DR. MARK ALEXANDER WILLIAMS M.D.
NPI 1952446015
Pathology - Anatomic Pathology & Clinical Pathology in Richmond, VA

Q: What is Mark Williams's NPI number?

The NPI number for Mark Williams is 1952446015. It was assigned to this individual provider in the NPPES registry on February 20, 2007.

Q: What is Mark Williams's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on August 1, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.

Active since February 20, 2007PECOS EnrolledAccepts Medicare Assignment

5801 BREMO RD, RICHMOND, VA 23226(804) 281-8100 Get Directions Write a Review

NPPES record last updated: August 1, 2011. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Mark Alexander Williams M.d. NPPES

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

DR. MARK ALEXANDER WILLIAMS M.D. (NPI 1952446015) is an individual anatomic pathology & clinical pathology provider in Richmond, Virginia, licensed in Virginia (0101237794) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Bon Secours St Marys Hospital, and is a graduate of University Of Virginia School Of Medicine (2007).

NPPES Registry Identity

NPI1952446015

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameDR. MARK ALEXANDER WILLIAMSCredential: M.D.

Location Address5801 BREMO RDRichmond, VA 23226-1907

Mailing AddressPo Box 5468Martinsville, VA 24115-5468

Phone(804) 281-8100

Sole ProprietorNo

Medical School CMSUniversity Of Virginia School Of MedicineGraduated 2007

Enumeration DateFebruary 20, 2007

Last NPPES UpdateAugust 1, 2011

✔ NPI 1952446015 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

License✔ Licensed in VA · 0101237794

Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

5801 BREMO RD, Richmond, VA 23226

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Other Identifiers 3

Medicare PIN013928M44VA

Medicaid1952446015VA

OtherP00413110Railroad Medicare

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

Dr. Mark Alexander Williams M.d. 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 ID5294836201

PECOS Enrollment IDI20221216000002

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 17

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

1,691 services916 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

267 services74 patients

Pathology examination of tissue using a microscope, moderately high complexity 88307

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

214 services120 patients

Special stained specimen slides to examine tissue, initial procedure 88342

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

146 services130 patients

Microscopic genetic analysis of tumor, manual 88360

Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.

130 services38 patients

Pathology examination of tissue using a microscope, moderately low complexity 88304

A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.

97 services86 patients

Cell examination of specimen, selective cellular enhancement technique 88112

Cell examination of a specimen using selective cellular enhancement technique is a lab process that improves the visibility of certain cells in a sample. It helps in identifying abnormalities or diseases. The process is non-invasive, safe, and aids in accurate diagnosis.

79 services76 patients

Preparation of tissue for examination by removing any calcium present 88311

This procedure involves treating tissue samples to remove any calcium, which can interfere with the examination. The tissue is soaked in a special solution that safely dissolves the calcium, leaving the tissue intact for accurate analysis. This helps in making precise diagnoses.

53 services41 patients

Blood smear interpretation by physician with written report 85060

Blood smear interpretation is a lab test where your doctor examines a sample of your blood under a microscope. They look for abnormalities in your blood cells which can help diagnose various conditions. You'll receive a written report of the findings.

52 services45 patients

Evaluation of fine needle aspirate with interpretation and report 88173

This procedure involves using a thin needle to collect a small sample from an abnormal area or lump. The sample is then examined under a microscope to identify any potential issues. A report of the findings is provided for further analysis.

52 services41 patients

Pathology examination of specimen during surgery, first tissue block 88331

A pathology examination during surgery involves the immediate analysis of a removed tissue sample. This helps the surgeon make decisions during your operation. The "first tissue block" refers to the initial sample examined. It's a vital step to ensure your health.

44 services23 patients

Examination of archival tissue for genetic analysis 88363

Examination of archival tissue for genetic analysis involves studying previously collected tissue samples. This process helps detect any genetic alterations that may be linked to certain diseases. It's a crucial step in understanding your health and planning appropriate treatments.

44 services39 patients

Evaluation of fine needle aspirate 88172

Evaluation of fine needle aspirate is a diagnostic procedure where a thin needle is used to collect cells from a lump or mass. This sample is then examined under a microscope to determine the nature of the lump, whether it's benign (non-cancerous) or malignant (cancerous).

41 services30 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.

36 services19 patients

Pathology examination of tissue using a microscope, high complexity 88309

A high complexity pathology examination involves studying body tissue under a microscope to identify any abnormalities. This intricate process helps in diagnosing various conditions and deciding on the best treatment plan.

32 services30 patients

Special stained specimen slides to identify organisms including interpretation and report 88312

This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.

22 services17 patients

Pathology cytologic examination of specimen during surgery, initial site 88333

A pathology cytologic examination during surgery involves taking a small sample of cells from the initial site of concern. This sample is then examined under a microscope by a pathologist to check for any abnormal or disease-causing cells. This helps guide the ongoing surgical procedure.

21 services21 patients

Hospital Affiliations CMS Care Compare 5

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

Bon Secours St Marys Hospital

Acute Care Hospitals · Richmond, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number490059

Location5801 Bremo RdRichmond, VA 23226 · Richmond City County

Emergency services Birthing friendly

Bon Secours Southside Medical Center

Acute Care Hospitals · Petersburg, VA

2/5 CMS rating

OwnershipProprietary

CMS Certification Number490067

Location200 Medical Park BoulevardPetersburg, VA 23805 · Petersburg City County

Emergency services Birthing friendly

Bon Secours Memorial Regional Medical Center

Acute Care Hospitals · Mechanicsville, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number490069

Location8260 Atlee RoadMechanicsville, VA 23116 · Hanover County

Emergency services Birthing friendly

Cjw Medical Center

Acute Care Hospitals · Richmond, VA

4/5 CMS rating

OwnershipProprietary

CMS Certification Number490112

Location7101 Jahnke RoadRichmond, VA 23235 · Chesterfield County

Emergency services

Bon Secours St Francis Medical Center

Acute Care Hospitals · Midlothian, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number490136

Location13710 St Francis BoulevardMidlothian, VA 23114 · Chesterfield County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 23226 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

$129.04 typical visit price

range $56.19 – $170.30

Typical copayment $32.26 (range $14.04 – $42.57)

Most-billed visit code 99204

Established Patient

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

DR. ENJANA BYLYKBASHI MD

Emergency Medicine

5801 BREMO RD
RICHMOND, VA 23226

Richmond City (804) 285-2011

LAUREN BROOKE CHOI RN

Registered Nurse

5801 BREMO RD
RICHMOND, VA 23226

Richmond City (804) 285-2011

KRISTEN KENNEDY YOUNG RN

Registered Nurse

5801 BREMO RD
RICHMOND, VA 23226

Richmond City (804) 281-8208

DR. BETH BARTON HEWITT MD

Pathology (Anatomic Pathology & Clinical Pathology)

5801 BREMO RD
RICHMOND, VA 23226

Richmond City (804) 281-8100

JAMES R SHEFFERLY M.D.

Emergency Medicine

5801 BREMO RD, VIRGINIA EMERGENCY ASSOCIATES INC
RICHMOND, VA 23226

Richmond City (804) 287-7066

JEFFRY A ZIMMERMAN P.A.

Physician Assistant

5801 BREMO RD, ST FRANCIS EMERGENCY DEPARTMENT
RICHMOND, VA 23226

Richmond City (804) 287-7066

LISA BROADDUS ZIEGLER CRNA

Nurse Anesthetist, Certified Registered

5801 BREMO RD
RICHMOND, VA 23226

Richmond City (804) 285-2011

JONATHAN BOWERS SURGICAL ASSISTANT

Specialist/Technologist, Other (Surgical Assistant)

5801 BREMO RD
RICHMOND, VA 23226

Richmond City (804) 281-8503

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 1952446015. It was assigned to this individual provider in the NPPES registry on February 20, 2007.

Where is Mark Williams located?

Mark Williams practices at 5801 Bremo Rd, Richmond, VA 23226. The listed phone number is (804) 281-8100.

What is Mark Williams's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

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.

Is Mark Williams affiliated with any hospitals?

According to CMS data, Mark Williams is affiliated with Bon Secours St Marys Hospital, Bon Secours Southside Medical Center, Bon Secours Memorial Regional Medical Center, Cjw Medical Center and Bon Secours St Francis Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Williams was last updated on August 1, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.