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MS. MARTHA M WILLIAMS DHSC, MS, PA-C
NPI 1649565797
Physician Assistant in Harrisonburg, VA

Active since June 16, 2011PECOS EnrolledAccepts Medicare Assignment
1840 E MARKET ST, HARRISONBURG, VA 22801(540) 432-3080 Get Directions Write a Review

NPPES record last updated: February 19, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 19, 2025, Dec 3, 2021, Feb 3, 2020 and 2 more (5 updates tracked since 2016).

About Ms. Martha M Williams Dhsc, Ms, Pa-c NPPES

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

MS. MARTHA M WILLIAMS DHSC, MS, PA-C (NPI 1649565797) is an individual physician assistant in Harrisonburg, Virginia, licensed in Virginia (0110004315) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS, is affiliated with Grant Memorial Hospital, and maintains a secondary practice location in Rockingham.

NPPES Registry Identity

NPI1649565797
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameMS. MARTHA M WILLIAMSCredential: DHSC, MS, PA-C
Location Address1840 E MARKET STHarrisonburg, VA 22801-5100
Mailing AddressPo Box 1430Harrisonburg, VA 22803-1430 · (540) 689-1110 · Fax (540) 689-1119
Phone(540) 432-3080
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateJune 16, 2011
Last NPPES UpdateFebruary 19, 20255 updates tracked since enumeration
NPPES CertifiedFebruary 19, 2025
✔ NPI 1649565797 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
Licenses✔ Licensed in VA · 0110004315✔ Licensed in WV · 2014
Definition
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
1840 E MARKET ST, Harrisonburg, VA 22801
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Secondary Practice Location 1

Location 12010 Health Campus DrRockingham, VA 22801-8679 · Phone (540) 689-1110 · Fax (540) 689-1119

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

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

Ms. Martha M Williams Dhsc, Ms, Pa-c 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 ID4486824620
PECOS Enrollment IDI20130930000509, I20161129000847
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 9

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
103 services97 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
49 services49 patients
Detection test by immunoassay with direct visual observation for influenza virus 87804
This is a test that identifies the influenza virus in your body. It works by using an immunoassay, a method that detects the presence of the virus through an immune response. The results are directly observable, making it a quick and efficient way to diagnose flu.
40 services20 patients
Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) 87811
This is a test to detect COVID-19, the virus causing severe respiratory illness. It uses a method called immunoassay, which identifies the virus by its unique proteins. The test is directly observed for accuracy. It helps determine if you're currently infected.
32 services32 patients
Automated urinalysis test 81003
An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.
29 services29 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
23 services23 patients

Hospital Affiliations CMS Care Compare

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

Grant Memorial Hospital

Critical Access Hospitals · Petersburg, WV
5/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number511316
Location117 Hospital DrivePetersburg, WV 26847 · Grant County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22801 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
$86.88 typical visit price
range $56.19 – $170.30
Typical copayment $21.72 (range $14.04 – $42.57)
Most-billed visit code 99203
Established Patient
$70.08 typical visit price
range $18.07 – $138.91
Typical copayment $17.52 (range $4.51 – $34.72)
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.

Reported Quality Measures

Closing the Referral Loop: Receipt of Specialist Report
0%319 patients1/55-star benchmark: 87%
Controlling High Blood Pressure
25%40 patients2/55-star benchmark: 91%
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
100%21 patients1/55-star benchmark: 91%
Documentation of Current Medications in the Medical Record
100%2,176 patients5/55-star benchmark: 100%
Falls: Screening for Future Fall Risk
0%225 patients1/55-star benchmark: 100%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
28%1,999 patients2/55-star benchmark: 98%
Use of High-Risk Medications in Older Adults
Lower rates are better for this measure.
Patients appropriateDiagnosis: 0% · 240 patients
Patients totalRate: 0% · 240 patients
0%240 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 4

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

MR. KEITH E YODER PA-C
Physician Assistant
1840 E MARKET ST
HARRISONBURG, VA 22801
Harrisonburg City (540) 432-3080
SHARON MCMILLIN
Nurse Practitioner (Family)
1840 E MARKET ST
HARRISONBURG, VA 22801
Harrisonburg City (540) 432-3080
MRS. MARGARET FILIATRAULT RINACA PA-C
Physician Assistant
1840 E MARKET ST
HARRISONBURG, VA 22801
Harrisonburg City (540) 432-3080
DANIELLE BRAND PA
Physician Assistant
1840 E MARKET ST
HARRISONBURG, VA 22801
Harrisonburg City (540) 432-3080

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 Martha Williams's NPI number?

The NPI number for Martha Williams is 1649565797. It was assigned to this individual provider in the NPPES registry on June 16, 2011.

Where is Martha Williams located?

Martha Williams practices at 1840 E Market St, Harrisonburg, VA 22801. The listed phone number is (540) 432-3080.

What is Martha Williams's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Martha Williams enrolled in Medicare?

Yes. Martha 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.

What insurance does Martha Williams accept?

Health plans from CareSource list Martha Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Martha Williams affiliated with any hospitals?

According to CMS data, Martha Williams is affiliated with Grant Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Martha Williams was last updated on February 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.