001 | NPI | - | NPPES |
| 036116745 | Medicaid | IL | |
Medical Taxonomies and Licenses
| Taxonomy | Type | License (State) | Status |
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| 208600000X | Surgery | 49587 (Iowa) | Primary |
| 208600000X | Surgery | TL25609 (South Carolina) | Secondary |
Medical Facilities Affiliation
Group Practice Association
| Group Practice Name | Group PECOS PAC ID | No. of Members |
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| Unity Healthcare | 8224931548 | 60 |
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 Mark Wayne Williams Sr allows following entities to bill medicare on his behalf.
| Entity Name | Iowa Physicians Clinic Medical Foundation |
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| Entity Type | Part B Supplier - Clinic/group Practice |
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| Entity Identifiers | NPI Number: 1366425274
PECOS PAC ID: 8729992318
Enrollment ID: O20031118000363 |
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| Entity Name | Unity Healthcare |
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| Entity Type | Part B Supplier - Clinic/group Practice |
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| Entity Identifiers | NPI Number: 1629122742
PECOS PAC ID: 8224931548
Enrollment ID: O20040202000524 |
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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 Mark Wayne Williams Sr 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 Address | Practice Location Address |
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Dr Mark Wayne Williams Sr, MD, PHD
1518 Mulberry Ave Ste 102,
Muscatine, IA 52761-3433
Ph: (563) 262-4112 | Dr Mark Wayne Williams Sr, MD, PHD
1518 Mulberry Ave Ste 102,
Muscatine, IA 52761-3433
Ph: (563) 264-4112 |
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