Martha Williams, DHSC, MS, PA-C
NPI 1649565797 · Physician Assistant · Harrisonburg, VA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Martha Williams, DHSC, MS, PA-C is a Physician Assistant provider in Harrisonburg, VA (NPI 1649565797).
Provider details
- NPI number
- 1649565797
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DHSC, MS, PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 2014 (WV)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
329 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 103 | $74 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 49 | $92 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 40 | $16 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 32 | $41 |
| Automated Urinalysis Test81003 | 29 | $2 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 27 | 27 |
| Doxycycline Hyclate | 19 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 16 |
| Metformin Hcl | 13 | — |
| Methylprednisolone | 13 | 12 |
| Tamsulosin Hcl | 13 | — |
| Amoxicillin | 12 | 11 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 2010 Health Campus DrRockingham, VA 22801-8679Phone: (540) 689-1110Fax: (540) 689-1119
Registry dates
- Enumerated
- 2011-06-16
- Last updated
- 2025-02-19
- Certified
- 2025-02-19
Frequently asked questions
- What is Martha Williams's NPI number?
- Martha Williams's National Provider Identifier (NPI) is 1649565797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martha Williams's specialty?
- Martha Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Martha Williams located?
- Martha Williams's practice location on file with NPPES is 1840 E Market St, Harrisonburg, VA 22801-5100.
- What is Martha Williams's phone number?
- The practice phone number listed in the NPPES registry for Martha Williams is (540) 432-3080.
- Does Martha Williams accept Medicare?
- Martha Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Martha Williams's NPI active?
- Yes — Martha Williams's NPI (1649565797) is active in the NPPES registry as of the last update on 2025-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.