MARK I WILLIAMS MD
NPI 1235284225
Radiology - Diagnostic Radiology in Bakersfield, CA

Active since January 23, 2007PECOS EnrolledAccepts Medicare Assignment
92.58/100
CMS Quality Rating
1817 TRUXTUN AVE, TRUXTUN RADIOLOGY MEDICAL GROUP LP, BAKERSFIELD, CA 93301(661) 325-6800(661) 325-4734 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mark I Williams Md NPPES

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

MARK I WILLIAMS MD (NPI 1235284225) is an individual diagnostic radiology provider in Bakersfield, California, licensed in California (G60262) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1984).

NPPES Registry Identity

NPI1235284225
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameMARK I WILLIAMSCredential: MD
Location Address1817 TRUXTUN AVE, TRUXTUN RADIOLOGY MEDICAL GROUP LPBakersfield, CA 93301
Mailing Address1817 Truxtun Ave, Truxtun Radiology Medical Group LpBakersfield, CA 93301 · (661) 325-6800 · Fax (661) 325-4734
Fax(661) 325-4734
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1984
Enumeration DateJanuary 23, 2007
Last NPPES UpdateJuly 8, 2007
NPI 1235284225 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License Licensed in CA · G60262
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
1817 TRUXTUN AVE, Bakersfield, CA 93301

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

Mark I Williams 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 ID7416019484
PECOS Enrollment IDI20081230000002
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 46

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.

X-ray of chest, 2 views 71046
A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.
1,342 services1,227 patients
X-ray of knee, 3 views 73562
An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.
579 services413 patients
X-ray of shoulder, minimum of 2 views 73030
An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.
405 services334 patients
X-ray of lower and sacral spine, minimum of 4 views 72110
An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.
308 services307 patients
X-ray of hand, minimum of 3 views 73130
An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.
282 services192 patients
X-ray of foot, minimum of 3 views 73630
An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.
258 services202 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93301 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
$91.09 typical visit price
range $59.26 – $178.09
Typical copayment $22.77 (range $14.81 – $44.52)
Most-billed visit code 99203
Established Patient
$73.67 typical visit price
range $19.34 – $145.64
Typical copayment $18.41 (range $4.83 – $36.41)
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.

92.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality75
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 5

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

Radiology (Diagnostic Radiology)
1817 TRUXTUN AVE
BAKERSFIELD, CA 93301
Radiology (Diagnostic Radiology)
1817 TRUXTUN AVE
BAKERSFIELD, CA 93301
Clinic/Center (Radiology)
1817 TRUXTUN AVE
BAKERSFIELD, CA 93301
Radiology (Neuroradiology)
1817 TRUXTUN AVE, TRUXTUN RADIOLOGY MEDICAL GROUP LP
BAKERSFIELD, CA 93301
Radiology (Diagnostic Radiology)
1817 TRUXTUN AVE, TRUXTUN RADIOLOGY MEDICAL GROUP LP
BAKERSFIELD, CA 93301

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 Mark Williams's NPI number?

The NPI number for Mark Williams is 1235284225. It was assigned to this individual provider in the NPPES registry on January 23, 2007.

Where is Mark Williams located?

Mark Williams practices at 1817 Truxtun Ave Truxtun Radiology Medical Group LP, Bakersfield, CA 93301. The listed phone number is (661) 325-6800.

What is Mark Williams's specialty?

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

Is Mark Williams enrolled in Medicare?

Yes. Mark Williams 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.

When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.