Kristen Williams, PA
NPI 1639498223 · Physician Assistant · Ocala, FL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kristen Williams, PA is a Physician Assistant provider in Ocala, FL (NPI 1639498223).
Provider details
- NPI number
- 1639498223
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- PENDING (FL)
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
16 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
179 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 99 | $157 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 80 | $109 |
Typical Medicare-allowed amounts for these services range $109–$157 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 36 | 35 |
| Doxycycline Hyclate | 21 | 21 |
| Prednisone | 21 | 21 |
| Ondansetronbrand: Ondansetron Odt | 20 | 20 |
| Methocarbamol | 19 | 18 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 17 | 17 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 15 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-22
- Last updated
- 2014-09-03
Frequently asked questions
- What is Kristen Williams's NPI number?
- Kristen Williams's National Provider Identifier (NPI) is 1639498223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kristen Williams's specialty?
- Kristen Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kristen Williams located?
- Kristen Williams's practice location on file with NPPES is 1500 Sw 1st Ave, Ocala, FL 34471-6504.
- What is Kristen Williams's phone number?
- The practice phone number listed in the NPPES registry for Kristen Williams is (352) 351-7600.
- Does Kristen Williams accept Medicare?
- Kristen Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kristen Williams's NPI active?
- Yes — Kristen Williams's NPI (1639498223) is active in the NPPES registry as of the last update on 2014-09-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.