Christina Williams, PA
NPI 1619027885 · Physician Assistant · Burlington, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Williams, PA is a Physician Assistant provider in Burlington, MA (NPI 1619027885).
Provider details
- NPI number
- 1619027885
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 1414 (MA)
Specialties & taxonomies
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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
272 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) |
|---|---|---|
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 58 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 44 | $110 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 37 | $41 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 27 | $143 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 24 | $78 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 42 | 31 |
| Oxycodone Hcl | 34 | 33 |
| Naloxone Hcl | 30 | 30 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 21 | 21 |
| Methocarbamol | 21 | 19 |
| Tizanidine Hcl | 16 | 16 |
| Ciprofloxacin Hcl | 15 | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-11
- Last updated
- 2008-10-31
Frequently asked questions
- What is Christina Williams's NPI number?
- Christina Williams's National Provider Identifier (NPI) is 1619027885, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Williams's specialty?
- Christina Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Christina Williams located?
- Christina Williams's practice location on file with NPPES is 41 Mall Rd, Burlington, MA 01805-0001.
- What is Christina Williams's phone number?
- The practice phone number listed in the NPPES registry for Christina Williams is (781) 744-8000.
- Does Christina Williams accept Medicare?
- Christina Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Williams's NPI active?
- Yes — Christina Williams's NPI (1619027885) is active in the NPPES registry as of the last update on 2008-10-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.