MALCOLM EDWARD WILLIAMSON II MD
NPI 1144218991
Radiology - Diagnostic Radiology in Ocala, FL

Active since October 06, 2005PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
1818 SW 15TH AVE, OCALA, FL 34474(352) 671-4300(352) 671-4393 Get Directions Write a Review

NPPES record last updated: October 1, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Malcolm Edward Williamson Ii Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MALCOLM EDWARD WILLIAMSON II MD (NPI 1144218991) is an individual diagnostic radiology provider in Ocala, Florida, licensed in Florida (ME72868) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Adventhealth Ocala, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1144218991
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameMALCOLM EDWARD WILLIAMSON IICredential: MD
Location Address1818 SW 15TH AVEOcala, FL 34474-3548
Mailing AddressPo Box 6200Ocala, FL 34478-6200 · (352) 671-4300 · Fax (352) 671-4393
Fax(352) 671-4393
Sole ProprietorNo
Medical School CMSOtherGraduated 1995
Enumeration DateOctober 6, 2005
Last NPPES UpdateOctober 1, 2025
NPPES CertifiedOctober 1, 2025
NPI 1144218991 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Licenses Licensed in FL · ME72868 Licensed in VA · 0101284099 Licensed in GA · 98541
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Also ListedRadiology · NeuroradiologyTaxonomy 2085N0700X · License 0101284099 (VA), ME72868 (FL)
1818 SW 15TH AVE, Ocala, FL 34474

Secondary Practice Locations 3

Location 1400 Health Park BlvdSt Augustine, FL 32086-5784 · Phone (904) 819-5155
Location 2743 Spring St NEGainesville, GA 30501-3715 · Phone (770) 219-9000
Location 32300 Opitz BlvdWoodbridge, VA 22191-3311 · Phone (703) 523-1199

Other Identifiers 1

Medicaid258744100FL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Malcolm Edward Williamson Ii Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092751396
PECOS Enrollment IDI20050707000829, I20210528002116, I20251029003323
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 88

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967
Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.
12,160 services137 patients
X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
1,111 services1,010 patients
Injection, gadobenate dimeglumine (multihance), per ml A9577
Gadobenate Dimeglumine (MultiHance) is a contrast agent used in MRI scans. Injected into your body, it helps to enhance the quality of the images captured during the scan. It aids in highlighting differences between normal and abnormal tissues, making diagnosis easier and more accurate.
810 services52 patients
Ct scan head or brain without contrast 70450
A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.
493 services477 patients
Ct scan of abdomen and pelvis with contrast 74177
A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.
244 services241 patients
Ct scan of abdomen and pelvis without contrast 74176
A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.
208 services203 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Adventhealth Ocala

Acute Care Hospitals · Ocala, FL
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number100062
Location1500 SW 1st AveOcala, FL 34474 · Marion County
Emergency services Birthing friendly

Marion Communtiy Hospital

Acute Care Hospitals · Ocala, FL
1/5 CMS rating
OwnershipProprietary
CMS Certification Number100212
Location1431 SW 1st AveOcala, FL 34471 · Marion County
Emergency services

Tampa General Hospital Crystal River

Acute Care Hospitals · Crystal River, FL
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100249
Location6201 N Suncoast BlvdCrystal River, FL 34428 · Citrus County

Northeast Georgia Medical Center, Inc

Acute Care Hospitals · Gainesville, GA
3/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number110029
Location743 Spring StreetGainesville, GA 30501 · Hall County
Emergency services Birthing friendly

Sentara Northern Virginia Medical Center

Acute Care Hospitals · Woodbridge, VA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490113
Location2300 Opitz BoulevardWoodbridge, VA 22191 · Prince William County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 34474 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$87.62 typical visit price
range $56.00 – $171.84
Typical copayment $21.90 (range $14.00 – $42.96)
Most-billed visit code 99203
Established Patient
$70.04 typical visit price
range $17.57 – $139.16
Typical copayment $17.51 (range $4.39 – $34.79)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality100
Improvement Activities40

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Radiology (Diagnostic Radiology)
1818 SW 15TH AVE
OCALA, FL 34474
Radiology (Diagnostic Radiology)
1818 SW 15TH AVE
OCALA, FL 34474
Physician Assistant
1818 SW 15TH AVE
OCALA, FL 34474
Radiology (Diagnostic Radiology)
1818 SW 15TH AVE
OCALA, FL 34474
Radiology (Vascular & Interventional Radiology)
1818 SW 15TH AVE
OCALA, FL 34474
Radiology (Diagnostic Radiology)
1818 SW 15TH AVE
OCALA, FL 34474
Radiology (Vascular & Interventional Radiology)
1818 SW 15TH AVE
OCALA, FL 34474
Radiology (Diagnostic Radiology)
1818 SW 15TH AVE
OCALA, FL 34474

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Malcolm Williamson's NPI number?

The NPI number for Malcolm Williamson is 1144218991. It was assigned to this individual provider in the NPPES registry on October 6, 2005.

Where is Malcolm Williamson located?

Malcolm Williamson practices at 1818 SW 15th Ave, Ocala, FL 34474. The listed phone number is (352) 671-4300.

What is Malcolm Williamson's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Malcolm Williamson enrolled in Medicare?

Yes. Malcolm Williamson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Malcolm Williamson affiliated with any hospitals?

According to CMS data, Malcolm Williamson is affiliated with Adventhealth Ocala, Marion Communtiy Hospital, Tampa General Hospital Crystal River, Northeast Georgia Medical Center, Inc and Sentara Northern Virginia Medical Center.

When was this NPI record last updated?

The NPPES record for Malcolm Williamson was last updated on October 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.